Software Advice helps businesses choose the right IP PBX software so they can save money with SIP trunking and get the phone system features they need. How does it work?

PBX Phone Systems

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Nextiva Office logo
 
Nextiva's SIP trunks and cloud-services can be added to a company's existing PBX or IP-PBX, providing additional connectivity and new functionality, without needing to replace the investment in on-site equipment.
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Nextiva's SIP trunks and cloud-services can be added to a company's existing PBX or IP-PBX, providing additional connectivity and new functionality, without needing to replace the investment in on-site equipment.
 
Virtual Office by 8x8 logo
 
Virtual Office is a collection of comprehensive web-based business VoIP solutions from offered by 8x8. Enterprise grade phone service, virtual meetings, mobile applications, virtual contact centers and more are available to help companies... Read More
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Virtual Office is a collection of comprehensive web-based business VoIP solutions from offered by 8x8. Enterprise grade phone service, virtual meetings, mobile applications, virtual contact centers and more are available to help companies... Read More
 
Vonage Business Solutions logo
 
Vonage Business Solutions is a cloud-based unified communication solution suitable for small and midsize companies. The solution offers a business phone system that enables businesses to connect their VoIP phone system to any internet... Read More
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Vonage Business Solutions is a cloud-based unified communication solution suitable for small and midsize companies. The solution offers a business phone system that enables businesses to connect their VoIP phone system to any internet... Read More
 
FluentStream VoIP logo
 
FluentStream is a business phone solution designed for companies of all sizes. It offers call monitoring, telemarketing, IVR and reporting within a suite. The software is available both in cloud-based and on-premise deployment options. The... Read More
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FluentStream is a business phone solution designed for companies of all sizes. It offers call monitoring, telemarketing, IVR and reporting within a suite. The software is available both in cloud-based and on-premise deployment options. The... Read More
 
Jive PBX logo
 
Jive is a great fit for companies needing all the features of a full-fledged PBX system, but doesn't have the upfront costs of a large equipment purchase. Their scalable cloud-hosted PBX stays secure and updated automatically.
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Jive is a great fit for companies needing all the features of a full-fledged PBX system, but doesn't have the upfront costs of a large equipment purchase. Their scalable cloud-hosted PBX stays secure and updated automatically.

Call us for a free FastStart Consultation: (844) 852-3639


 
ShoreTel Sky logo
 
ShoreTel is a cloud-based VoIP phone system that offers collaboration and conferencing tools to enable efficient information flow within the organization. ShoreTel is a managed hosted VoIP solution that configures and manages everything... Read More
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ShoreTel is a cloud-based VoIP phone system that offers collaboration and conferencing tools to enable efficient information flow within the organization. ShoreTel is a managed hosted VoIP solution that configures and manages everything... Read More
 
MegaPath logo
 
MegaPath is Business Voip software that works with medium to large-size businesses in any industry. The system offers companies Internet connectivity, unified communications, security services, managed networking services, and more. With... Read More
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MegaPath is Business Voip software that works with medium to large-size businesses in any industry. The system offers companies Internet connectivity, unified communications, security services, managed networking services, and more. With... Read More
 
AVOXI Core Cloud PBX logo
 
Since 2001, AVOXI has been developing call center and VoIP systems that serve the needs of businesses around the globe. With customers in 50 countries, AVOXI combines a telecom service with PBX and call center software in a hosted... Read More
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Since 2001, AVOXI has been developing call center and VoIP systems that serve the needs of businesses around the globe. With customers in 50 countries, AVOXI combines a telecom service with PBX and call center software in a hosted... Read More
 
RingCentral Office logo
 
RingCentral Office takes all the functionality of an enterprise-class PBX phone system and virtualizes it in the cloud. Their all-inclusive system arrives pre-configured to the customer's exact needs, ready to plug in and go.
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RingCentral Office takes all the functionality of an enterprise-class PBX phone system and virtualizes it in the cloud. Their all-inclusive system arrives pre-configured to the customer's exact needs, ready to plug in and go.
 
Business Voice logo
 
Business Voice is a cloud-based VoiP solution created by PanTerra. Users can take or make calls from their office phone number, communicate with their team, and have file access, all from any device with an internet connection, giving... Read More
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Business Voice is a cloud-based VoiP solution created by PanTerra. Users can take or make calls from their office phone number, communicate with their team, and have file access, all from any device with an internet connection, giving... Read More

Call us for a free FastStart Consultation: (844) 852-3639


 
inContact Hosted Call Center logo
 
Used by contact centers around the world, inContact’s SaaS-based call center software maximizes the quality and minimizes the cost of each and every client interaction. This call center solution has all of the features your customer-focused... Read More
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Used by contact centers around the world, inContact’s SaaS-based call center software maximizes the quality and minimizes the cost of each and every client interaction. This call center solution has all of the features your customer-focused... Read More
 
ContactWorld by NewVoiceMedia logo
 
ContactWorld, created by NewVoiceMedia, is a unified communication platform for any size corporation. It offers standalone call center functionality, including automatic call distribution, predictive dialer, call recording, auto attendant,... Read More
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ContactWorld, created by NewVoiceMedia, is a unified communication platform for any size corporation. It offers standalone call center functionality, including automatic call distribution, predictive dialer, call recording, auto attendant,... Read More
 
Five9 Cloud Contact Center logo
 
Five9's Cloud Contact Center brings custom call center PBX infrastructure without most of the expensive equipment. IVR, Predictive Dialing and full CTI make Virtual Contact Center a great fit for call centers of any size.
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Five9's Cloud Contact Center brings custom call center PBX infrastructure without most of the expensive equipment. IVR, Predictive Dialing and full CTI make Virtual Contact Center a great fit for call centers of any size.
 
Solgari Cloud PBX logo
 
Solgari Cloud PBX is an all-in-one, fully integrated PBX solution that can be customized to meet the needs of businesses of various sizes. Features and functionality as well as users and locations can be added or removed on an as-needed... Read More
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Solgari Cloud PBX is an all-in-one, fully integrated PBX solution that can be customized to meet the needs of businesses of various sizes. Features and functionality as well as users and locations can be added or removed on an as-needed... Read More
 
SafeSoft Cloud Contact Center logo
 
MarketDialer's software-based PBX has a feature set tailored to call centers and other industries requiring an intelligent, advanced predictive dialing platform. It frees agents from dialing and waiting to focus on the customers.
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MarketDialer's software-based PBX has a feature set tailored to call centers and other industries requiring an intelligent, advanced predictive dialing platform. It frees agents from dialing and waiting to focus on the customers.

Call us for a free FastStart Consultation: (844) 852-3639


 
Fonality logo
 
Built on the idea that big company phone features should also be available to small- and medium- sized businesses, Fonality offers robust functionality that fits the the SMB budget. Their suite of applications is both flexible and... Read More
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Built on the idea that big company phone features should also be available to small- and medium- sized businesses, Fonality offers robust functionality that fits the the SMB budget. Their suite of applications is both flexible and... Read More
 
Answer360 logo
 
Answer360 is a powerful business VoIP phone system ideal for small and mid-sized businesses. Features include call transferring, call forwarding, auto attendants, and message delivery via email.
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Answer360 is a powerful business VoIP phone system ideal for small and mid-sized businesses. Features include call transferring, call forwarding, auto attendants, and message delivery via email.
 
Slingshot logo
 
Slingshot is a robust VoIP solution that offers numerous advanced features. Far more than a straightforward hosted PBX, it offers a predictive dialer and allows you to bring your own device instead of using specialized equipment.
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Slingshot is a robust VoIP solution that offers numerous advanced features. Far more than a straightforward hosted PBX, it offers a predictive dialer and allows you to bring your own device instead of using specialized equipment.
 
Cisco Unified Communications Manager logo
 
Cisco Unified Communications Manager is an advanced platform for integrating business communication technologies such as telephony, video conferencing, presence information, call recording, Web conferencing and messaging. It enables... Read More
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Cisco Unified Communications Manager is an advanced platform for integrating business communication technologies such as telephony, video conferencing, presence information, call recording, Web conferencing and messaging. It enables... Read More
 
UNIVERGE 3C logo
 
UNIVERGE 3C, NEC’s software-based IP-PBX, is a sophisticated platform for unified communications and collaboration. Its comprehensive functionality helped it earn the 2014 Internet Telephony Product of the Year award from technology... Read More
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UNIVERGE 3C, NEC’s software-based IP-PBX, is a sophisticated platform for unified communications and collaboration. Its comprehensive functionality helped it earn the 2014 Internet Telephony Product of the Year award from technology... Read More

Call us for a free FastStart Consultation: (844) 852-3639


 
Avaya IP Office logo
 
Avaya IP Office is a comprehensive communications and collaboration solution designed for small to midsize businesses. It’s capable of scaling up to support 2,000 users, so your phone system can easily expand as your business grows.  Moreover,... Read More
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Avaya IP Office is a comprehensive communications and collaboration solution designed for small to midsize businesses. It’s capable of scaling up to support 2,000 users, so your phone system can easily expand as your business grows.  Moreover,... Read More
 
OmniPCX Office RCE logo
 
OmniPCX Office Rich Communication Edition (RCE) is the cornerstone of Alcatel-Lucent’s OpenTouch Suite. It's suited for small to midsize businesses with up to 200 employees. An all-in-one networking solution, OmniPCX Office RCE... Read More
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OmniPCX Office Rich Communication Edition (RCE) is the cornerstone of Alcatel-Lucent’s OpenTouch Suite. It's suited for small to midsize businesses with up to 200 employees. An all-in-one networking solution, OmniPCX Office RCE... Read More
 
SendHub logo
 
SendHub is a comprehensive Business VoIP solution. The mobile capabilities and messaging system are two features we really like, and it's suitable for companies of almost any size. The system deploys on premise or web-based.
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SendHub is a comprehensive Business VoIP solution. The mobile capabilities and messaging system are two features we really like, and it's suitable for companies of almost any size. The system deploys on premise or web-based.
 
Huawei eSpace logo
 
Huawei eSpace is a unified communications solution designed for enterprises. Some models of the hardware IP PBXs at the core of the Huawei system can support up to 10,000 users per unit. Huawei Integrated Access Devices (IADs) enable... Read More
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Huawei eSpace is a unified communications solution designed for enterprises. Some models of the hardware IP PBXs at the core of the Huawei system can support up to 10,000 users per unit. Huawei Integrated Access Devices (IADs) enable... Read More
 
Ooma Office logo
 
Ooma Office is a VoIP solution designed and priced for organizations with one to 10 employees. While Ooma Office offers many of the same capabilities as more traditional IP PBXs, it also has  features that are specifically tailored... Read More
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Ooma Office is a VoIP solution designed and priced for organizations with one to 10 employees. While Ooma Office offers many of the same capabilities as more traditional IP PBXs, it also has  features that are specifically tailored... Read More

Call us for a free FastStart Consultation: (844) 852-3639


 
Intermedia Hosted PBX logo
 
Intermedia Hosted PBX is a cloud-based phone system designed to meet the needs of small to mid-sized enterprises with up to 1,000 employees. Users of Intermedia Hosted PBX get a range of features, such as hunt groups to make sure... Read More
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Intermedia Hosted PBX is a cloud-based phone system designed to meet the needs of small to mid-sized enterprises with up to 1,000 employees. Users of Intermedia Hosted PBX get a range of features, such as hunt groups to make sure... Read More
 
XO Hosted PBX logo
 
XO Communications is a provider of network services that offers a cloud-based phone system, XO Hosted PBX, designed for businesses with 50 to 1,000 employees. In addition to hosting VoIP applications, XO also offers SIP trunking services... Read More
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XO Communications is a provider of network services that offers a cloud-based phone system, XO Hosted PBX, designed for businesses with 50 to 1,000 employees. In addition to hosting VoIP applications, XO also offers SIP trunking services... Read More
 
Voice Complete logo
 
Level 3 offers both SIP trunking and Integrated Services for Digital Network (ISDN) services in a package known as Voice Complete. Businesses can use Level 3 SIP trunking to connect calls between VoIP systems and the traditional phone... Read More
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Level 3 offers both SIP trunking and Integrated Services for Digital Network (ISDN) services in a package known as Voice Complete. Businesses can use Level 3 SIP trunking to connect calls between VoIP systems and the traditional phone... Read More
 
NetVanta 7100 logo
 
ADTRAN’s NetVanta 7100 isn’t just an IP PBX, but a complete office-in-a-box solution that handles both data and voice networking. Designed for small to very small businesses, NetVanta 7100 is priced according to two licensing models:... Read More
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ADTRAN’s NetVanta 7100 isn’t just an IP PBX, but a complete office-in-a-box solution that handles both data and voice networking. Designed for small to very small businesses, NetVanta 7100 is priced according to two licensing models:... Read More
 
OBiPLUS logo
 
Obihai’s OBiPLUS is an on-premise IP telephony solution designed for very small businesses (i.e., those with 12 or fewer employees). Users can buy either a basic license, which supports up to four extensions, or a premium license,... Read More
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Obihai’s OBiPLUS is an on-premise IP telephony solution designed for very small businesses (i.e., those with 12 or fewer employees). Users can buy either a basic license, which supports up to four extensions, or a premium license,... Read More

Call us for a free FastStart Consultation: (844) 852-3639


 
MiVoice logo
 
Mitel MiVoice is a range of unified communications (UC) platforms designed for businesses with varying needs. Some MiVoice platforms are designed for small businesses with fewer than 250 employees, while others can scale up to 150,000... Read More
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Mitel MiVoice is a range of unified communications (UC) platforms designed for businesses with varying needs. Some MiVoice platforms are designed for small businesses with fewer than 250 employees, while others can scale up to 150,000... Read More
 
XMission Hosted PBX logo
 
XMission is an Internet service provider (ISP) that offers a cloud-based business phone system known as XMission Hosted PBX. Additionally, XMission offers SIP trunking services for businesses that want a single-vendor VoIP system.... Read More
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XMission is an Internet service provider (ISP) that offers a cloud-based business phone system known as XMission Hosted PBX. Additionally, XMission offers SIP trunking services for businesses that want a single-vendor VoIP system.... Read More
 
Broadview OfficeSuite logo
 
Broadview Networks’ OfficeSuite is a cloud-based phone system that offers a number of unified communications features. This solution is scalable, and can meet the needs of very small businesses (three or fewer employees) as well... Read More
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Broadview Networks’ OfficeSuite is a cloud-based phone system that offers a number of unified communications features. This solution is scalable, and can meet the needs of very small businesses (three or fewer employees) as well... Read More
 
3CX logo
 

3CX

3CX is a software-based PBX that works with SIP standard-based IP Phones, SIP trunks and VoIP Gateways. Pricing for 3CX is based on the number of simultaneous calls that the system supports. Solutions are tailored to different business... Read More
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3CX is a software-based PBX that works with SIP standard-based IP Phones, SIP trunks and VoIP Gateways. Pricing for 3CX is based on the number of simultaneous calls that the system supports. Solutions are tailored to different business... Read More
 
ShoreTel logo
 
In addition to providing a hosted PBX service (an offering that can be found here), ShoreTel also provides an on-premise solution that offers the conferencing, collaboration, presence and mobility applications and features collectively... Read More
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In addition to providing a hosted PBX service (an offering that can be found here), ShoreTel also provides an on-premise solution that offers the conferencing, collaboration, presence and mobility applications and features collectively... Read More

Call us for a free FastStart Consultation: (844) 852-3639


 
Phone.com logo
 
Phone.com is a hosted PBX solution designed for businesses with fewer than 50 employees. It offers SIP trunking service together with PBX service for a single-provider VoIP solution. Along with basic PBX functions like extensions,... Read More
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Phone.com is a hosted PBX solution designed for businesses with fewer than 50 employees. It offers SIP trunking service together with PBX service for a single-provider VoIP solution. Along with basic PBX functions like extensions,... Read More
 
TelePacific Hosted PBX logo
 
TelePacific Communications is a provider of voice and data services that offers a cloud-based phone system known as TelePacific Hosted PBX. TelePacific also offers SIP trunking, PRI/CAS and analog services for businesses with on-premise... Read More
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TelePacific Communications is a provider of voice and data services that offers a cloud-based phone system known as TelePacific Hosted PBX. TelePacific also offers SIP trunking, PRI/CAS and analog services for businesses with on-premise... Read More
 
PBXact logo
 
Schmooze Com, Inc. is the developer and corporate sponsor of FreePBX, which is a distribution of the open-source Asterisk telephony platform. True to its name, FreePBX is indeed free for businesses possessing the IT experience to deploy... Read More
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Schmooze Com, Inc. is the developer and corporate sponsor of FreePBX, which is a distribution of the open-source Asterisk telephony platform. True to its name, FreePBX is indeed free for businesses possessing the IT experience to deploy... Read More
 
Digium Switchvox logo
 
Digium, the developer of Asterisk (a widely used open-source telephony platform), offers a phone system known as Switchvox, which is available both as a Web-based and on-premise solution. Businesses with multiple locations can also... Read More
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Digium, the developer of Asterisk (a widely used open-source telephony platform), offers a phone system known as Switchvox, which is available both as a Web-based and on-premise solution. Businesses with multiple locations can also... Read More
 
Windstream Virtual PBX VoIP logo
 
Windstream is a provider of network services for business communications, including a suite of cloud-based applications for voice communications known as Windstream Virtual PBX VoIP. Windstream offers SIP trunking for businesses that... Read More
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Windstream is a provider of network services for business communications, including a suite of cloud-based applications for voice communications known as Windstream Virtual PBX VoIP. Windstream offers SIP trunking for businesses that... Read More

Call us for a free FastStart Consultation: (844) 852-3639


 
BroadVoice Cloud PBX logo
 
Broadvoice Cloud PBX is a fully scalable, hosted phone system that can meet the needs of businesses ranging in size from one to over 10,000 employees. Services are priced per extension per month. Broadvoice offers U.S.-based support... Read More
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Broadvoice Cloud PBX is a fully scalable, hosted phone system that can meet the needs of businesses ranging in size from one to over 10,000 employees. Services are priced per extension per month. Broadvoice offers U.S.-based support... Read More
 
Evolved Office IP Phone System logo
 
Evolve IP offers a cloud-based phone system known as The Evolved Office Hosted PBX, which is suitable for businesses with over 50 employees. Businesses can bundle Evolve IP SIP trunking with Evolved Office for a single-vendor solution. Moreover,... Read More
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Evolve IP offers a cloud-based phone system known as The Evolved Office Hosted PBX, which is suitable for businesses with over 50 employees. Businesses can bundle Evolve IP SIP trunking with Evolved Office for a single-vendor solution. Moreover,... Read More
 
OnSIP Hosted VoIP logo
 
OnSIP Hosted PBX by Junction Networks is a cloud-based phone system that includes standard PBX features, such as auto attendants and voicemail-to-email. Unified communications (UC) applications are also available, such as a browser-based... Read More
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OnSIP Hosted PBX by Junction Networks is a cloud-based phone system that includes standard PBX features, such as auto attendants and voicemail-to-email. Unified communications (UC) applications are also available, such as a browser-based... Read More
 
AirePBX logo
 
AireSpring AirePBX is a Web-based phone system for businesses with up to 1,000 employees. In addition to hosted PBX service, AireSpring offers SIP trunking for a single-provider VoIP solution. In addition to managed routers, AireSpring... Read More
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AireSpring AirePBX is a Web-based phone system for businesses with up to 1,000 employees. In addition to hosted PBX service, AireSpring offers SIP trunking for a single-provider VoIP solution. In addition to managed routers, AireSpring... Read More
 
VirtualPBX logo
 
VirtualPBX is a scalable, hosted PBX suitable for small to midsize businesses with up to 100 employees. Instead of outsourcing support to overseas call centers, VirtualPBX offers free, U.S.-based support. Installation includes pre-configured... Read More
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VirtualPBX is a scalable, hosted PBX suitable for small to midsize businesses with up to 100 employees. Instead of outsourcing support to overseas call centers, VirtualPBX offers free, U.S.-based support. Installation includes pre-configured... Read More

Call us for a free FastStart Consultation: (844) 852-3639


 
FortiVoice logo
 
Fortinet offers a line of on-premise VoIP systems known as FortiVoice that scale from small businesses up to enterprises with 2,000 employees. In addition to IP connectivity, FortiVoice also supports connections to the public switched... Read More
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Fortinet offers a line of on-premise VoIP systems known as FortiVoice that scale from small businesses up to enterprises with 2,000 employees. In addition to IP connectivity, FortiVoice also supports connections to the public switched... Read More
 
ThinkingPhones logo
 
ThinkingPhones is a cloud-based phone system developed by Thinking Phone Networks suited for organizations with over 5,000 employees. This solution also offers SIP trunking for businesses that need a single-vendor VoIP solution.  ThinkingPhones... Read More
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ThinkingPhones is a cloud-based phone system developed by Thinking Phone Networks suited for organizations with over 5,000 employees. This solution also offers SIP trunking for businesses that need a single-vendor VoIP solution.  ThinkingPhones... Read More
 
VoiceMaxx CE logo
 
West IP Communications is a provider of cloud-based unified communications services. VoiceMaxx CE (Cisco Edition), West IP Communications’ hosted PBX offering, is based on the Cisco Hosted Collaboration Solution platform. While... Read More
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West IP Communications is a provider of cloud-based unified communications services. VoiceMaxx CE (Cisco Edition), West IP Communications’ hosted PBX offering, is based on the Cisco Hosted Collaboration Solution platform. While... Read More
 
Mobex Hosted PBX logo
 
Mobex provides bundled PBX and SIP trunking services to small businesses with fewer than 100 employees. Businesses can bundle these services for a single-provider phone system. Services are priced on a per user or per line (i.e., call... Read More
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Mobex provides bundled PBX and SIP trunking services to small businesses with fewer than 100 employees. Businesses can bundle these services for a single-provider phone system. Services are priced on a per user or per line (i.e., call... Read More
 
CloudCall Enterprise logo
 
SYNETY is a developer of cloud-based phone systems, one of which is the CloudCall platform. CloudCall Enterprise is a hosted PBX and SIP trunking solution; users only need a connection to the public Internet to make and receive calls.... Read More
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SYNETY is a developer of cloud-based phone systems, one of which is the CloudCall platform. CloudCall Enterprise is a hosted PBX and SIP trunking solution; users only need a connection to the public Internet to make and receive calls.... Read More

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AskoziaPBX logo
 
AskoziaPBX is an on-premise IP-based phone system. It can be deployed either on vendor Askozia’s proprietary telephony servers or on virtual machines. Because the software for AskoziaPBX is sold as a firmware image with a Linux operating... Read More
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AskoziaPBX is an on-premise IP-based phone system. It can be deployed either on vendor Askozia’s proprietary telephony servers or on virtual machines. Because the software for AskoziaPBX is sold as a firmware image with a Linux operating... Read More
 
SwyxWare logo
 
Swyx offers a VoIP solution known as SwyxWare, which is specifically designed for small to midsized enterprises. SwyxWare is a software-based IP PBX system that supports up to 1,000 employees. While SwyxWare is available as a cloud-based... Read More
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Swyx offers a VoIP solution known as SwyxWare, which is specifically designed for small to midsized enterprises. SwyxWare is a software-based IP PBX system that supports up to 1,000 employees. While SwyxWare is available as a cloud-based... Read More
 
Masergy UCaaS logo
 
Masergy is a provider of cloud-based unified communications as a service (UCaaS). Though Masergy UCaaS is a cloud-based system, it can be integrated with existing on-premise IP PBX equipment for businesses that want hybrid deployments. Masergy... Read More
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Masergy is a provider of cloud-based unified communications as a service (UCaaS). Though Masergy UCaaS is a cloud-based system, it can be integrated with existing on-premise IP PBX equipment for businesses that want hybrid deployments. Masergy... Read More
 
Zultys MX System logo
 
Zultys offers a line of unified communications (UC) solutions and phone system equipment known as the Zultys MX Series. Unlike IP-based phone systems that depend on third-party IP phones, Zultys also offers a proprietary line of IP... Read More
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Zultys offers a line of unified communications (UC) solutions and phone system equipment known as the Zultys MX Series. Unlike IP-based phone systems that depend on third-party IP phones, Zultys also offers a proprietary line of IP... Read More
 
Crexendo Cloud Business Phone System logo
 
Crexendo Cloud Business Phone System bundles hosted PBX applications with SIP trunking service for a single-vendor VoIP solution. Crexendo provides Internet connections over cable, T1, fiber optic, MPLS, metro Ethernet and DSL for... Read More
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Crexendo Cloud Business Phone System bundles hosted PBX applications with SIP trunking service for a single-vendor VoIP solution. Crexendo provides Internet connections over cable, T1, fiber optic, MPLS, metro Ethernet and DSL for... Read More

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Business VoiceEdge logo
 
In addition to business-class broadband Internet service, Comcast now offers a cloud-based phone system known as Business VoiceEdge. Designed for businesses ranging in size from five to 500 employees, Business VoiceEdge bundles SIP... Read More
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In addition to business-class broadband Internet service, Comcast now offers a cloud-based phone system known as Business VoiceEdge. Designed for businesses ranging in size from five to 500 employees, Business VoiceEdge bundles SIP... Read More
 
Axon Virtual PBX logo
 
NCH Software offers a software-based business phone system called Axon Virtual PBX. While Axon is an IP PBX, businesses don’t need specialized telephony server hardware to run the system. Instead, it can be installed on standard... Read More
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NCH Software offers a software-based business phone system called Axon Virtual PBX. While Axon is an IP PBX, businesses don’t need specialized telephony server hardware to run the system. Instead, it can be installed on standard... Read More
 
iCall logo
 
iCall is a mobile VoIP solution designed for self-employed entrepreneurs and small startups. Whereas many VoIP systems require investments in hardware, such as servers and IP phones, iCall is a cloud-based solution that can run on... Read More
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iCall is a mobile VoIP solution designed for self-employed entrepreneurs and small startups. Whereas many VoIP systems require investments in hardware, such as servers and IP phones, iCall is a cloud-based solution that can run on... Read More
 
VOIPo Hosted PBX logo
 
VOIPo Hosted PBX Service is an IP phone system characterized by simple licensing. VOIPo’s service isn’t priced according to a per-extension or per-user model, but rather a “pay as you go” model. Users do not have to sign a... Read More
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VOIPo Hosted PBX Service is an IP phone system characterized by simple licensing. VOIPo’s service isn’t priced according to a per-extension or per-user model, but rather a “pay as you go” model. Users do not have to sign a... Read More
 
Line2 Pro logo
 
Toktumi, Inc. is a provider of mobile VoIP solutions for entrepreneurs and startups, including Line2 Pro, a cloud-based phone system. Line2 Pro bundles hosted PBX applications with a SIP trunking service for businesses that need to... Read More
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Toktumi, Inc. is a provider of mobile VoIP solutions for entrepreneurs and startups, including Line2 Pro, a cloud-based phone system. Line2 Pro bundles hosted PBX applications with a SIP trunking service for businesses that need to... Read More

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VOXOX Hosted PBX logo
 
Voxox is a provider of cloud-based communications solutions including Voxox Hosted PBX, a scalable hosted phone system. Voxox also bundles its SIP trunking service with a suite of hosted PBX applications for a single-vendor VoIP solution. Businesses... Read More
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Voxox is a provider of cloud-based communications solutions including Voxox Hosted PBX, a scalable hosted phone system. Voxox also bundles its SIP trunking service with a suite of hosted PBX applications for a single-vendor VoIP solution. Businesses... Read More
 
Phonebooth OnDemand logo
 
Bandwidth.com is a provider of Internet and telephone services that offers a cloud-based phone system known as Phonebooth OnDemand. This VoIP solution combines hosted PBX applications, such as auto attendants, with SIP trunking, a... Read More
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Bandwidth.com is a provider of Internet and telephone services that offers a cloud-based phone system known as Phonebooth OnDemand. This VoIP solution combines hosted PBX applications, such as auto attendants, with SIP trunking, a... Read More
 
Alteva Hosted VoIP logo
 
Alteva is a provider of telecommunications services that offers a cloud-based business phone system called Alteva Hosted VoIP. Alteva also offers SIP trunking (a service that connects calls between VoIP systems and the traditional... Read More
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Alteva is a provider of telecommunications services that offers a cloud-based business phone system called Alteva Hosted VoIP. Alteva also offers SIP trunking (a service that connects calls between VoIP systems and the traditional... Read More
 
PIMS Dialer logo
 
The PIMS Dialer is flexible, scalable and secure. It’s a cloud-based application, and the servers are housed in a state of the art facility that’s operated around the clock, delivering extremely reliable uptime. Companies can... Read More
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The PIMS Dialer is flexible, scalable and secure. It’s a cloud-based application, and the servers are housed in a state of the art facility that’s operated around the clock, delivering extremely reliable uptime. Companies can... Read More
 
Telzio logo
 
Telzio is a cloud communications provider that offers a flexible small business phone system for businesses with one to 1,000 employees. Telzio’s solution includes SIP trunking—a network service that allows VoIP users to connect... Read More
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Telzio is a cloud communications provider that offers a flexible small business phone system for businesses with one to 1,000 employees. Telzio’s solution includes SIP trunking—a network service that allows VoIP users to connect... Read More

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itPBX logo
 
itPBX delivers a suite of business communication services to small and mid-sized organizations. The system is cloud-based eliminating the need to install additional hardware. Beyond PBX, call recording, computer telephony integration,... Read More
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itPBX delivers a suite of business communication services to small and mid-sized organizations. The system is cloud-based eliminating the need to install additional hardware. Beyond PBX, call recording, computer telephony integration,... Read More
 
ezTalks logo
 
EZTalks is a provider of video and Web conferencing solutions. The core functionality of the product includes HD video conferencing and screen sharing. EZTalks also offers toll-free audio conferencing, instant messaging, document sharing,... Read More
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EZTalks is a provider of video and Web conferencing solutions. The core functionality of the product includes HD video conferencing and screen sharing. EZTalks also offers toll-free audio conferencing, instant messaging, document sharing,... Read More
 
Aircall logo
 
Aircall is a cloud-based phone system designed for teams like customer support or sales teams. Aircall is a software that allows companies to get phone numbers in 30 countries, configure them in seconds and forward calls easily across... Read More
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Aircall is a cloud-based phone system designed for teams like customer support or sales teams. Aircall is a software that allows companies to get phone numbers in 30 countries, configure them in seconds and forward calls easily across... Read More
 
Ringio logo
 
Rigio is a web-based call center software that features a CRM dialer, call routing, analytics, and more. It’s used by sales teams in many industries such as healthcare, media, non-profit, and banking. The system can integrate with... Read More
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Rigio is a web-based call center software that features a CRM dialer, call routing, analytics, and more. It’s used by sales teams in many industries such as healthcare, media, non-profit, and banking. The system can integrate with... Read More
 
Sharpen logo
 
Sharpen’s cloud-based platform is a SaaS contact center solution for midsize to large enterprise businesses. As an all-in-one solution, the platform provides businesses the ability to communicate with customers by SMS, MMS, live... Read More
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Sharpen’s cloud-based platform is a SaaS contact center solution for midsize to large enterprise businesses. As an all-in-one solution, the platform provides businesses the ability to communicate with customers by SMS, MMS, live... Read More

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CorvisaOne logo
 
CorvisaOne is a cloud communications suite suited for companies that need features for managing inbound or outbound call centers or every day business phone needs. CorvisaOne offers features such as ACD, queue and skills-based routing,... Read More
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CorvisaOne is a cloud communications suite suited for companies that need features for managing inbound or outbound call centers or every day business phone needs. CorvisaOne offers features such as ACD, queue and skills-based routing,... Read More
 
UniVoIP logo
 
OfficeConnect by UniVoip is a cloud based phone system that delivers many features including auto-attendant, call paging, conferencing, email integration, one-touch speed dial, and call recording. The platform is targeted towards medium... Read More
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OfficeConnect by UniVoip is a cloud based phone system that delivers many features including auto-attendant, call paging, conferencing, email integration, one-touch speed dial, and call recording. The platform is targeted towards medium... Read More
 
Skype for Business logo
 
Skype for Business is a voice messaging tool that enables teams and individuals across the world to communicate and collaborate. It offers both Web-based and on-premise solutions and is best suited for organizations that operate across... Read More
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Skype for Business is a voice messaging tool that enables teams and individuals across the world to communicate and collaborate. It offers both Web-based and on-premise solutions and is best suited for organizations that operate across... Read More
 
AT&T UC Voice logo
 
AT&T UC Voice is a Web-based business Voice over Internet Protocol (VoIP) software solution that enables employees to communicate and collaborate via Internet Protocol (IP) phone, video phone and softphone. The system integrates with... Read More
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AT&T UC Voice is a Web-based business Voice over Internet Protocol (VoIP) software solution that enables employees to communicate and collaborate via Internet Protocol (IP) phone, video phone and softphone. The system integrates with... Read More
 
Verizon UCCaaS logo
 
Verizon UCCaaS is a unified communication and collaboration service that enables employees in an organization to interact and work together in a collaborative virtual environment. It offers cloud-based services as well as hybrid solutions... Read More
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Verizon UCCaaS is a unified communication and collaboration service that enables employees in an organization to interact and work together in a collaborative virtual environment. It offers cloud-based services as well as hybrid solutions... Read More

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Versature logo
 
Versature is a cloud-based business voice over IP (VoIP) software solution. Its key feature is a hosted private branch exchange (PBX) system. Versature offers specialized solutions for different industries such as financial services,... Read More
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Versature is a cloud-based business voice over IP (VoIP) software solution. Its key feature is a hosted private branch exchange (PBX) system. Versature offers specialized solutions for different industries such as financial services,... Read More
 
Truly Wireless logo
 
Truly Wireless is a business voice over IP (VoIP) software solution available as a mobile application. Key features include an auto- or predictive dialer, call recording, computer telephony integration (CTI), conference calling, an... Read More
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Truly Wireless is a business voice over IP (VoIP) software solution available as a mobile application. Key features include an auto- or predictive dialer, call recording, computer telephony integration (CTI), conference calling, an... Read More
 
Cisco Business Edition 6000 logo
 
Cisco Business Edition 6000 enables teams to collaborate together through a single, integrated platform. The solution offers basic communications capabilities such as conferencing, paging, messaging, video and voice chat and routing,... Read More
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Cisco Business Edition 6000 enables teams to collaborate together through a single, integrated platform. The solution offers basic communications capabilities such as conferencing, paging, messaging, video and voice chat and routing,... Read More
 
MyOwnConference logo
 
MyOwnConference is a cloud-based web conferencing platform. It is used by small and midsize businesses in a variety of industries for web conferencing and broadcasting live webinars and online training sessions to a remote audience. MyOwnConference... Read More
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MyOwnConference is a cloud-based web conferencing platform. It is used by small and midsize businesses in a variety of industries for web conferencing and broadcasting live webinars and online training sessions to a remote audience. MyOwnConference... Read More
 
MightyCall logo
 
MightyCall is a cloud-based business VoIP solution suitable for small businesses. Users can manage customer service calls and communications from multiple channels in one platform. MightyCall can manage incoming calls including toll-free,... Read More
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MightyCall is a cloud-based business VoIP solution suitable for small businesses. Users can manage customer service calls and communications from multiple channels in one platform. MightyCall can manage incoming calls including toll-free,... Read More

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DLS Hosted PBX logo
 
DLS Hosted PBX is a voice over IP solution for small and midsize businesses in industries such as health care, media and entertainment, manufacturing, retail and transportation. Cloud-based and on-premise deployments are available.... Read More
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DLS Hosted PBX is a voice over IP solution for small and midsize businesses in industries such as health care, media and entertainment, manufacturing, retail and transportation. Cloud-based and on-premise deployments are available.... Read More

 

Buyer's Guide

by Daniel Harris,
Market Research Associate
Last Updated: April 11, 2017


The term “PBX,” for private branch exchange, is in most cases simply a synonym for business phone system.

Internet Protocol PBXes, or IP PBXes, are phone systems that connect calls via the internet rather than the traditional phone network.

We’ll explain the core features and benefits of IP PBX systems. We’ll also take a look at some of the key factors that businesses need to consider when investing in a new phone system.

Here's what we'll cover:

  • What Is a PBX and an IP PBX?
  • IP PBX
  • Which Businesses Need Them?
  • Key Considerations

What Is a PBX and an IP PBX?

The term PBX itself is a relic from the early-20th Century, as we explain in our extended definition.

 

Switchboard Operators, public domain image

Broadly speaking, a PBX’s function is to unite all the separate phone extensions that a business uses so they can function together as one system. Specifically, PBXs:

  1. Route incoming calls to whichever extension a caller chooses.
  2. Distribute calls automatically to internal extensions based on pre-set rules.
  3. Connect internal extensions to outside lines when employees place a call.
  4. Connect calls internally between the business’s extensions.

PBXs have been performing these same tasks for decades. As the internet increasingly takes over the function of the traditional phone network, however, the capabilities and features of PBXs have also evolved.

IP PBX

VoIP, or the Voice over Internet Protocol, has brought many changes to all aspects of business telephony—PBXs included. With VoIP, it’s now possible to send calls over an internet connection, as opposed to paying for traditional business phone service.

In order to reap the benefits of VoIP, you need an IP PBX rather than a traditional PBX, as an IP PBX system can connect directly to the internet. Older PBX systems, on the other hand, connect to analog or digital phone lines.

There are devices known as gateways that allow you to use VoIP service with an older PBX system. If you’re replacing your system, however, it makes much more sense to simply invest in an IP PBX.

IP PBXs exist in several very different forms. Although they all perform similar functions, there is no strict definition of the term. An IP PBX can refer to:

Hardware-based on-premise systems Specific on-site hardware devices that look much like typical rack-mounted servers.
Software-based on-premise systems PBX software running on a computer outfitted with phone connections.
Virtualized on-premise systems “Virtual machines” installed on commodity hardware running a virtualization platform such as VMware.
Cloud-based systems Systems hosted by a VoIP provider in the provider’s data center rather than a server on your business’s premises, delivered as a service over your Internet connection.

Which Businesses Need Them?

Traditionally, PBXs were very expensive to purchase and maintain, and they were only used by relatively large businesses. Smaller businesses had alternatives such as Key Systems, which are scaled-down and less automated, but perform similar functions. (With Key Systems, users manually select lines: for example, by pressing "9" for an outside line.)

Now it’s common for businesses with even a few employees to use some sort of IP PBX for their office phone system.

IP PBXs allow incoming calls to be routed and automatically distributed, and allow internal extensions to dial each other and share external lines. They provide the same basic functions as traditional PBXs, and can be useful to businesses of almost any size.

Further, as more businesses seek out the conveniences and cost-savings of VoIP telephony, IP PBXs in one of the forms mentioned above have become an increasingly common choice. Rather than trying to modernize an older PBX so it can work with VoIP calls, it often makes more sense to upgrade the whole system. Upgrading also gives buyers a chance to bring in new features which may have previously been unavailable.

Key Considerations

Hosted or on-premise. This is probably the most critical decision to make. Companies should look at both options. On-premise systems will typically have higher initial costs, and may also require periodic system maintenance. Hosted PBXs will cost less up front, and will be managed by the provider, but have higher recurring costs. The total cost of ownership for all potential systems should be compared.

Call capacity. PBXs can only handle a limited number of concurrent calls and a limited number of total extensions or “registrations.” (Each VoIP phone connected to the IP PBX requires a single registration.) Assess how many total connections you’ll need, count one for each hardphone and softphone you plan to connect, as well as any devices such as FAX machines that may also be connected via your existing phone service provider, and estimate how many calls your employees will be making and receiving simultaneously when you’re at peak call volume.

Unified communications. This term refers to a range of features that involve communicating across platforms and between different mediums. A common example of this is visual voicemail: a feature that automatically transcribes voicemail messages and emails the transcript to the recipient. Many IP PBXs have UC functions included.

Security. VoIP calls have special network requirements and they often don’t work with well with standard office firewalls. To avoid problems, ensure that your existing firewall is compatible with SIP and VoIP traffic. An alternative is to get an IP PBX that includes a built-in firewall, as many do. Many also include VPN gateways to connect with a corporate Virtual Private Network.

Finally, you can use a device known as a Session Border Controller (SBC), which provides additional security specifically for VoIP systems by policing the “pinholes” that you need to open in your firewall for your VoIP calls.

Auto attendant. This is the automated answering system that greets inbound calls, presents pre-recorded information and gives callers a list of extension options from which to choose. Most IP PBXs include auto attendants, but the level of functionality supported by different systems differs. Advanced IVR systems, the voice menus that allow callers to complete actions such as checking account balances over the phone, are generally only found in call center suites.

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Business VoIP Systems Pricing Guide

 

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