SIP.US 2026: Benefits, Features & Pricing

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Overview
Pricing and Plans
Features
Integrations
User Reviews

Overview

SIP.US

4.7

(85)

Pricing

Starting at $14.95 per month

About SIP.US

SIP.US is a cloud-based business VoIP solution that provides SIP trunking services for IP-PBX systems and analog and digital telephone adapters. Key features include a Tier-1 redundant network, toll fraud protection, direct inward dialing, support for dialer traffic and more.

SIP.US maintains real-time call data records (CDRs) which help users to keep track of operations and activities and understand their business needs. The solution also monitors the network for international call fraud in real time and deploys procedures to stop calls in progress and alert both customers and the network operation center in case of suspicious activities.

Additionally, SIP.US offers users the capability to apply nomadic e911 multiple direct inward dialing (DID) numbers and supports integration with various open source systems such as Asterisk, FreeSwitch, Elastix, PBX in a flash and more.

Services are offered on a monthly subscription basis that includes support via phone, email and online FAQs.

SIP.US Screenshots

SIP.US Pricing and Plans

Starting price: $14.95 per month

Free Trial

Free Version

SIP Channels

$24.95

per month

Plan includes:

Includes Local and Long Distance Calls to the Us48 States and Canada (Excluding NWT) at No Additional Charge. Excludes Any Local
State or Federal Taxes and/or Fees

Inbound DID Telephone Numbers

$0.00

per month

Plan includes:

All Inbound Calls Include CNAM Service Delivery Included
Enhanced Dids Include the Ability to Register a Location Address for 911 Calling (Test by Dialing 933)
You Are Able to Set PSTN Forward and PSTN Backup Redirects Per DID on the Web Portal
You Are Able to SET the 15-Character Callerid Name (CNAM) Value Per DID at No Charge on the Portal

SimpleFAX™ Service

$24.95

per month

Plan includes:

Adapter Comes Pre-Configured and Ready for Use Out of the Box
All Faxes Sent and Received Over Traditional Copper Lines (Pris)
High Reliability – No T.38 or Fax Over IP Problems!
Web Portal to View All Faxes Sent and Received

Fax-to-Email

$14.95

per month

Plan includes:

Change Your Fax Callerid Number Directly in Our Portal
Incoming Faxes Are Sent to Your Registered Email Address as a PDF
No Faxing Over IP – All Faxes Sent and Received Over Traditional TDM Circuits (PRI Lines)
Send Document Attachments From Your Registered Email Address as Outbound Faxes
View a History of Your Sent and Received Faxes on Our Web Portal

Business SMS

$19.00

per month

Plan includes:

10000 Message Plan Can Be Shared Across Multiple Dids. Other Plans Are Per-DID Only
Billing Is Calculated on a Per-Message Basis and Billed Once a Month on Your Rebill Day as a Separate Line Item
But Not All DID Telephone Numbers on SIP.US Can Be Enabled for SMS-to-Email Functionality
Incoming SMS Messages to the Enabled DID Will Be Sent to the Email Address(S) You Specify. You Can Also 'Send' SMS Messages via Email Using This Service. On the Management Page
Most
When Enabled
You Can Enable SMS Functionality on Your Dids That Support SMS as Well as Specifying the Email Address(S) Where the Messages Will Be Sent. You Can Also View Usage on Each SMS-Enabled DID

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SIP.US Features

Popular features found in VoIP
Caller ID
Call Monitoring
Call Recording
Call Routing
Computer Telephony Integration
Contact Management
IVR
Mobile Access
SIP Trunking
Voice Mail
More features of SIP.US
Call List Management
Call Reporting
Call Tracking
Call Transfer
Contact Database
Real-Time Monitoring

SIP.US Integrations

VICIdial

3CX

SIP.US User Reviews

Overall Rating

4.7

Ratings Breakdown

79%

15%

Secondary Ratings

Ease of Use

4.5

Value for money

4.6

Customer support

4.6

Functionality

4.5

Paul A.

Verified reviewer

Computer Software

11-50 employees

Used daily for more than 2 years

Review source

Reviewed June 2019

Great for trunks and hosted Asterisk

It provides an automated IVR service for our clients, and routes inbound calls to our operators.

Ratings Breakdown

Ease of use

Value for money

Customer support

Functionality

Pros:

We have had a hosted asterisk service with SIP.US for almost 8 years and we liked that we have been able to add custom code to our service to be able to better meet our needs

Cons:

There hasn't been anything that I would describe as a con.

Kimani D.

Verified reviewer

Computer Software

201-500 employees

Used daily for more than 2 years

Review source

Reviewed June 2019

Mostly good, some missing features

Overall we are very happy with the SIP.us solution. We have contractors all over the world, so having the ability to call people all over

Ratings Breakdown

Ease of use

Functionality

Pros:

- Ease of integration with the PBX (we use Asterisk) - Clear user guide and documentation

Cons:

- Mostly good for calls made to North American and western-European numbers. Not so good for international calls, especially to some countries - India, Russia and some Eastern-European countries (Romania, Bulgaria, Armenia come to mind). Some providers in these countries seem to detect that our calls are Voip calls and block them. And we have raised this issue with SIP.us, but received no feedback. This means we have to spend more money making phone calls via Skype. And Skype calls are expensive but always go thru, unlike calls made via Sip.us trunk lines. Now, I understand you may say it is not your fault that telcos are blocking calls made thru SIP. But from my PoV as a customer, what I see is simply that Skype-made calls work where SIP-made calls are failing to go through. So what is Skype doing that SIP cannot?

Reasons for choosing SIP.US

We have not exclusively chosen SIP over SKype. Rather, Skype complements the one area where SIP still fails us - making calls that are blocked because some telcos detect them as Voip calls.

RODNEY M.

Verified reviewer

Accounting

11-50 employees

Used daily for less than 6 months

Review source

Reviewed June 2025

UNSATIFIED CUSTOMER

so far terrible service, with little to no feedback. This is definitely not what I was hoping for in a company.

Ratings Breakdown

Ease of use

Value for money

Customer support

Functionality

Pros:

They merge successfully with Zoiper other than that so far i have complete wasted my time waiting for the services i paid for.

Cons:

I Paid for the services and i even wrote a ticket because their services still have me in demo mode after payment was received. I tried calling the customer service number, guy male who answered stated he can't assist me with the setup of my account so far, I'm definitely dissatisfied

David L.

Verified reviewer

Telecommunications

11-50 employees

Used daily for more than 2 years

Review source

Reviewed June 2019

Fantastic SIP Provider With Excellent Technical Support

We use SIP.US as the phone provider for our office's 40-extension phone system. We currently have toll-free and local numbers (DIDs) with them as well as some fax numbers.

Ratings Breakdown

Ease of use

Value for money

Customer support

Functionality

Pros:

- Completely self-service website. - Fantastic technical support that responds within minutes, usually. - Automated number port-in process. - Huge inventory of DIDs across the country. - SMS service is available on most DIDs.

Cons:

- Website is a little outdated. - Pricing is just fair, not great.

Reasons for choosing SIP.US

Friendliness of support agents and instant account activation.

Jason T.

Verified reviewer

Hospital & Health Care

51-200 employees

Used daily for less than 12 months

Review source

Reviewed May 2022

SIP.US VOIP Service Review

Ratings Breakdown

Ease of use

Value for money

Customer support

Functionality

Pros:

This service was very easy to setup and has been rock solid. There was a complete guide on how to setup our Grandstream UCM PBX with SIP.US and SIP.US also provided a phone number with the service. They have redundancy options and the quality of the phone calls are just fantastic.

Cons:

The toll-free cost per minute could be cheaper but really that's a minor issue... the overall experience has been excellent.

Reasons for choosing SIP.US

We use both - but our main product is SIP.US - the reason being is that it has been very stable and dependable.

Reasons for switching to SIP.US

The price points were much better with VOIP, we finally got CallerID, and we have more control over fail-over and other options.

Grant P.

Verified reviewer

Retail

51-200 employees

Used weekly for more than 2 years

Review source

Reviewed June 2019

SIP.US for Backup Phones

We use SIP.US to handle our calls and send them to voicemail when our main line is down. They have worked great for that purpose, and thankfully we don't have to rely too heavily on their service.

Ratings Breakdown

Ease of use

Functionality

Pros:

SIP.US works great for our backup phones. We use it irregularly, which means our main phone system is working, so that's good. The UX seems to have gotten a face lift recently, so I have been exploring it a bit to see if there are new features.

Cons:

The UX can be convoluted at times. Sometimes a person we had on backup phones ages ago will still get a call, and I have found it difficult to get him removed.

Reasons for choosing SIP.US

SIP.US offered us the best flexibility, and the option to pay for what we use. Most other options would have a base cost that exceeded what we wanted to pay.

Pablo I.

Verified reviewer

Computer Software

Self-Employed

Used daily for less than 12 months

Review source

Reviewed May 2022

Easy and Expensive

So far so good

Ratings Breakdown

Ease of use

Value for money

Functionality

Pros:

Easy to use, well explained, website is clear, simple and organized.

Cons:

Expensive, I don't have the ability to create sub-account for each of my clients under my name.

Reasons for choosing SIP.US

Twilio has so many services and I was confused at the beginning, Sip.us was simple and clear to understand for a beginner

Charles M.

Verified reviewer

Information Technology and Services

11-50 employees

Used daily for more than 2 years

Review source

Reviewed June 2019

Your experience may vary

I inherited the phone system from the original individual whom had passed away prior to my being hired. Though the user experience has changed with an overhaul over the main site itself, there are still many things that are a pain to do. The bills are also very vague & fixing charges has been a massive pain. Items will have generic listings and refer to something you wouldn't have even thought of. I've tried since January to get credited for an item I was told was 1 thing but turns out it was something we no longer had and while it was removed, the credit was never applied. Weeks can go by without a response to a query or action is taken without a response back. Part of these issues could very well be that I am not the primary on account, but I am the one that handles it. Improving the communication could possibly do wonders for the business as a whole.

Ratings Breakdown

Ease of use

Customer support

Functionality

Pros:

You can login via root and make changes to system via command line. This can be a big plus if you're wanting to make custom edits or security changes to the system to meet your companies' needs.

Cons:

The servers were not kept up to date by provider as I was told they would be, so our software has fallen too far behind the current available branches to update. This mostly means I have to keep within specific lines of phones and forced to manually deploy each new phone. This also means that I don't have access to command line tools I would normally have to trouble shoot connection issues the OS is way out of date as well and can't be updated without a massive headache which I haven't found to be worth the effort.

Robert H.

Verified reviewer

Government Administration

201-500 employees

Used daily for more than 2 years

Review source

Reviewed May 2022

SIP.US as SIP Trunk Provider

Using SIP.US, I was able to lower my monthly phone costs by 10s of thousands of dollars per month.

Ratings Breakdown

Ease of use

Value for money

Customer support

Functionality

Pros:

I had poor results transitioning from POTS/ISDN to SIP with another provider. SIP.US made the port much simpler and handled the interaction with an uncooperative telco. The website management capability is outstanding. Updating e911 data as people move locations is as simple as entering the info and clicking SAVE. The support portal is easy to use and very responsive. Detailed billing is easy to view.

Cons:

The one are that could be improved is notifications when you exceed trunk capacity. Rather than a notice that you exceeded it at some time in the past month, I'd like something closer to real-time notification with time/date to allow me to better adjust my trunk requirements.

Reasons for switching to SIP.US

They were unable/unwilling to follow through on the initial port. Support was unhelpful, leaving me to attempt to broker between two companies - neither of whom would work with me.

Verified

Reviewer

Information Technology and Services

11-50 employees

Used daily for more than 2 years

Review source

Reviewed June 2019

Setup and forget and it just works