SIP.US saved the day and changed how I look at phone service forever.
Value for Money
When I happened across SIP.US in a google search on the weekend when our physical phone system crashed and we had to build a virtual one quickly and get it up and running before Monday, I had never used SIP trunks before. I had not used them because I was unsure of the technology and worried about call quality, the phone company always wanted to bring in a separate circuit to run SIP trunks (more bureaucracy and red tape). SIP.US was fast and easy to get going and JUST WORKS! We enjoy great call quality with SIP.US and have the flexibility to add and remove phone numbers and trunks at will. We can respond to market conditions instantly scaling up or down at will. I wish I would not have waited so long to give this service a try it really does change the way that we think about voice service. I suggest using the free trial and just giving it a shot, once you sign in and see the portal and all that you can do INSTANTLY you will be hooked.
SIP.US is very quick and easy to set up and use. I set it up at around 10pm on a weekend when our phone system had died and we had to recreate a virtual one that could not connect to our existing PRI. Without talking to anyone I had a SIP trunk up and taking calls in less than half an hour without having any previous SIP trunk experience. The next day (on a weekend!) I received a call from the executives at SIP.US to make sure I had everything that I needed. The support team proceeded to help us get all of our numbers ported as quickly as possible (you can do this from the web portal but they were just being nice.) Once I understood the ease of use (no calling and waiting for the phone company to wait through their bureaucracy), reliability and clarity of using SIP trunks through SIP.US I could no longer imagine relying on a traditional phone company for phone service. SIP.US is a game changer, we have never looked back. SIP.US is how phone service should be.
I have not found anything to dislike. SIP.US does what it says it is going to do and keeps on doing it. Full control of my phone service from a web browser, what's not to like?