SIP trunking is financially attractive. But it is important to size your SIP trunking to support the calling services that your enterprise requires The proliferation of SIP trunking makes the ...

But like PRI, the SIP Trunk service provider supplies the signaling and transport services to the customer site (s), which interconnect to the (certified) CPE. Some providers who make extensive use of ...

I am setting up an IP phone system for an office with 20 people. Can anyone recommend a reliable SIP trunk provider? We have a Grandstream UCM6208 PBX. Most calls made will be international. I am ...