The problem is that RFC 3261 that defines SIP has become "everything to everyone" and bloated in both size and in flexibility. For those of you that have deployed SIP-based solutions or SIP Trunking, ...

SIP trunking is a cost-effective option for modernizing legacy phone systems with minimal disruption. Discover the best SIP trunking providers and how to choose one in our complete buyer’s guide. I’ve ...

How To Set Up Free SIP Calling On Any Device Your email has been sent Most people communicating on the internet are using SIP calling. Here’s how to make free SIP calls — and when you shouldn’t.

Let's move past the technical issues and talk about a far more difficult challenge--the politics of SIP Interoperability. Earlier this week I shared with you a few thoughts on SIP Interoperability, ...