Cisco Blogs

Is SIP Trunking the next big thing?

- April 28, 2009 - 4 Comments

I enjoy following Eric Kapf as I get his emails/blog entries for VoiceCon eNews. This time is no exception. He asserts in his latest post (The Mystery of SIP Trunking) that SIP Trunking is a much bigger deal than anyone is noticing right now. He points to some strong anecdotal evidence that includes a session on this topic being one of the most well attended at VoiceCon plus a few other indicators. Short and sweet article (longer than this reference) . Makes sense to me. What do you think? I bring this up because we are working on Episode 46 (to air on June 25) and SIP Trunking (as all as the growing list of SIP enhancements Cisco has made) as key topics in a ‘why migrate’ story around Unified Communications. Give us your thoughts below! RobbFollow me on Twitter? Must See TechWiseTV….

In an effort to keep conversations fresh, Cisco Blogs closes comments after 60 days. Please visit the Cisco Blogs hub page for the latest content.


  1. I think SIP trunking is a great option since it allows for quick connections to the pstn without the wait for standard copper TDM equipment to be connected. This give much more flexibly when using sip.

  2. It's really a nice article.We should also try it out...

  3. Tina/Rob, Expanding on Tinas point, because there are two many uses for SIP Trunking. Including Enterprise to SP and between realms of Communications within and Enterprise. I think that the number of the customer requirements and features for gear to assist with SIP Trunking will be bigger then the gear required for TDM trunking.

  4. Hi Robb - Just to chime in here, there seems to be two sides to the SIP trunking discussion. One is using SIP to the carriers vs. PRI. The other being to use SIP to integrate a PBX to an IP system. I'd love to hear folks expand on the specifics they are seeing in either scenario!