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Media Center

Enterprise Sourcing of SIP Trunking Services

  • Webtorials
  • 2/12/2014
  • Jack Deal & Hank Levine

Over the last few years, large enterprises have begun to reap the benefits of moving from "traditional" TDM technology - PBX trunks and the like - to SIP trunking for voice services. SIP, if anyone doesn't know it by now, is basically a way to provide voice as an application over IP data networks. To be precise, traditional TDM trunks use dedicated bandwidth for each call, and the call control is provided by in-band signaling or, if the trunks are ISDN trunks, the "D" channel. SIP (Session Initiated Protocol) provides a standardized signaling protocol for Voice over IP calls. 

LB3 and TC2 are doing a lot of transitions from TDM to SIP - it's moved from "cutting edge" to "off the shelf" and is now part of pretty much every Fortune 100 network RFP. Like all technology transitions, it's complicated. When considering a move from "traditional" voice to SIP trunking, enterprises may find the following of interest...