43% of North American Enterprises Now use SIP Trunking

It is a reasonable measure of the growth of SIP trunking that sales of session border controller sales have grown 70 percent in 2010, according to Infonetics Research.

"In our recent SIP Trunking Strategies survey of North American enterprises, 43 percent of respondents said they are using SIP trunks in some capacity, although they are not completely displacing PSTN connections," says Diane Myers, Infonetics directing analyst for VoIP and IMS.

"All indications show that as businesses upgrade their voice infrastructure, they are making the move to SIP trunking, which will continue to drive growth of enterprise SBCs," says Myers.

Infonetics Research: SIP trunking drives 70% jump in enterprise session border controller market