|“For a service that was forecast by Gartner last year to be part of a more than $2 billion market segment by 2011, SIP trunking remains one of those technical phrases used in vendor circles that is marched out with pride to prospective distributors and customers and received by the marketplace with bewilderment.”|
I’m always extremely impressed when marketing people actually demystify terms, instead of spinning hype and building the “baffle ‘em with BS” model to new levels. In this article, Joel Maloff, VP of Marketing for BandTel, explains SIP trunking. Here’s an excerpt:
In a survey commissioned by my company earlier this year, we discovered that even so-called industry experts — analysts, reporters, and others — could not agree on a definition for SIP trunking, nor could they consistently identify the leaders in delivery of SIP trunking services. However, it is not hard to understand the confusion in the general marketplace. For example, a February 2008 Internet Engineering Task Force (IETF) draft document entitled “What is aSession Initiation Protocol ( News – Alert) (SIP) Trunk Anyway?” provided the following definition:
A SIP trunk is a virtual sip entity on a server constrained by a predefined set of polices and rules that determine how to process requests. (J. Rosenberg, 2008, http://tools.ietf.org/id/draft-rosenberg-sipping-siptrunk-00.txt)
No wonder there is confusion!
The same draft also describes SIP trunking in more mainstream circles as a service for enterprises that allows connection to the PSTN as a displacement for circuit-based connections, and as a replacement for costly leased lines connecting distributed telephone systems within an enterprise.
So let’s cut through the mystery and confusion. SIP trunking, simply put, is a way for organizations to accomplish something that they already do, but for less money, with equal or better quality, and with greater functionality. It is also a way for enterprises that were too small and could not afford leased line services to achieve comparable benefits as the big boys but for much more attractive fees than previously. All of this is now achievable because of the underlying packet-switched technology of the Internet as opposed to circuit-switched architecture from the past. SIP is simply the framework that vendors and service providers have agreed to use to accomplish the completion of telephone calls and much more.
Another challenge is that SIP trunking providers differ from one another, and can roughly be grouped in the following three categories: SIP trunks via dedicated lines, SIP trunks in conjunction with hosted services, and pure SIP trunking providers.