Stack IT On Enterprise SIP
PTT technology is not too far from enterprise adoption, though the most obvious and immediate implementers of PoC technology will be wireless carriers with a large subscriber base. As SIP becomes de facto for enterprise voice and IMS (IP Multimedia Subsystems), layering the added service of PTT is the logical next step. Because SIP is an IP-routed protocol, an enterprise needn't develop a 3G cellular network to provide this service. Instead, it can use mobile carrier data infrastructures to route VoIP and SIP traffic to its IMS system. Whether mobile carriers will be agreeable to this remains to be seen.
Nonetheless, even if 3G carriers refuse to open the doors to enterprises wanting to use their networks to carry out PTT capabilities, all hope is not lost. Since one of the primary objectives of the PoC development effort is to be network-agnostic, generally available wireless technologies, such as Wi-Fi, can be used.
Despite the optimistic outlook for PTT, three years after being dubbed the "killer app" within the SIP community, its adoption is running at a slow pace. But it's important to remember that PoC 1.0 was just released last year, and the OMA is working on the second version. The new spec promises improved interoperability not only between enterprises and carriers using the PoC standard, but also with those using other PTT technologies. Nevertheless, keep your speed dials and ringtones fresh--any form of enterprise-ready SIP PTT is still at least a year or two away.
Matt Vlasach is CEO of Pacific Swell Networks. Write to him at [email protected].
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