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VoIP Systems

Cox Takes a Gulp of SIP

Although most residential cable VOIP services are based on the CableLabs PacketCable 1.x platform, which basically replicates POTS, several MSOs are starting to look to SIP (Session Initiation Protocol) to power their business-class voice offerings.

And Cox Business, considered the cable industry's poster child for how to carve out success in the world of business services, appears to be playing SIP to the hilt, particularly after it became the first cable MSO to join the SIP Forum . (See Cox Biz Joins SIP Forum.)

But Cox is not the first cable entity to throw in with the group. CableLabs is also a participant, according to the SIP Forum's membership listing.

For Cox, supporting SIP is about supporting where the MSO believes the future of voice services will be. And it's already partly there, having introduced a SIP-based service/app called VoiceManager in late 2007. Cox has introduced that platform, which integrates with traditional desktop phones, PCs, and wireless devices, in Connecticut, Rhode Island, Oklahoma City, Omaha, Neb., and Wichita, Kan., and expects to offer it in several more markets by the end of this year.

Further out, Cox Business will roll out "SIP trunking," a service that will connect Cox Business's IP network with SIP-enabled IP-PBXs.

— Jeff Baumgartner, Site Editor, Cable Digital News



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