Although there are still a few most VoIP deployment of security features, or widely used, but the VoCable still has certain security implementation that part of the market of cable TV service providers have long worried about its service based on cable line will have security and theft problem, therefore, the suppliers in the process of entering the voice market actively promote security features, it is not surprising that, PacketCable specifications set is part of the CableLabs plan, including a complete security voice communications specification, VoIP companies from PacketCable CableLabs has been completed in the process of testing and certification work greatly benefit,
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