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Cablevision's Optimum SIP Trunking Now Certified With 2 Cisco PBXs
Cablevision Systems Corp.'s Optimum Voice SIP Trunking now is certified for two of Cisco's unified communications PBXs. Optimum's SIP trunking works with Cisco's UC320 and the UC500 series PBXs. When companies combine one of the platforms with SIP trunking, they save money because they are not
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