Enterprise can choose according to actual traffic, to dispatch communication VoIP voice gateway platform and different number of interface, very simple to use original data private network ability to add (completely) under the business operation of IP phone functions, without affecting the original business and the corresponding configuration, typical applications are in the future - communication VoIP gateways FXO/FXS/E1 interface directly with the center or branches of PBX (small program-controlled or group telephone) directly connected, the use of PBX exchange capacity automatically turn to walking on VoIP gateway data special line, only when the users in the use of dial IP phone on extension TeFuHao (e.g., can be set to \ \ "0"), you can directly dial IP phone, thus saving a lot of calls,
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