Migrating large TDM PBX systems to VoIP solutions

This article describes aspects of the migration process from a TDM (Time Division Multiplexing) PBX to a VoIP solution like Office Communications Server.   TDM to VoIP migration using PRI tie lines   A large enterprise TDM PBX consists of one or multiple PBX nodes. All endpoints (mostly PBX phones) on one site are connected…

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