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Leveraging Existing PBX Assets


As businesses continue to seek new ways to reduce costs and implement Unified Communication (UC) applications to improve employee efficiency within their network, more and more of them are making the transition from their current, trusted and proven TDM-based telephony architecture to a SIP-based network.

Sonus SBCs provide multi-vendor equipment support and the interworking needed to reliably and effectively communicate with legacy communication solutions, including existing PBX equipment. Sonus SBCs allow both TDM and SIP trunks to communicate simultaneously and, as a result, they enable enterprises to migrate their entire infrastructure at one time or piece-meal, without having to completely upgrade all the equipment in their network at once.

The Sonus Enterprise Solution provides:
  • Analog Migration – any-to-any connectivity between analog and TDM, H323 and SIP devices, enabling enterprises to rapidly migrate analog phones onto SIP-based networks
  • Media Interworking – allows existing TDM-based solutions (Fax, IVRs, DTMF) to effectively and reliably communicate over SIP
  • SIP Interworking between PBXs – provide TDM to SIP and SIP to SIP interworking between your existing PBX installed base as you transition your network
  • Centralized dial plans - no need to change dial plans and routing on every PBX in the network

Figure 1: Leveraging Existing PBX Assets

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