Choosing IP connectivity enables a distributed architecture
In putting IP technology at the heart of the Prosody X design it is much simpler, due to the ubiquity of Ethernet in IT networks, to build multi-board, multi-chassis and multi-location systems using Prosody X. So if the high channel counts of a single Prosody X board are not enough, then it is easy to build multi-board systems.
The traditional way
Before VoIP entered the telephony world, we depended on TDM technology and an array of disparate CAS and CCS type PSTN protocols, and most of the voice-based solutions had a common architecture, simply described as a host server with telephony boards. Voicemail, interactive voice response (IVR), call centre or fax broadcast solutions had a common architecture with all parts integrated in one physical unit.
Figure 1 - traditional voice-based solution architecture
- Scalability – difficult to add capacity with minimal added cost
- Redundancy or adding fault tolerance – technically cumbersome to achieve and almost doubles the CAPEX
Remote system management, hitless software upgrades, and hardware maintenance in the system without interrupting the service, also add to the comprehensive list of system requirements that lead to increased architectural complexity and spirals the cost of solutions utilising the traditional architecture.
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