TOIP work at SGS

Migration of the existing ALCATEL automatic switch via the CISCO BE6000 collaboration platform.
Replace an ALCATEL PBX at the end of its life with a CISCO BE6000 version 11.5 collaboration platform. The following applications have been deployed:
- Call processing server (Cisco Unified Communication Manager)
- Voicemail Server (Cisco Unity Connection)
- Presence and Instant Messaging Server (Cisco Unified Presence Server)
- Billing Server (Billy Blue 4)