Avaya Communication Servers

The Nortel Communication Servers is a series of products that Nortel manufactures (now acquired by Avaya) for telephony communications. The equipment can support TDM and VoIP services for 150 users to 200,000 users or more. This product is part of Nortel's Unified Communications system now acquired by Avaya.
Scaling
*Communication Servers
**Communication Server 1000S CS1000S (150-1,000 users)
**Communication Server 1000M CS1000M (1,000 - 10,000 users)
**Communication Server 1000E CS1000E (100 - 22,500 users)
**Communication Server 1500 (48,000 lines 8,400 trunks TDM and VoIP)
**Communication Server 2100 (230,000 ports, 125,000 IP phones, 150,000 analog telephones, 125,000 digital telephones, 200,000 IP trunks, 50,025 digital trunks, 32,000 analog trunks, 200,000 SS7 trunks, 4,093 H.323 gateways, 112,000 nodes per host, 99,999 ACD agents