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http://www.nortelnetworks.com/produc...4_0/index.html

Communication Server 1000 (formerly Succession 1000) Release 4.0 is enterprise call server software that supports centralized or distributed collaborative enterprise environments with distributed call server and gateway redundancy, IP telephony scalability up to 15,000 IP clients per call server, SIP-based interworking with Nortel Networks MCS 5100 portfolio and support for an extended range of communication clients. Release 4.0 is common across CS 1000 and Meridian 1 systems, providing a seamless migration path for Meridian 1 upgrades.

Key Features:

- Release 4.0 introduces Communication Server 1000E, a new highly scalable, fully redundant configuration of the CS 1000 portfolio that offers increased call processing power with a Pentium-based CPP processor, capable of supporting up to 15,000 IP clients per call server. Distributed call server redundancy with failover capability provides call processing and telephony features across an IP network.

- Call server geographic redundancy and mirroring allows redundant call servers to be physically distributed up to 8 miles across a campus environment to ensure fault tolerance and disaster recovery.

- Full SIP support providing an industry standard SIP interface for IP peer operation and seamless interworking of business telephony and rich media services.

- SIP IP interoperability enhances integration between system platforms and applications including Nortel Networks Multimedia Communications Portfolio as well as 3rd party gateways, terminals, and services for improved access to productivity enhancing capabilities.

- Extended Media Gateway support including Survivable Remote Gateway, Branch Office, Meridian 1 11C conversion to a branch media gateway, 3rd Party with SIP and H.323

- Extensive client portfolio to meet diverse end-user requirements including next generation IP phones, software phones, Mobile clients, 802.11 WLAN VoIP phones, Key Expansion Module as well as digital and analog phones.

- Over 650 features including: 6 Party Conference (62 Party Conference with Integrated Conference Bridge), Attendant Recall, Automatic Busy Redial, Call Duration Display Timer, Call Forward (9 types), Call Join, Call Park, Call Transfer, Call Waiting, Calling Line Identification, Calling Party Name Display, Charge Account Codes, Controlled Class of Service, DID Route Control, Flash, Hold, Hunting (6 types), IP Call Recording, Malicious Call Trace, NAT Traversal, Network Virtual Office Login, Override Position Busy, Personal Directory, Redial List and Callers List, Remote Message Waiting, Ring Again, Trunk Route Optimization - Call Modification and many more.

Benefits

Leadership & Innovation:
Incorporating leading technologies such as SIP, enables customers to develop competitive advantage. With SIP customers can readily implement multimedia applications that enhance user interactions, collaboration tools that increase business agility, and personalization capabilities that simplify communications and increase productivity. As an industry standard, SIP allows a higher degree of interoperability and deployment flexibility within a converged network.

Service Ubiquity:
Provides centralized access to information and communication services on demand. Supports client/location mobility with support of 2210/2211 802.11 wireless phones and Mobile Voice Client 2050. Increases productivity with expanded telephony features supported on IP phones including Personal Call Directory, Redial and Call Logs and the introduction of next generation converged desktop clients. Supports tighter integration with MCS 5100 client and IM usability enhancements including H.263 video support for soft clients, and IM chat, screening and routing capability.

Geographic Flexibility:
Allows extreme flexibility in placing resources where they're needed most as well as easing installation and management challenges. Distributed, survivable, and redundant resources such as call servers and a wide range of supported media gateways can be placed closest to where they are needed and used most, yet still managed from a central location.

Business Continuity:
Delivering added resiliency and reliability, Release 4.0 redundant call servers can be geographically dispersed as well as provide live mirroring over a layer 2 network to ensure rapid recovery from site or service failures. Security & QoS monitoring enhancements including client firmware updates, new SNMP alarms, increased support of VLANs, VPN and NAT, and new E911 call reporting features, allow organizations to protect themselves against business and communication service disruptions.

Seamless Scalability:
The modular design of systems within Nortel Networks converged business architecture enables flexible deployment options and maximum scalability. Release 4.0 call servers increase support from 10,000 to 15,000 users per call server. H.323. virtual trunk support has expanded from 384 to 1200 virtual connections between systems enhanced with H.245 tunneling signals or up to 1800 connections per signalling server with the new SIP protocol. ESN Call Routing has been expanded to support from 1,000 to 16,000 locations.