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Communication Server 1500

The Communication Server 1500 is a second-generation Nortel Carrier VoIP softswitch that provides a powerful platform for IP communication services. This IMS-ready softswitch targeted toward small and medium-sized service providers in North America also offers the full range of legacy network interfaces and regulatory features for operation in today’s network.

Key Features:
  • Fully featured residential service
  • VoIP with service transparency
  • Centrex IP with service transparency
  • Directory Number Hunt
  • Local Number Portability
  • SS7 A link concentration
  • E911
  • End office or Access Tandem operation
  • Web based subscriber self-care and feature control
  • Graphical User Interface for provisioning
Features & Benefits


  • Fully featured residential service
  • Centrex and Centrex IP
  • Directory Number Hunt
  • AIN 0.1
  • Local Number Portability
  • SS7 A link concentration
  • E911
  • CALEA Surveillance
  • End office or Access Tandem operation
  • Integrated voice mail and multi-port conference
  • Call logging
  • Web based subscriber self-care and feature control
  • Integrated AMA collection
  • Graphical User Interface for provisioning


  • Small physical size. High-port density
  • Inexpensive start-up cost for small systems
  • Modular growth and scalability
  • Low power consumption. 530 Watts starter system; 1152 Watts fully configured.
  • IP infrastructure and switching fabric
  • Full feature set for both IP and TDM subscribers
  • Integrated session border controller
  • Integrated TDM gateways provide seamless inter-working between VoIP subscribers and TDM subscribers
  • Re-use of Nortel line peripherals
  • Native SIP call control
  • Well positioned for future IP applications

Technical Specifications

Hardware Components
  • Core Module (CM) - The Core Module provides the processing for voice and media services, maintenance, administration and provisioning. The CM also provides the IP fabric for connecting media and voice endpoints. The CM is internally redundant and is provided in a 2U rack mount chassis.

  • Port Module (PM) - The Port Module provides the gateway function for TDM interfaces. Port modules are matched to the specific type of interface that is provided. DS-1, DS-3, DS-30A (Copper interface to Nortel peripherals) interfaces are provided. The PM is internally redundant and is provided in a 1U rack mount chassis.

  • Alarm Module - The Alarm Module provides collection and reporting of alarms.

  • APMAX Application Server - Application platform to enable supplemental services. Initial services are announcements, unified messaging, conferencing, web server for subscriber feature control and self care. Additional services are planned. Application Servers are provided in a redundant pair of 1U chassis.
Power Requirements
  • Total system power consumption fully equipped = 1152 Watts
  • Core Module = 254 Watts
  • Port Module = 59 Watts
  • 250,000 BHCA (Busy Hour Call Attempts)
  • Largest configuration, configured with a total of 10 Port Modules:
    • Up to 48,000 lines (combination of TDM and VoIP)
    • Up to 8,400 trunks (combination of TDM and VoIP)
  • Smallest configuration, configured with 1 Combination Port Module:
    • Up to 3,100 lines (combination of TDM and VoIP)
    • Up to 600 trunks (combination of DS1 and VoIP)
VoIP Interfaces
  • Physical Interface:
    • Gigabit Ethernet IEEE 802.3ab
  • Protocols and applications:
    • H.248 Trunk gateways
    • H 248 Lines
    • Session Initiation Protocol (SIP) Lines
    • Session Initiation Protocol (SIP) Trunks  
TDM Interfaces
  • Physical interfaces:
    • DS-1 (32 ports per module)
    • DS-3 (2 ports per module)
    • DS-30A (Interface to Nortel line peripherals 32 ports per module)
  • Protocols and applications:
    • SS7 ISUP (ANSI version)
    • MF interoffice (North American signaling)
    • ISDN Primary Rate Interface (PRI)
    • Nortel line peripherals and remotes
    • GR-303
If you have any queries or would like more information about any of the solutions outlined, please contact us or request a call back. Alternately, you can call us on 905 695 2241 or 877 888 3588 for more immediate help and advice.

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