In this section:

DSC 8000 External Communication

The DSC 8000 contains onboard IP Ethernet switches. These switches control the internal backplanes and also simplify the external IP address. The IP switches are IPv6 ready Layer 2/3 that reliably communicate over dual Ethernet backplanes offering a higher degree of speed and reliability than would be available with separate cabling for each card to external routers.   

IP access to the DSC 8000 is used to perform

  • Operations, Administration and Maintenance (OAM) functions
  • SIGTRAN and other Signaling Gateway (SG) connectivity
  • Diameter Network Connectivity
  • a feed on TCP to external monitoring and billing systems

The OAM access is provided using a shared IP address on the Management CPUs. If one Management CPU is inaccessible, access will immediately be switched to the other Management CPU in the system. For SIGTRAN and/or Diameter traffic, where a greater degree of control is required, an IP address (or a pair of addresses) is given to each Routing CPU for the termination of SIGTRAN associations.

The Ethernet connectivity features are as follows:

  • 2 OAM ports
  • 2 to up to 6 SIGTRAN and Diameter ports (2 per shelf)
  • 2 to up to 6 Monitoring ports (2 per shelf)

The DSC 8000 can support either RJ-45 1gE connectors or SFP connections for 10gE. The 10gE connectors available are as follows:

  • 10/100/1000 Base-TX SFP Transceiver Module (Copper connection)
  • 1000Base-X Multimode SFP Optical Transceiver Module (850nM)
  • 1000Base-X Single Mode SFP Optical Transceiver Module (1300 nM)

The following figure shows how the connections to the relevant CPUs are made through the IP switches rather than directly.

IP Connections for OAM and SIGTRAN Connectivity

DSC 8000 Internal Communication

The following figure shows the internal communication between the system-level cards and networks on the multi-shelf DSC 8000. The key to the DSC 8000 flexibility and scalability is that it comprises a network of cohesive single card computers and IP utilities that are linked by solid, managed IP networking on a reliable dual IP backplane. IP signaling is not just a part of what we do; it is built directly into the core of every DSC 8000.

DSC 8000 Internal IP Network

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