Nortel Networks 1000E User Manual

 Connecting CS 1000E system components

Communication Server 1000E

Installation and Configuration

To separate the redundant Call Servers, the ELAN subnet and the subnet of 
the High Speed Pipe (HSP) can be extended between the two processors with 
an Ethernet switch, using Layer 2 protocol.

If the two Call Servers are collocated, they can be connected using a standard 
CAT5e or CAT6 crossover cable, limited to 100 meters in length.

For detailed information on Campus Redundancy, refer to Communication 
Server 1000: System Redundancy (553-3001-307).

The Layer 2 switch allows the ELAN subnet and the subnet of the High Speed 
Pipe (HSP) to be extended between the two processors. The 
BayStack 470-24T provides full duplex wire-speed 100BaseT with no 
significant packet loss (less than 0.001%) and delays of less than 100 usec. 

The method used to connect Call Server 0 to Call Server 1 depends on the 
proximity of the units. If the units are co-located, follow Procedure 12 to 
connect the Call Servers. If the units are configured for Campus Redundancy, 
follow Procedure 13 to connect the Call Servers. 

Follow Procedure 12 to connect co-located Call Servers.

Plug one end of the CAT5E RJ-45 crossover cable (NTRC17) into the 
LAN 2 connector on the front of Call Server 0.

Plug the other end of the CAT5E RJ-45 NTRC17 crossover cable into the 
LAN 2 connector on the front of Call Server 1.

The MultiLink Trunking (MLT) feature of the BayStack 470-24T enables the 
two uplink fiber ports to be grouped but is not solely necessary for the two 
uplink fiber ports to be linked. Grouping the uplink fiber ports increases 
aggregate throughput up to 2 Gbps between sides with active redundant links.