Nortel 1000 Description, Installation And Operation Manual page 23

Note: When upgrading software, memory upgrades may be required on
the Signaling Server, the Call Server, or both.
System migration
When particular Meridian 1 systems are upgraded to run CS 1000 Release 4.0
software and configured to include a Signaling Server, they become
CS 1000M systems. Table 1 lists each Meridian 1 system that supports an
upgrade path to a CS 1000M system.
Table 1
Meridian 1 systems to CS 1000M systems
This Meridian 1 system...
Meridian 1 PBX 11C Chassis
Meridian 1 PBX 11C Cabinet
Meridian 1 PBX 51C
Meridian 1 PBX 61C
Meridian 1 PBX 61C CP PII
Meridian 1 PBX 81
Meridian 1 PBX 81C
Meridian 1 PBX 81C CP PII
For more information, see one or more of the following NTPs:
• Communication Server 1000M and Meridian 1: Small System Upgrade
Procedures (553-3011-258)
• Communication Server 1000M and Meridian 1: Large System Upgrade
Procedures (553-3021-258)
• Communication Server 1000S: Upgrade Procedures (553-3031-258)
About this document
Maps to this CS 1000M system
CS 1000M Chassis
CS 1000M Cabinet
CS 1000M Half Group
CS 1000M Single Group
CS 1000M Single Group
CS 1000M Multi Group
CS 1000M Multi Group
CS 1000M Multi Group
IP Trunk Description, Installation, and Operation
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