Ericsson LBI-39224 manual Conventional Channel Allocation, 146

LBI-39224

channel at one CEC/IMC), or eight (8) CEC/IMCs in a StarGate network may each contain up to a maximum of thirty-two (32) conventional channels. In both of the preceding examples the highest conventional channel in this configuration would actually be 256; however, channel 256 cannot be used due to CEC/IMC call message formats. The StarGate conventional channel configuration can be spread over more CEC/IMCs by limiting the maximum number of conventional channels per CEC/IMC. The maximum number of conventional channels per CEC/IMC must be specified when installing Enhanced StarGate (V4.0 or later) software. In a StarGate network, the maximum number of conventional channels at each CEC/IMC must be equal, i.e. all 64 or all 32 or all 16, etc. The allocation process is described in Conventional Channel Allocation.

Conventional Channel Allocation

Each CEC/IMC in a StarGate network is assigned fixed conventional channel allocation numbers based on the maximum number of conventional channels allowed per CEC/IMC and the CEC/IMC "switch assignment number" (sometimes referred to as "node number", "node assignment number" or "device ID"). Both of these parameters must be specified when installing the CEC/IMC Manager software. This is accomplished using an off-line program, UF_CONV.EXE, which is included with the CEC/IMC Manager software package. If UF_CONV.EXE is not executed, the maximum conventional channels per CEC/IMC defaults to 64.

NOTE

UF_CONV.EXE must be executed if upgrading CEC/IMC Manager software from V3.0 (or earlier). See Software Release Notes SRN-1000 for details.

When the UF_CONV.EXE program is executed, it prompts the user for the maximum number of conventional channels allowed per CEC/IMC (default = 64) and the CEC/IMC switch assignment number (default = 33). It then converts all existing conventional channel allocation numbers (1 – 64) to new numbers based upon the user-entered values. As stated previously, the maximum number of conventional channels must be equal at all CEC/IMCs in a StarGate network. Also, the CEC/IMC switch assignment number set via UF_CONV.EXE must

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