Specifications

4-12
Cisco MGX 8260 Command Line Interface Guide
Release 1.2, Part Number 78-10987-01 Rev. B0, January, 2002
Chapter 4 Service Management
Configuration Tasks for Lines
A single DS3 can map to multiple NSCs or multiple DS3s can map to a single NSC. Map definitions
can be organized or arbitrary, but often occur in contiguous groups because you can define a range of
mappings with a single command. The MGX 8260 Media Gateway stores map definitions in a map
table, as follows:
You can initialize or alter the map table from any of the management interfaces or from the command
line. This section describes how to add, change, or delete entries from the command line.
Adding Map Table Entries
You can add map entries individually or within a range. When adding individual map entries, the
following restrictions apply:
• Map commands can’t duplicate existing entries.
• Map commands can’t specify non-existent source or destination lines. For information on adding
lines, see the “Configuring DS1 or E1 Lines” section on page 4-3 and the “Configuring DS3 Lines”
section on page 4-8.
You simplify the process of mapping DS3 to DS1 lines by mapping a range of DS1s rather than
individual lines. A map range is added in a sequential and contiguous manner, and can cross either
source or destination boundaries.
The entire range of source and destination lines must be contiguous. The system stops mapping lines if
it encounters a source or destination that is already assigned, leaving map pairs before the contiguous
break assigned and the rest unassigned.
To add map table entries, enter the addm13 command as described in the “addm13” section on
page 9-21.
For example, in an MGX 8260 Media Gateway without any existing mapping, specify the maximum
number of mappings as follows:
addm13 1 1 1 1 168
To add three map entries, enter the following command:
addm13 1 3 1 1 3
This example creates the following map table:
Ta b l e 4 - 1 D M C M a p Ta b l e
Source DS3 Line Source DS1 Line Destination NSC Slot Destination DS1 Line
11116
1211
1312
1413
12851
Table 4-2 DMC Map Table for the addm13 Command
Source DS3 Line Source DS1 Line Destination NSC Slot Destination DS1 Line
1311