Nortel DMS-100 Series Maintenance Manual page 188

4-20 ESA maintenance overview
Interswitch and intraswitch channels make call connections through the OPM
and do not involve a host connection. The interswitch and intraswitch abilities
allow call processing to continue in ESA operation.
On OPM ESA entry, the system configures OPM channels. The channels of
all DS-1 ports are not equipped except for primary ports 0 and 1. Ports 0 and
1 must be equipped in OPM ESA.
More interswitch channels are available for unit-to-unit calls when the system
arranges C-side channels on ESA entry. Refer to the following table for a list
of the channel breakdown in OPM ESA.
Table 4 Channel availability after ESA entry
Port number
0
1
2
3
4
5
297-8361-550 Standard 04.02 December 2004
Number of
intra Intra
channels channels
6 2, 7, 12, 18,
23, 28
6 2, 7, 12, 18,
23, 28
18 2, 3, 5, 7, 8,
10, 12, 13, 15,
18, 19, 21, 23,
24, 26, 28, 29,
31
18 2, 3, 5, 7, 8,
10, 12, 13, 15,
18, 19, 21, 23,
24, 26, 28, 29,
31
18 2, 3, 5, 7, 8,
10, 12, 13, 15,
18, 19, 21, 23,
24, 26, 28, 29,
31
18 2, 3, 5, 7, 8,
10, 12, 13, 15,
18, 19, 21, 23,
24, 26, 28, 29,
31
Number of
inter Inter
channels channels
0 none
0 none
12 1, 4, 6, 9, 11,
14, 17, 20, 22,
25, 27, 30
12 1, 4, 6, 9, 11,
14, 17, 20, 22,
25, 27, 30
12 1, 4, 6, 9, 11,
14, 17, 20, 22,
25, 27, 30
12 1, 4, 6, 9, 11,
14, 17, 20, 22,
25, 27, 30