Service Change Entries - Avaya Nortel Communication Server 1000 Reference

Figure 130: Universal trunk card - jumper locations for NT8D14BA and NT8D14BB Release 9 and
below

Service change entries

The trunk type, terminating impedance, and balance network are selected by making service
change entries in the Trunk Administration program LD 14.
See Table 178: Trunk types - termination impedance and balance network (NT8D14BA,
NT8D14BB)
Software Input/Output Reference — Administration (NN43001-611) for LD 14 service change
instructions.
Before the appropriate balance network can be selected, the loop length between the near-
end and the far-end (a Central Office, for example) must be known. To assist in determining
Circuit Card Reference
on page 426 for the proper values for the trunk type and loop length. Refer to
Configuration
July 2011 425