Nortel Meridian Meridian 1 Feature Description And Administration page 633

Error Handling on ISDN Signaling Link Analog E&M TIE Trunks
Feature implementation
Task summary list
LD 16 – Configure ISL on Analog Trunks.
Prompt Response
REQ NEW
CHG
TYPE RDB
...
DTRK NO
ISDN YES
MODE ISLD
...
FALT YES
Feature operation
The following is a summary of the tasks in this section:
1 LD 16 – Configure ISL on Analog Trunks.2
Description
Add, or change.
Route data block.
Digital trunk route.
ISDN Primary Rate Interface option.
Mode of D-channel controlling the route.
Enables the error handling and recognition of E lead error
for ISL E&M Tie Trunks.
If FALT= NO, then no error handling with occur.
Overlay Changes
The enabling/disabling commands in the maintenance overlay is changed so
that if the trunk unit is in error state the following occurs:
• The trunk unit cannot be enabled until the external error condition is
removed. The message TRK533 is printed to warn the user that the
enable command is cancelled because an error exists on the ISL E&M
TIE Trunks. When this occurs, the trunk unit will remain in maintenance
busy mode.
International ISDN PRI Feature description and administration
Page 633 of 1814