Clearing Trunk Faults - Nortel 1000E Maintenance Manual

100 Clearing faults

Clearing trunk faults

This section deals with trunk faults on either the MG 1000E or MG 1000T.
Trunk circuit cards provide the interface between the system and Central
Office (CO) trunks, or between PBXs. The maintenance telephone can be
used to test trunks. Two types of trunk cards are considered:
•
E&M Trunk: provides four trunk units, each of which can be connected
to a trunk configured to operate as one of the following:
—
—
—
—
•
connected to a trunk configured to operate as one of the following:
—
—
—
—
—
—
—
Trunk faults can cause problems (such as noise) on outside calls and can
keep calls from entering or leaving the system.
Fault clearing procedures using an SDI terminal
See
Table 34
Trunk fault indicators
Indicator
System messages
Visual indicators
Trunk cannot make or receive calls
A user cannot make or receive calls over a trunk. An OVD system
message may be received, indicating that this trunk has been disabled.
Look up all system messages in the Software Input/Output Reference –
System Messages (NN43001-712) and follow the instructions.
E&M signaling trunk
Two-wire Tie trunk
Four-wire Tie trunk
Paging trunk
Universal Trunk: provides eight trunk units, each of which can be
CO trunk
Direct Inward Dialing (DID) trunk
Two-way Tie, Dial Repeating (2DR)
Two-way Tie, Outgoing Automatic Incoming Dial (OAID) trunk
Recorded Announcement (RAN) trunk
Music trunk
Paging trunk
Table 34 "Trunk fault indicators" (page 100)
Possible indications
ERR090, 220, 270 OVD001—010
TRK messages
Red LED lit on trunk circuit card
Nortel Communication Server 1000
Communication Server 1000E Maintenance
NN43041-700 02.07 22 December 2009
Copyright © 2004-2009 Nortel Networks. All Rights Reserved.
for trunk fault indicators.