Troubleshooting guide

Trunking
121
Outgoing calls links fail with
re-order tone.
Faulty configuration in ARS. Ensure that the proper digits are being sent out –
get a “ccs trace” from the maintenance command
window in ESM.
Also review the routing of the call throughout the
PBX network. Verify that the far end is ready to
properly accept the call.
Incoming calls fail. Faulty configuration of trunk
Forms.
Verify in the Trunk Attributes form that there is an
Answer Point setup for non-DDI trunks for Day and
Night services.
For dial in trunks, the “Dial In Trunks Incoming
Digit Modification – Absorb” is not left blank and
that the “Dial In Trunks Incoming Digit Modification
– Insert” is set appropriately for dial in trunks.
All calls on a DS1 or CEPT
card link fail.
Faulty cable connections,
cable, or card.
Check the status of the link by using the DTSTAT
READ PLID maintenance command.
Check the cabling and cable connections. Test
with a back-to-back cable to prove the DS1 or
CEPT card.
Replace faulty cable or card.
Only some calls on a DS1 or
CEPT card link fail.
Configuration errors in
programming
• ARS programming error
• Digit conflict
• Interconnect Restriction
preventing call
• Far end
fault/programming
Correct programming through System
Administration Tool.
Only calls to the central office
fail.
Faulty programming. Ensure the Class Of Service option of “Public
Network Access via DPNSS” is enabled on the
extension making the call and the for MSDN
trunks.
Cannot Group Page across
MSDN trunks or IP trunks.
If one system has pre- 3300
Release 5.2.4.4 software
and the other system has
post-Release 5.2.4.4, the
remote group page will fail
due to incompatible
signalling.
Upgrade all systems to Release 5.2.4.4 software
or higher.
Table 35: MSDN/DPNSS Link Troubleshooting
Symptom Probable Cause Corrective Action
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