Troubleshooting guide

Trunking
119
Embedded BRI
Embedded BRI calls
fail and all Status LEDs
on the Quad BRI
Framer are OFF.
Configuration. Verify embedded BRI is programmed properly in
the following forms (see also Program Embedded
BRI in the online Help):
• Controller Module Configuration
• Quad BRI Framer Configuration
• Link Descriptor Assignment
• Digital Link Assignment
• Protocol Assignment
After the Digital Links form is completed, the red
Quad BRI Framer status LED should come on.
This takes about 15 seconds.
Embedded BRI Links
are “not seizable”,
Status LEDs show
RED alarm.
Configuration or wiring. Ensure that the ISDN cable is plugged into the
correct RJ-45 port on the Quad BRI MMC. Verify
that the ISDN cable is correctly wired (straight
through for trunk interface, crossover for
terminal). Note that 3-4 and 5-6 are the relevant
pins for the cable.
Toggle the “Bus Type” setting in the Protocol
Assignment (either S or T). This change takes
about 30 seconds to take effect.
Ensure that the Manual TEI value is correct (if
required).
High number of slips. Configuration of Network
Synchronization form.
Ensure that the synchronization source being
selected is not connected to a BRI terminal.
If there is a digital E1 trunk, that should be used
as the first synchronization choice.
Outgoing calls fail with
reorder tone.
Configuration of ARS or
configuration of Per Call
Capabilities.
Enter the CCS TRACE maintenance command to
ensure that the proper digits are being sent out.
Check the Digit Modification with the Per-Call
programming for BRI to make sure digits are not
being inserted or absorbed unnecessarily.
Incoming calls fail. Configuration of Trunk forms. Verify in the Trunk Attributes form that there is an
Answer Point set up for non-DDI trunks for Day
and Night services.
For dial-in trunks, verify that the “Dial-in Trunks
Incoming Digit Modification - Absorb” field is not
left blank and that the “Dial In Trunks - Incoming
Digit Modification - Insert” field is set appropriately
for dial-in trunks.
R2 Line Signaling
R2 setup issue Programming or installation Refer to Mitel Knowledge Base article
05-5191-00050.
Table 34: Digital Trunk Troubleshooting
Symptom Probable Cause Corrective Action
Page 6 of 6