Programming instructions

192
3300 ICP Technician’s Handbook
Distorted voice
or loud noise
over PRI/QSIG
call
Voice Encoding
is not set
properly
In the Link Descriptor Assignment for the
PRI/QSIG trunk, set the “Voice Encoding”
to Nil for T1 on NA or E1 on Euro
controller.
Note: You cannot use the same Voice
Encoding settings as a PRI NSU.
High number of
slips
Configuration of
Network
Synchronization
form
Ensure that the synchronization source
being selected is to a digital PSTN trunk
(like PRI or T1/D4)
Outgoing calls
fail with reorder
tone
Configuration of
ARS or Protocol
Assignment
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 PRI to make
sure digits are not being inserted or
absorbed unnecessarily.
Ensure that the “Protocol” field in the
Protocol Assignment form is correct for the
PSTN link (not for DPNSS).
Incoming calls
fail
Configuration of
Trunk forms
Verify in the Trunk Service Assignment
form that there is an Answer Point set up
for non-DID trunks for Day and Night
services. For dial-in trunks, verify that the
“Dial in Trunks Incoming Digit Modification
- Absorb” field is set to 0 and that the “Dial
In Trunks - Incoming Digit Modification -
Insert” field is set appropriately for dial in
trunks.
Table 16: Embedded PRI Troubleshooting (continued)
Symptoms
Probable
Cause
Corrective Action
(Page 2 of 2)