NEC Electra Elite 192, Hardware Manual

Page: 355 / 369

Electra Elite Issue 6
System Hardware Manual 9 - 13
CO/PBX Dialing Problem: Cannot Dial Out on CO
SLT
problem
only?
Check Memory
Block 4-95.
Check CO lines at MDF
with test set to see if
they are DTMF or DP.
DP or
DTMF?
DTMF DP
Line type
program?
Check Memory Block 3-92
Selection to ensure lines are
programmed for DP.
DTMF
DP
DP
DTMF
DP
DP
DTMF
Check CO lines at MDF
with test set to see if
they are DTMF or DP.
Check CO lines at MDF
with test set to see if
they are DTMF or DP.
DP or
DTMF? DP or
DTMF?
Program lines for DTMF.
Program lines for DP.
Program as DP.
Yes
No
Digits Sent?
Monitor Line with test set, and
verify if system is sending digits.
Programmed
for?
1. If lines are DTMF, increase the DTMF
duration in Memory Block 3-15.
2. If lines are DP, choose 10 or 20 pps
option in Memory Block 3-92.
3. Check off-hook CO line current.
1. Reset COI(8)-U1- ETU. If trouble persists,
go to next step.
2. Replace COI(8)-U1- ETU, and test.
3. Perform Second Initialization, and test.
4. Perform First Initialization, and test.
5. Replace CPUB( )-U10 ETU.
No
Yes
C4
DTMF