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Electra Elite
Check CO lines at MDF
with test set to see if
they are DTMF or DP.
Check Memory Block 3-92
Selection to ensure lines are
programmed for DP.
Reprogram as DP.
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.
System Hardware Manual
CO/PBX Dialing Problem: Cannot Dial Out on CO
No
DTMF
DP or
DTMF?
DP
DP
DP or DTMF
program?
DTMF
C4
SLT
Yes
problem
only?
DTMF
Check CO lines at MDF
with test set to see if
they are DTMF or DP.
DP or
DTMF?
DP
Reprogram for DTMF.
Monitor Line with test set, and
verify if system is sending digits.
Yes
Digits Sent?
1. Reset COI(8)-U( ) ETU. If trouble persists,
go to next step.
2. Replace COI(8)-U( ) ETU, and test.
3. Perform Second Initialization, and test.
4. Perform First Initialization, and test.
5. Replace B48-U10 KSU.
Check Memory
Block 4-95.
DP
Line type
program?
Check CO lines at MDF
with test set to see if
they are DTMF or DP.
DP
DTMF
DP or
DTMF?
Reprogram lines for DP.
No
Issue 6
DTMF
10 - 13
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