FXO lines not getting a dial tone, no circuit available

[JH51928]

I'm getting an issue in fxo lines in the isr. Found in vpm signal log about "fxols_power_denial_detected" on outbound call.

Also, ring detection is shown on show voice port summary on inbound call.

I added the command no battery reversal and no supervisory disconnect, tested the port for voltage, the result is "Register 29 = 0x00" on the command test voice port x/x/x si-reg-read 29 1. I rewired the cables and bypassed all the jacks and just spliced the cables, I reversed the tip and ring, plugged in the rj11 to a different fxo port. I did all this and still not getting any improvement.

Most information I found on the internet about this issue is pointing to the service provider. I've coordinated with the SP but they did not find any issue on their end. 

5 out of 9 sites are working using the same programming I put on the ISR. I don't know where to look anymore, pls help.   

[Nithin Eluvathingal]

I would connect a normal analogue telephone to the PSTN line first and make sure everything working fine.

Can you share your FXO port configuration.

[JH51928]

I'm going to connect an analog phone next time I visit the site.

Below is the voice port config in one of the sites that have this issue

Foreign Exchange Office 0/1/0 Slot is 0, Sub-unit is 1, Port is 0
Type of VoicePort is FXO NIM-2FXO
Operation State is DORMANT
Administrative State is UP
The Last Interface Down Failure Cause is Administrative Shutdown
Description is not set
Noise Regeneration is enabled
Non Linear Processing is enabled
Non Linear Mute is disabled
Non Linear Threshold is -21 dB
Music On Hold Threshold is Set to -38 dBm
In Gain is Set to 0 dB
Out Attenuation is Set to 3 dB
Echo Cancellation is enabled
Echo Cancellation NLP mute is disabled
Echo Cancellation NLP threshold is -21 dB
Echo Cancel Coverage is set to 128 ms
Echo Cancel worst case ERL is set to 6 dB
Playout-delay Mode is set to adaptive
Playout-delay Nominal is set to 60 ms
Playout-delay Maximum is set to 1000 ms
Playout-delay Minimum mode is set to default, value 40 ms
Playout-delay Fax is set to 300 ms
Connection Mode is plar opx
Connection Number is 3251
Initial Time Out is set to 15 s
Interdigit Time Out is set to 10 s
Call Disconnect Time Out is set to 60 s
Power Denial Disconnect Time Out is set to 1000 ms
Ringing Time Out is set to 180 s
Wait Release Time Out is set to 30 s
Companding Type is u-law
Region Tone is set for CA

Analog Info Follows:
Currently processing none
Maintenance Mode Set to None (not in mtc mode)
Number of signaling protocol errors are 0
Impedance is set to 600r Ohm
Station name None, Station number None

Caller ID Info Follows:
Standard BELLCORE
Input attenuation is set to 0.0 dB
Caller ID is received after 1 ring(s)
Translation profile (Incoming):
Translation profile (Outgoing):
lpcor (Incoming):
lpcor (Outgoing):

Voice card specific Info Follows:
Signal Type is loopStart
Battery-Reversal is enabled
Number Of Rings is set to 1
Supervisory Disconnect is signal
Answer Supervision is inactive
Hook Status is On Hook
Ring Detect Status is inactive
Ring Ground Status is inactive
Tip Ground Status is inactive
Dial Out Type is dtmf
Digit Duration Timing is set to 100 ms
InterDigit Duration Timing is set to 100 ms
Pulse Rate Timing is set to 10 pulses/second
InterDigit Pulse Duration Timing is set to 750 ms
Percent Break of Pulse is 60 percent
GuardOut timer is 2000 ms
Minimum ring duration timer is 125 ms
Hookflash-in Timing is set to 600 ms
Hookflash-out Timing is set to 400 ms
Supervisory Disconnect Timing (loopStart only) is set to 350 ms
OPX Ring Wait Timing is set to 6000 ms
Secondary dialtone is disabled

[JH51928 · Accepted solution]

Cable issue.

I rewired the cable from terminal block, then to patch panel, then to ISR.

I checked every end of the cable with my butt set to ensure that I'll hear a dial tone.