Lot of noise on PSTN call (NIM-BRI)

[ayyoubira]

HI, 

I am having an issue with offnet call on ISR 4331.

I can not hear the voice. there's only a lot of noise.

please help me to fix this issue.

attached show version and show run.

thank you in advance 

[Nipun Singh Raghav]

Can you remove "compand-type a-law" command from the BRI voice-ports and then test ?

[ayyoubira]

I have test but problem still persiste 

[Nipun Singh Raghav]

With the command removed, take a PCM capture for a test call. Keep it active for 10 - 15 seconds before hanging up.
https://www.cisco.com/c/en/us/support/docs/voice/h323/116078-technologies-technote-commandrefe.html#anc10

[ayyoubira]

I'm not on the site i take the capture and i comeback to you  

[ayyoubira]

Hi ,

attached the requested PCM capture.

please remove ".txt" from the file extension 

Thank you in advance.

[Nipun Singh Raghav]

Sorry but you need to grab that again. Do not change or add an extension. Send it in a DAT extension itself. It causes issues.

[ayyoubira]

Hi again,

i cant upload files in DAT extension in this forum.

I will grab them again and put a link to download it in DAT extention.

[ayyoubira]

Hi again,

i cant upload files in DAT extension in this forum.

I will grab them again and put a link to download it in DAT extention.

[Nipun Singh Raghav]

Add them to a dropbox or google drive if that works.

[VLT06]

Got the same happening today as well...

what I have found on a NIM-BRI4 is that port 0 & 2 = Loud screech yet port 1 & 3 = total silence (no speech)....

My first time configuring on 4331 as normally configured on 2911. Something not right....

[Nipun Singh Raghav]

Couple of defects for NIM-FXO -

https://bst.cloudapps.cisco.com/bugsearch/bug/CSCut07229

https://bst.cloudapps.cisco.com/bugsearch/bug/CSCut55801

If the DSP firmware needs an upgrade for you, you can upgrade the IOS. If you only want to upgrade the DSP FW and not the IOS, open up a TAC case.

[VLT06]

Sorry, mine was with a NIM-BRI4 (sorry typed incorrect card before).

[VLT06]

Just as FYI - my issue was resolved via an RMA on the card. Apparently a certain batch had issues etc...

Cheers!

[ayyoubira]

I had the same problem, the issue was resolved by changing the NIM card.