topic I don't know the answer. I in Unified Communications Infrastructure

NO DSP problem

nima_sa — Tue, 19 Mar 2019 19:21:59 GMT

Hi everyone

i've been struggling with a cisco 2811 router and fxo lines which is very strange i think . every 1 week , 2 FXO ports of voice gateway become off-hook until i administratively shutdown and the no shutdown the ports . i dont know what is a exact problem ..the output of ports configuration and command are shown below...also i attach the screenshot the problem .

voice-port 0/0/1

translation-profile incoming PSTN-I
translation-profile outgoing PSTN-O
supervisory disconnect dualtone mid-call
supervisory dualtone-detect-params 1
echo-cancel coverage 24
echo-cancel mode 2
no vad
no comfort-noise
cptone IE
timeouts call-disconnect 3
timeouts wait-release 5
connection plar 219
impedance complex2
description 26450120
caller-id enable

----------------------------------------------------------------------------------------------------

voice-port 0/1/0

translation-profile incoming PSTN-I
translation-profile outgoing PSTN-O
supervisory disconnect dualtone mid-call
supervisory dualtone-detect-params 1
echo-cancel coverage 24
echo-cancel mode 2
no vad
no comfort-noise
cptone IE
timeouts call-disconnect 3
timeouts wait-release 5
connection plar opx 200
impedance complex2
description 22828955
caller-id enable

-----------------------------------------------------------------------------------------------------------------------

thanks in advance 🙂

I don't know the answer. I

Philip D'Ath — Sat, 22 Apr 2017 20:26:45 GMT

I don't know the answer. I am suspicious of a software issue since it seems to work fine for a week and then the issue happens. If it was me I would start by upgrading the IOS to a gold star release such as 15.1.4M12a.

https://software.cisco.com/download/release.html?mdfid=279120799&catid=268437899&softwareid=280805680&release=15.1.4M12a&relind=AVAILABLE&rellifecycle=MD&reltype=latest

thank you philip for your

nima_sa — Sun, 23 Apr 2017 05:11:17 GMT

thank you philip for your response;

i think i should upgrade it first ..but i dont know how can i deal with licensing part ....so you think my configuration is not a problem ? do you think maybe PVDM causes the problem ??

I don't know. I would try a

Philip D'Ath — Sun, 23 Apr 2017 05:59:57 GMT

I don't know. I would try a software upgrade first.

Can you try the below:

Alok Jaiswal — Sun, 23 Apr 2017 10:02:21 GMT

Can you try the below:

under the voice-port try to add

No batter-reversal

if that doesn't fix it, try to

voice-card 0
no local-bypass

Regards,

Alok

thank you Alok

nima_sa — Wed, 26 Apr 2017 06:52:43 GMT

thank you Alok

i am going to issue these commands and i will inform you about the result . but could you please tell me about the second command ? (Voice-card )

is this command working on FXO cards ??

Thanks

Dear Alok

nima_sa — Mon, 15 May 2017 06:20:18 GMT

Dear Alok

i've not had this problem anymore after these command you told me ...i think the issue is resolved. thank you so much