Calls to a specific DN have too low volume (UC520)

[jordisuste]

Hi,

I am experiencing a strange problem. I have a  UC520 (Cisco UC520-16U-2BRI-K9 (MPC8358), 12.4(22)T with several dn and ephone-dn configured on it. Everything works properly except 2 lines, which have too low volume. It is strange because other lines in the same phone work properly.

Those are the DN involved:

!
ephone-dn  100  dual-line
number 13 no-reg primary
pickup-group 2345
call-forward busy 51
call-forward night-service 56
call-forward noan 51 timeout 10
huntstop channel
night-service bell
no forward local-calls
!
!
ephone-dn  101  dual-line
number 11 no-reg primary
pickup-group 2345
preference 1
call-forward busy 50
call-forward night-service 56
call-forward noan 50 timeout 10
huntstop channel
night-service bell
no forward local-calls
!

Any idea why and how to solve that?

Thanks.

[Felipe Garrido]

Are the calls to those two DNs made from another IP phone or do they come in via the PSTN. If the latter, what type of PSTN connection does the router use? Can you provide us with the entire running configuration?

-Felipe

[jordisuste]

Hi,

The problem is with calls from outside.

They are usign few BRI.

!
interface BRI0/1/0
no ip address
isdn switch-type basic-net3
isdn timer T310 400000
isdn overlap-receiving T302 4000
isdn network-failure-cause 17
isdn point-to-point-setup
isdn incoming-voice voice
isdn sending-complete
isdn static-tei 0
trunk-group ALL-BRI
end

!
interface BRI0/1/1
no ip address
isdn switch-type basic-net3
isdn timer T310 400000
isdn overlap-receiving T302 4000
isdn network-failure-cause 17
isdn point-to-point-setup
isdn incoming-voice voice
isdn sending-complete
isdn static-tei 0
trunk-group ALL-BRI
end

UC520-feldhoff#sh run int BRI0/2/0
Building configuration...

Current configuration : 276 bytes
!
interface BRI0/2/0
no ip address
isdn switch-type basic-net3
isdn timer T310 400000
isdn overlap-receiving T302 4000
isdn network-failure-cause 17
isdn point-to-point-setup
isdn incoming-voice voice
isdn sending-complete
isdn static-tei 0
trunk-group ALL-BRI
end

!
interface BRI0/2/1
no ip address
isdn switch-type basic-net3
isdn timer T310 400000
isdn overlap-receiving T302 4000
isdn network-failure-cause 17
isdn point-to-point-setup
isdn incoming-voice voice
isdn sending-complete
isdn static-tei 0
trunk-group ALL-BRI
end

Attached the config.

Thanks!

[Felipe Garrido]

Can you collect the following debugs for a call with low volume?

debug voip ccapi inout

debug isdn q931

Please note the calling and called party numbers.

best regards,

[jordisuste]

Hi,

There is noone there but I made a call and this is the output.

Thanks!

[jordisuste]

Hi,

New Debug. Info:

Called number:467777950

Calling Number: 3039735256

I can hear properly but the other end can not.

[Felipe Garrido]

If they call you, from that same IP phone to that number out on the PSTN, do they still have the same low volume?

-Felipe

[jordisuste]

Hi,

The problem is only when someone calls. When they call from those DN (12 and 13) everything is ok.

I got a new capture for DN 12.

Thanks!

[jordisuste]

Hi,

What I wanted to mean is that the ephone-dn 25 and 38 (called number 12 and 13) have the problem.

Cheers!