hi

i dont know if the router is disconnecting calls. output of debug q931 ıs below.

Also another thing happens.

scenario like that.

-some1 from pstn calls the operator and wanna talk with a person

- operator holds the calling one by pressing transfer button an operator calls the person if s/he is available

- if the person is not available the operator resumes the call

- at that time ip phone screen still show connected and time still goes on counting , there is no audio between operator and calling person

- no audio and calling person closes the phone

- caliing person calls again ans says to the operator 'i couldnt hear you'

debug isn q931 for droped calls

Mar 12 12:55:24.724: ISDN Se0/0/0:15 Q931: RX <- DISCONNECT pd = 8 callref = 0x1702

Cause i = 0x829F - Normal, unspecified

Mar 12 12:55:24.728: %ISDN-6-DISCONNECT: Interface Serial0/0/0:2 disconnected from 05325414916 , call lasted 117 seconds

Mar 12 12:55:24.728: ISDN Se0/0/0:15 Q931: TX -> RELEASE pd = 8 callref = 0x9702

Mar 12 12:55:24.736: %VOIPAAA-5-VOIP_CALL_HISTORY: CallLegType 1, ConnectionId 7FE383BC CFCF11DB A2930019 55A6CDD8, SetupTime 12:53:24.846 UTC Mon Mar 12 2007, PeerAddress 5722, PeerSubAddress , DisconnectCause 1F , DisconnectText normal, unspecified (31), ConnectTime 12:53:27.426 UTC Mon Mar 12 2007, DisconnectTime 12:55:24.736 UTC Mon Mar 12 2007, CallOrigin 1, ChargedUnits 0, InfoType 2, TransmitPackets 0, TransmitBytes 0, ReceivePackets 5773, ReceiveBytes 923680

Mar 12 12:55:24.776: ISDN Se0/0/0:15 Q931: RX <- RELEASE_COMP pd = 8 callref = 0x1702

Mar 12 12:55:24.780: %VOIPAAA-5-VOIP_CALL_HISTORY: CallLegType 1, ConnectionId 7FE383BC CFCF11DB A2930019 55A6CDD8, SetupTime 12:53:24.840 UTC Mon Mar 12 2007, PeerAddress 05325414916, PeerSubAddress , DisconnectCause 1F , DisconnectText normal, unspecified (31), ConnectTime 12:53:27.440 UTC Mon Mar 12 2007, DisconnectTime 12:55:24.740 UTC Mon Mar 12 2007, CallOrigin 2, ChargedUnits 0, InfoType 2, TransmitPackets 5773, TransmitBytes 969864, ReceivePackets 5864, ReceiveBytes 938240

tr#

The call is disconnected from the network. You should ask to the person that was talking if dropped suddenly or there was a loss of audio before.

Now for the failed retake, does it happens all the time ?

Which IOS are you running and which firmware on the phone ?

how did you understand the call is disconnected from network?

it doesnt happen all time but it happens too often.

c2800nm-spservicesk9-mz.124-12.bin

phone load 7.2(2.0)

thanks for your help

Because the disconnect is received:

RX <- DISCONNECT

Would you try to upgrade at very least the operator phone, to latest 8.0(5) or 8.2(2)SR1, depending on the phone model.

If that doesn't help, you may need to upgrade the IOS as well.

Post the entire isdn q931 debug in order to see if calls have CONNECT and CONNECT ACK after the ALERTING.

fdf, I guess he had CONNECT and CONNECT ACK, as call lasted 117 seconds and they were talking.

hi

i don have connection to the customer and at that moment i can not support you full debug isdn q931 output. But i tested it and it disconnects while u was talking.

or sometimes i call a pstn numbers it starts ringing and then disconnect before the called person answer the call.

thanks again

Are you using 7940-60 ?

if so I suggest you upgrade FW to 7.2(4)

I had tried 8.0(5) but has a bug in which called numbers don't display on local directory.

Also check again show controller E1, you said there are no errors but please check if ANY slip is counted.