Cisco Support Community
cancel
Showing results for 
Search instead for 
Did you mean: 
Announcements

Welcome to Cisco Support Community. We would love to have your feedback.

For an introduction to the new site, click here. And see here for current known issues.

New Member

disconnect cause= 1F means?

hi

i got ccme 2851 router and also i have pri line.

Even the under controller E1 there is no any error , intermittenly the calls drop.

debug isdn q931 output shows Disconnect cause=1F

any idea?

9 REPLIES
Hall of Fame Super Gold

Re: disconnect cause= 1F means?

Hi,

1F is normal, unspecified, see:

http://www.cisco.com/en/US/tech/tk801/tk379/technologies_tech_note09186a008012e95f.shtml

(you need to subtract 0x80 from codes)

Who is is disconnecting the calls, router or switch ?

Please post the complete debug isdn 931 output.

New Member

Re: disconnect cause= 1F means?

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#

Hall of Fame Super Gold

Re: disconnect cause= 1F means?

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 ?

New Member

Re: disconnect cause= 1F means?

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

Hall of Fame Super Gold

Re: disconnect cause= 1F means?

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.

New Member

Re: disconnect cause= 1F means?

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

Hall of Fame Super Gold

Re: disconnect cause= 1F means?

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

New Member

Re: disconnect cause= 1F means?

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

Hall of Fame Super Gold

Re: disconnect cause= 1F means?

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.

871
Views
0
Helpful
9
Replies