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Community Member

ISDN 0x829A - Non-selected user clearing

Hi all,

Suddenly our incomming ISDN calls stopped to work. In the caller side I can hear a long ringtone and after a while I receive a busy signal; on the called side nothing happens(no ringing)

I attached the debug output (q921,q931) can anyoane help me with an idea what is happening?

As I saw the voice gateway is disconnected by the telco, I looked after the cause code 0x829A but it's not realy clear for me the meaning of the: The destination is able to accept the call. However, the destination rejects the call because the call is not assigned to a user.

Thanks,

Oszkar

8 REPLIES
Hall of Fame Super Gold

Re: ISDN 0x829A - Non-selected user clearing

Hi, can you configure "isdn tei-negotiation preserve" then reboot the router ?

0x829A is not an error in itself, it's just a message used to tell to all devices on the S/T bus that one call has ended, your router recieves because there is some mess going on with TEIs.

Community Member

Re: ISDN 0x829A - Non-selected user clearing

Hi,

I added and rebooted but the situation is the same.

Here is the current bri config:

interface BRI0/3/1

no ip address

isdn switch-type basic-net3

isdn overlap-receiving

isdn tei-negotiation first-call

isdn tei-negotiation preserve

isdn point-to-point-setup

isdn incoming-voice voice

isdn sending-complete

end

Regards,

Oszkar

Hall of Fame Super Gold

Re: ISDN 0x829A - Non-selected user clearing

Can you remove 'isdn tei-negotiation first-call' and try again, take another trace ? In your previous trace, the calling number is given twice, very strange.

Community Member

Re: ISDN 0x829A - Non-selected user clearing

Hi Paolo

Here is the current config and the debug output is attached.

interface BRI0/3/1

no ip address

isdn switch-type basic-net3

isdn overlap-receiving

isdn tei-negotiation preserve

isdn point-to-point-setup

isdn incoming-voice voice

isdn sending-complete

end

Re: ISDN 0x829A - Non-selected user clearing

What is on the other side of the BRI?

The description for this disconnect cause they're sending is this:

The destination is capable of accepting the call but rejected the call

because it was not assigned to the user.

Sounds like a configuration issue on the other side of the BRI.

-nick

Community Member

Re: ISDN 0x829A - Non-selected user clearing

On the other side is the Telco...

Hall of Fame Super Gold

Re: ISDN 0x829A - Non-selected user clearing

I cannot make much sense of this.

I only see a normal disconnect, but:

- switch tries to talk to multiple TEIs that should not be there.

- calling number is duplicated, never seen that happen.

I suggest you disconnect the NT phisically from the pair and leave it as that for 5 mins, if that's not enough please log a fault with telco.

Community Member

Re: ISDN 0x829A - Non-selected user clearing

I disconnected the NT and tested again after 10 min but the situation it's the same.

I will contact the telco..

Thanks for the effort!

Oszkar

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