01-08-2009 06:31 AM - edited 03-15-2019 03:23 PM
I had a customer that had an outage and need to find out why. Debugging q921 yields one way SABME. I know what this may indicate, but the error that I cannot decipher is
"ISDN Se0/0/0:23 Q931: Ux_DLRelInd: DL_REL_IND received from L2"
Anyone know what this means???
01-18-2009 07:19 PM
You may try replacing the router and check the connection again.If the problem is not with the router check the PBX connection.
01-18-2009 08:41 PM
Interestingly, I think this was a provider issue, what exactly happened I have no idea. I showed up at the customer site and everything was working. Of caurse, the provider had no idea what went wrong nor what the fix was... Thanks for the response.
11-01-2015 07:51 AM
What does the above q921 message mean?. For that matter what does SABME mean?
Not strong with voice. Let me know, Thanks
11-01-2015 09:50 AM
Hi.
Set Asynchronous Balanced Mode Extended (SABME)
SABME is the first message sent during a Layer 2 connection sequence. Its basic purpose is to reset the link and prepare it for a new connection. SABMEs must be acknowledged by a UA.
HTH
Regards
Carlo
10-10-2019 03:32 PM
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