10-12-2020 06:56 AM
Hello
A client has a uc520 that connects to the pstn via isdn service.
The installation worked without problem for more than 6 years.
The last four days users experience frequent disconnections during their conversations.
When the issue occurs the debug isdn q921 debug isdn q931 and debug isdn error messages are the following:
*Oct 12 16:16:17.353: ISDN BR0/1/0 Q921: User TX -> RRp sapi=0 tei=0 nr=7
*Oct 12 16:16:17.373: ISDN BR0/1/0 Q921: User RX <- RRp sapi=0 tei=0 nr=6
*Oct 12 16:16:17.373: ISDN BR0/1/0 Q921: User TX -> RRf sapi=0 tei=0 nr=7
*Oct 12 16:16:17.461: ISDN BR0/1/0 Q921: User RX <- RRf sapi=0 tei=0 nr=6
*Oct 12 16:16:21.085: ISDN BR0/1/0 Q921: User RX <- IDREM ri=0 ai=0
*Oct 12 16:16:21.085: ISDN BR0/1/0 SERROR: L2_Go: at bailout DLCB is NULL
L2: sapi 63 tei 127 ces 0 ev 0x3
*Oct 12 16:16:21.089: ISDN BR0/1/0 Q931: Ux_DLRelInd: DL_REL_IND received from L2
Is it telco's responsibility or is something wrong with the uc?
Thank you very much.
Solved! Go to Solution.
10-12-2020 07:02 AM
Hi,
See link
You are receiving IDREM from the TELCO
IDREM | The ISDN switch has removed the TEI (ID) from the connection. The router must discard all exiting communication using that TEI. | Check to see if a new TEI is assigned at a later time. If not, contact the telco. |
10-12-2020 07:02 AM
Hi,
See link
You are receiving IDREM from the TELCO
IDREM | The ISDN switch has removed the TEI (ID) from the connection. The router must discard all exiting communication using that TEI. | Check to see if a new TEI is assigned at a later time. If not, contact the telco. |
10-14-2020 12:35 AM
Hello,
i contacted telco to investigate the issue.
Thank you very much.
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