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ISDN BRI couldn't make outgoing calls

Cisco2811 can receive incoming calls but can't make outgoing calls.log shows msgs below:

*Oct 9 06:11:46.951: ISDN BR0/0/0 **ERROR**: handle_l2d_srq_mail: Layer 1 inactive

*Oct 9 06:12:21.275: ISDN BR0/0/0 **ERROR**: handle_l2d_srq_mail: Layer 1 inactive

*Oct 9 06:13:47.119: ISDN BR0/0/0 **ERROR**: handle_l2d_srq_mail: Layer 1 inactive

*Oct 9 06:13:51.119: ISDN BR0/0/0 **ERROR**: handle_l2d_srq_mail: Layer 1 inactive

*Oct 9 06:13:55.119: %ISDN-6-LAYER2DOWN: Layer 2 for Interface BR0/0/0, TEI 0 changed to down

*Oct 9 06:13:55.119: ISDN BR0/0/0 Q931: Ux_DLRelInd: DL_REL_IND received from L2

*Oct 9 06:14:11.343: %ISDN-6-LAYER2UP: Layer 2 for Interface BR0/0/0, TEI 0 changed to up

*Oct 9 06:16:13.451: ISDN BR0/0/0 **ERROR**: handle_l2d_srq_mail: Layer 1 inactive

*Oct 9 06:16:27.559: ISDN BR0/0/0 **ERROR**: handle_l2d_srq_mail: Layer 1 inactive

*Oct 9 06:16:28.559: ISDN BR0/0/0 **ERROR**: handle_l2d_srq_mail: Layer 1 inactive

Any thoughts?

3 REPLIES

Re: ISDN BRI couldn't make outgoing calls

Hi Tony

As per the logs it shows the physical layer itself is not up at present.

have you checked up the status of the line using show isdn status ?

also did you try to check the voltage on the isdn line ?

regds

New Member

Re: ISDN BRI couldn't make outgoing calls

my dear friend

thank you very much for your explanation.I am working with the telco to troubleshoot the ISDN issue.

much appreciated

Tony

New Member

Re: ISDN BRI couldn't make outgoing calls

put sh isdn status and see layer 1 active or deactivted..then when its up ..still does not work send in the q931 debug output

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