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Problems with ISDN PRI DDR connections

We have 2 C3600 connected via 2 MB leased Line to one central 3600. In case of a break of the leased lines, the both remote routers should dial 15 b-channels but the don't. One dialed 10 connections, the other one only 13 channels and both tell me in a debug dialer, that all 15 channels are established, but the aren't. Is this a bug in 12.2(10a) (maybe CSCdv53824 ) or is there something I forgot to configure?

  • Other Network Infrastructure Subjects
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Re: Problems with ISDN PRI DDR connections

1)Can you try with "isdn fast-rollover-delay 5" configured under the serialx:23 on both the calling remote routers.

2)Do we always see the same pattern of 10 & 13 (remote-1 & remote-2)...what if we only have any one of them dial into central router (shut the PRI on the other remote router)?

3)Do we see any errors/ messages when they attempt the 11th on remote-1 or 14th call remote-2?

4)What does "show isdn active" show on all these 3 routers in the final state?

Can you please send debug outputs:

debug dialer / deb isdn q931 / sh isdn active + sh ver / sh run (only relevant) on all three.

Thanks, Mak.

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