Voice over IP Cisco - Re: Troubleshooting ISDN PRI alternating

Author

Re: Troubleshooting ISDN PRI alternating

Robert Kulagowski

2006-11-21, 7:11 pm

Rodrigo Villagran wrote:
> Hi,
> the problem must be that the D Channel is not available (some problem in the
> Telco), if you do the "sh controll E1" and the E1 is UP and without slips,
> then the problem is the D channel (L2 signalling), you could try to change
> from USER to NETWORK in protocol emulation, but the best is call the Telco
> to resolve the problem.

This sure looks like I've hit some sort of IOS bug.

Run the router with 12.4.10a - doesn't work. Never gets out of
TEI_ASSIGNED / AWAITING state.
Run the router with 12.4.4XC5 - works. Can get inbound calls.

Same config, just changing the boot system flash command and reloading.

<sigh>