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804 not dropping second B channel to accept incoming voice calls

My problem is that I have an 804 router that dials into an ISP for Internet access. The router is configured to establish a 128K multilink connection immediately and works great. The problem is that I have a fax machine attached to the 804 and I need the router to drop the second B channel when an incoming voice call is detected. I believe that my problem is related to the fact that I am using a dialer interface. I added the commands “isdn incoming voice modem” and the “isdn voice-priority xxxxxxx in always” commands to the BRI0 interface but they cannot be set on the dialer interface. Bottom line is that incoming voice calls receive a busy signal. Previously I had the router configured to dial into a Lucent Portmaster at my office (I was not using a dialer interface)and the router correctly accepted incoming voice calls. Can anyone verify that the problem relates to my use of a dialer interface.

Thanks,

Lonnie

1 REPLY
Bronze

Re: 804 not dropping second B channel to accept incoming voice c

Lonnie,

The isdn commands can only be entered in ISDN interfaces. You could just migrate your configuration from using dialer interface to just using your BRI0 interface.

I believe that the ISDN commands should still work though even though you have dialer interfaces configured.

Daniel

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