(usr-tc) cisco 804 to total-control hiperarc

I have a customer attempting to dial up with an isdn cisco 804 unit, to a total control hiperarc (quad modems). The connection is established and I see the authentication show up in the radius server log, but then the connection gets dropped. The user and pass is accepted ok. I monitored the ppp call events on the hiperarc, and as the call comes in it says almost instantly that the Peer does not have any IP protocol set, so DISABLING. Any idea why that might be? - To unsubscribe to usr-tc, send an email to "majordomo@xmission.com" with "unsubscribe usr-tc" in the body of the message. For information on digests or retrieving files and old messages send "help" to the same address. Do not use quotes in your message.