Outbound calls

Hi,
I have installed asterisk im routing calls to avaya then avaya to our ISP i cant make outbound calls i called avaya they told me this.

If the Asterisk side can be changed to eliminate the requirement for the unrestricted bearer capability

Here is the call log

Failure from our last test call that was made:
39563 15:01:40.470 62 00003b17 <-- SETUP crv 0_2bb2 <<!
D-channel port number: 00003b17
Protocol Discriminator: 08 call control
Call Reference Value: 02 2b b2 Origination 2bb2
Q.931 Message Type: 05 Setup
<- BEARER CAPABILITY unrestr’d, (packet-mode), <<unrecog layer 1 protocol>>
| coding standard: CCITT
| transfer mode: circuit-mode
| layer 1 indent: layer 1
<- CHANNEL IDENT a1 83 84 B-ch num 4, pref
<- CALLING PARTY NUMBER …

Im using H.323 trunk to avaya is anyway i can eliminate the requirement for the unrestricted bearer capability

Thank You