[cisco-voip] ISDN / in-band call progress conversion

[Paul Gani]

We are running an AS5300 12.3(13) with a T1 PRI to a voice switch, sending 
VoIP calls to another AS5300 gateway connected to an E1/R2.

The problem we are having is false call progress/answer supervision. 
Every number dialed, whether valid or not, shows as a normal completed 
call.  See the following example of a "debug isdn q931":

May 16 17:48:11 EDT: ISDN Se0:23 Q931: RX <- SETUP pd = 8  callref = 0x0177
         Bearer Capability i = 0x8090A2
                 Standard = CCITT
                 Transfer Capability = Speech
                 Transfer Mode = Circuit
                 Transfer Rate = 64 kbit/s
         Channel ID i = 0xA98382
                 Exclusive, Channel 2
         Calling Party Number i = 0x2080, '301xxxxxxx'
                 Plan:Unknown, Type:National
         Called Party Number i = 0xC0, '01125420987654321'
                 Plan:Unknown, Type:Subscriber(local)
May 16 17:48:11 EDT: ISDN Se0:23 Q931: TX -> CALL_PROC pd = 8  callref = 0x8177
         Channel ID i = 0xA98382
                 Exclusive, Channel 2
May 16 17:48:13 EDT: ISDN Se0:23 Q931: TX -> ALERTING pd = 8  callref = 0x8177
         Progress Ind i = 0x8188 - In-band info or appropriate now available
May 16 17:48:57 EDT: ISDN Se0:23 Q931: TX -> DISCONNECT pd = 8  callref = 0x8176
         Cause i = 0x8090 - Normal call clearing
May 16 17:48:57 EDT: ISDN Se0:23 Q931: RX <- RELEASE pd = 8  callref = 0x0176
May 16 17:48:57 EDT: ISDN Se0:23 Q931: TX -> RELEASE_COMP pd = 8  callref = 0x81

When we call the above invalid number, we should get a phone company 
recording and/or an ISDN disconnect cause code indicating as such. 
However, since the remote gateway is not ISDN, the call progress is sent 
In-band, and although our local Cisco apparently sees that In-band 
information is available, it doesn't read that information and convert it 
to ISDN.

Is In-band -> ISDN call progress conversion possible on an AS5300?  If so, 
can someone direct me to the proper commands?

Thanks,
Paul Gani