asterisk users - Mar 2006 - T38 Passthrough testing -- unknown media type error

We are testing the new T38 passthrough code (SVN-oej-t38passthrough-r13347):

- we are using a Sipura SPA-2100 as the T.38 user device
- we are using a Patton SmartNode 2400 as the T.38/PRI gateway
- we are using Asterisk in the middle

We have the following in the [general] section of our sip.conf:

t38pt_udptl = yes
t38pt_rtp = yes       

When a fax call comes in from the SmartNode to Asterisk and is then 
bridged to the SPA-2100 we see the following messages:

Native bridging SIP/sn2400a-0952 and SIP/6046285076-cabc
WARNING[562]: chan_sip.c:10290 handle_response_invite: Strange... The 
other side of the bridge don't have udptl struct
WARNING[562]: chan_sip.c:10290 handle_response_invite: Strange... The 
other side of the bridge don't have udptl struct
WARNING[562]: chan_sip.c:3884 process_sdp: Unknown SDP media type in 
offer: image 16412 udptl t38

Any suggestions as to what is going wrong here (the call progresses in 
G711 mode successfully because the link to this SPA-2100 is over a high 
quality network that has little jitter but I have situations where G711 
doesn't work and I need T.38 support)?

Any thoughts?

-- 
George Pajari, netVOICE communications    604 484 VOIP (484 8647 x102)
Open Source VoIP/Telephony Specialists  1 877 NET VOIP (638 8647 x102)
                  www.netvoice.ca  www.ip-centrex.ca
      www.digium.ca www.grandstream.ca www.sipura.ca www.snom.ca