Sdp media type invalid error

Using an Adit 3104 and trying to get one of the lines to work as a fax line. I can’t fax to or from the line on the 3104. I hear the initial handshake then nothing. Fax shows error 43 and Asterisk console shows the following error:

Oct 27 10:21:28 WARNING[10784]: chan_sip.c:3592 process_sdp: Unknown SDP media type in offer: image 6072 udptl t38

sip.conf:

[2144461103]
context=LAB
type=friend
callerid=“fax 1” <2144461103>
username=2144461103
secret=2144461103
dtmfmode=rfc2833
host=dynamic
canreinvite=no
qualify=yes

extensions.conf:

exten => 2144461103,1,Macro(stdext,${EXTEN},${G-LAB-FAX1})
exten => 2144461103,2,Hangup()
exten => 1103,1,GoTo(LAB,2144461103,1)

numbers.conf:

exten => _2144461103,1,GoTo(LAB,${EXTEN},1)

globals.conf:

G-LAB-FAX1=SIP/2144461103

Adit 3104 Line config:

Codec pref1: G711u (pref2 same and pref 3 G729u)
Silence suppression: enabled
Echo cancellation: disabled
jitter buffer: static
protocol: loopstart
fax mode: none
modem mode: none

Help is appreciated. JMG