[Asterisk-Users] DTMF detection

[John Millican]

Hello all,
yes there is a lot of information about this on the wiki and in past posts on 
this list but have not found anything that has solved my problem.
setup is:
phone-->PAP2-na-->asterisk v1.0.9(in house on local subnet dtmf is 
inband)--->PSTN--->Telisip---->asterisk box at colo v1.0.9 VoIP only.  I have 
only access to dial up so can not go VoIP out of the house.
In extensions.conf  on colo * i have some logic that based on callerid lets me 
hit a single digit to get to DISA, this work every time.
the problem is that when i enter a number for DISA to dial i get duplicate 
digits, example i enter 6037862111 and disa tries to dial 6003778621.  I have 
tried setting relaxdtmf=yes in sip.conf with no luck.  I have read on the 
wiki that RFC2833 should work, but alas its a no go.  I am also using ulaw 
which should not be distorting the dtmf through compresion, correct? Also 
with RFC2833 it should not matter? Everything works great otherwise. sip.conf 
for colo * is posted below:
[general]
context=telasip			
port=5060			
bindaddr=0.0.0.0		
srvlookup=yes			

disallow=all			; First disallow all codecs
allow=ulaw			

register => username:password at gw3.telasip.com

[telasip]
type=peer
username=*****
fromuser=*****
authname=*****
secret=*****
host=gw3.telasip.com
context=default
dtmfmode=RFC2833
disallow=all
allow=ulaw
canreinvite=no
nat=no

Thanks in advance for any help
John Millican