[Asterisk-Users] DTMF issues with SIPPhone?

[Jason DiCioccio]

Does anyone else have DTMF issues with SIPPhone?  When calling into my
DID, and entering, say, 1002.  Sometimes it will recognize it properly
(rarely), other times it will receive something different.  Such as,
1102 or 1000, etc.  Has anyone else been having these issues?  I'm
only accepting ulaw and alaw, and my relevant sip.conf information
follows:

[sipphone]
type=peer
host=proxy01.sipphone.com
fromdomain=proxy01.sipphone.com
fromuser=1747xxxxxxx
username=1747xxxxxxx
password=xxxxx
context=fromsipphone
dtmfmode=rfc2833
canreinvite=no


Any ideas?  Am I doing something wrong?

Thanks!
-JD-