[asterisk-users] dtmfmode rfc2833 and info

[Jerry Geis]

I have two asterisk machines setup.
M1 is asterisk 1.4.11 connected with a PRI
M2 is asterisk 1.2.23 connected to M1 over sip.

When M2 calls out through M1 and tries to use SendDTMF() in an agi
I get varied results.

1) In sip.conf if dtmfmode=rfc2833 I do not hear the sendDTMF()
2) In sip.conf if dtmfmode=info I do hear the sendDTMF()

Why is there a difference?

Jerry