[Asterisk-Users] Polycom 301 DTMF

[Bill Michaelson]

Just got a Polycom 301 and I'm configuring.  Examples given in wiki 
recommend using dtmfmode=inband, so that's what I set in sip.conf for 
this phone, as I have for various other IP phones on my network.  But 
the telephone does not seem to send DTMF tones up thru the network 
(although I hear them in the handset when I bang the buttons).  Also, I 
can't seem to find a corresponding parameter in the web-based config 
pages of the phone.  Can anyone give me some hints about how best to 
configure this?