Question : Asterisk voicemail

I setup an asterisk server to play with and i installed Xten eyebeam on two computers. I have managed to setup 2 sip accounts and the voicemail feature successfull and can retrieve mail fine. I just got a Grandstream Budge Tone-100 ip phone to add to the test bed. Sip up one of the original accounts on the ph and can make calls fine. However when i try the voicemail im always told login incorrect. any ideas

Answer : Asterisk voicemail

Check DTMF detection method.

1. Inband - The device that you press the key on will generate the DTMF tones. - If the codec is not ulaw or alaw then the DTMF tones will be distorted by the audio compression and will not be recognised. If the phone is set for RFC2833 and asterisk is set for inband then you may not hear anything.

2. rfc2833: http://www.ietf.org/rfc/rfc2833.txt
3. info: See SIP method info and SIP info DTMF or http://www.ietf.org/rfc/rfc2976.txt
4. auto: Asterisk will use rfc2833 for DTMF relay by default but will switch to inband DTMF tones if the remote side does not indicate support of rfc2833 in SDP

For more info see http://www.voip-info.org/wiki/index.php?page=Asterisk+sip+dtmfmode