Gurus,\n\nWhen I dial into a phone conference, my meeting number (something like \n123456#) is not recognised. The reply is something like 'the\nconference 112334566 is invalid' (like if I typed some keys twice).\n\nI do not have any issues with the voipfone voicemail, but there is only \n1 digit to access the submenu...\n\nDTMF is set to SIP INFO, and this configuration seems to work for\nothers. Voipfone tech support suggests to use RFC2833. This setting does \nnot work at all. I have tried various settings for DTMF and there are \nwhat I can see:\n- SIP INFO works on voipfone voicemail, but not on conference call kind \nof systems. When I call myself, I can distinctly hear 2 tones send over \nthe line.\n- Inbound works on conference kind of system, but not on voipfone voicemail.\n\nI have tried this with 2 phones:\n- An ASCOM DECT phone\n- A traditional corded phone (no brand I can remember, might be BT).\n\nOther people reckon they have success using SIP INFO.\n\nI am running out of ideas.... Draytek is running its lastest and \ngreatest firmware. Voipfone seems to work for quite a lot of people....\n\nIdeas Anyone?\n\nThanks!