[Asterisk-Users] TDM400P callwaiting, threewaycalling and cancallforward problem

[Henry Devito]

>When I'm using my telephone connected to the FXO I can see/hear on my 
>handset that call waiting is enabled, however when I attempt to send a hook

>flash or use the combination "*0" I don't get a dialtone and the feature 
>doesn't work. The same goes for three way calling and cancallforward.

Are you sure you are doing the right sequence of buttons.  If you have a
call coming in you must flash then * 0.  the flash button flashes the PBX
and * 0 flashes the CO.