Use OBi Expert to make the following changes:
Service Providers -> ITSP Profile D -> SIP -> ProxyServer:
example.comVoice Services -> SP4 Service -> AuthUserName: anything
Voice Services -> SP4 Service -> X_RegisterEnable: unchecked
Voice Services -> SP4 Service -> X_ServProvProfile: D
Physical Interfaces -> IP Phone -> Phone Settings -> DigitMap
Add the following AFTER the beginning parenthesis:
@@@@|
Physical Interfaces -> IP Phone -> Phone Settings -> OutboundCallRoute
Add the following to the beginning:
{(@@@@):sp4},
Are you required to use a specific userid? If yes, change "anything" to that name.
Above assumes SP4 is free and the meeting number is always 4 characters.
Just dial ####
You can also dial the IP address, but it's a more complex setup.