When editing or adding phone numbers, follow the same rules that Conferencing uses to dial phone numbers:
7-digit numbers without area codes are treated as local calls.
10-digit numbers are in the North American dialing region.
Numbers that begin with a + sign have a country code following the + sign (for example, +1 123-123-1234).
An international call is placed if the country code is not the North American region (country code = 1).
Numbers that begin with the international dialing prefix (011) are interpreted without the prefix as if they begin with a + sign (for example, 011 1-123-123-1234 = +1 123-123-1234)
Numbers that contain an x are have an extension after the x (for example, 123-1234 x 123).
Conferencing dials extensions according to these rules:
If the user places a 1-to-1 call, the extension is not dialed. The expectation is that the caller provides the extension when the call is answered.
If the user places a conference call, the system dials the extension after the auto-attendant answers the call. After the dialing the extension, the system waits for the invitee to accept the meeting invitation.
Use the * and the # characters in a number to access auto-attendant functions (for example, 123-1234*123).
Use a comma (,) to have the system pause briefly before dialing the remaining digits. (for example, *89,123-1234)
Conferencing only recognizes the (* # , x X) characters and digits 0-9 and ignores all other characters.