Direct Inward Dialing (DID)

T1 module is required for Direct Inward Dialing (DID).
■ You must use the PARTNER ACS R7.0 PC Administration software to program Direct Inward Dialing (DID) on T1 lines.
■ You can have a call on a T1 line with Direct Inward Dialing (DID) ring at an extension that cannot access a T1 line from a line or pool button. If the line or pool button is not programmed at an extension, or the line or pool button is busy, the call rings at one of the extension’s Intercom buttons.
■ Outgoing calls can be made on T1 lines administered for Direct Inward Dialing (DID).
■ Automatic System Answer features are disabled on T1 lines with Direct Inward Dialing (DID).
■ Direct Extension Dialing features are disabled on T1 lines with Direct Inward Dialing (DID).
■ Caller ID information is unavailable on T1 lines. The message “Direct In Dial” or “DID” is displayed for incoming calls on T1 lines with Direct Inward Dialing (DID).
■ You should not assign T1 lines with Direct Inward Dialing (DID) to Hunt Groups. If a Hunt Group contains T1 lines with Direct Inward Dialing (DID), callers will receive busy signal when all extensions in the Hunt Group are busy (for example, off-hook), have Do Not Disturb activated, or are in programming mode.