AT&T AT&T manual TOUCH-TONE and Dial Pulse Services, Touch-Tone Dial Pads, Touch Dial Pads, 244

TOUCH-TONE AND DIAL PULSE SERVICES

D e s c r i p t i o n

All single-line voice terminals and MET sets are equipped with touch-tone dial pads that generate Dual Tone Multifrequency (DTMF) signals when a dial button is pressed. The 7300H series (MERLIN) voice terminals are equipped with touch dial pads that generate digitally coded signals when a dial button is pressed.

Each pool of outside lines and each Personal Line maybe independently arranged for either touch-tone or dial pulse service.

Touch-Tone Dial Pads

On outgoing calls on trunks requiring touch-tone signals, cut-through-dialing is provided. Where the trunk requires dial pulse signals, conversion of the touch-tone signals to dial pulses is provided until an end of dialing signal is detected. Cut-through is then provided, and all subsequent digits are sent as touch-tone signals. See the “End-to-End Signaling” subsection for more information.

Touch Dial Pads

On outgoing calls on trunks requiring touch-tone signals, all dialed digits are converted to touch-tone signals. Where the trunk requires dial pulse signals, the dialed digits are converted to dial pulses until an end of dialing signal is detected. Cut-through is then provided, and all subsequent digits are converted to touch-tone signals. See the ’’End-to-End Signaling’’ subsection for more information.

C o n s i d e r a t i o ns

None

I n t e r a c t i o ns

None

Administration Requirements

Trunk Port:

●Assign trunk Class Of Service (COS). (COS includes touch-tone/dial pulse specification.)

Hardware Requirements

None

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