require DTMF
The following steps are required to dial these numbers:
1.Follow the procedure in Sending A Telephone In- terconnect Call (Trunked Mode Only) to establish a connection to the telephone system or consult the system administrator for the procedure to access a dial tone on the trunked or conventional system.
2.Overdial numbers are transmitted using either method below:
METHOD 1: Press and hold PTT while entering the overdial number sequence from the key- pad. This method sends DTMF tones dur- ing individual, telephone interconnect, trunked group or conventional channel calls. Anytime the PTT button is pressed and held, the keypad is enabled for DTMF entry.
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