Section 3. Operation
3-2
Pressing the CONNECT button on the front panel while the Model 30 is on-hook
causes it to go off-hook and enter into the conversation mode.
Mobile-to-Phone Calls
To place a call, a mobile enters the DTMF ACCESS CODE (sign-on sequence)
and unkeys. The ACCESS CODE must be entered without unkeying between
digits or waiting more than 1 second between successive digits. The Model 30
will take the phone off-hook and send dial tone (phone audio) to the transmitter.
For simplex installations, the transmitter will be keyed for 2 seconds, then unkey
to receive mobile dialing digits. The Model 30 will regenerate the mobile DTMF
to the phone, or provide conversion from DTMF to pulse dialing until there is a
5-second gap in the entered digits. The MOBILE ACTIVITY and CALL LIMIT
timers are started as soon as the telephone is taken off-hook. During dialing, if
the mobile’s first digit matches a digit in the first digit-restricted string, the
Model 30 will terminate the call. The same applies for the second digit restrict
string and the second digit dialed.
If Mobile-to-Mobile calling is enabled in the Model 30, the radio user must enter
a steering digit along with the ACCESS CODE. Adding a “9” to the ACCESS
CODE sets up a Mobile-to-Phone call. The Model 30 will respond by prompting
for the phone number as usual.
Mobile-to-Mobile Calls
When Mobile-to-Mobile paging is enabled, radio users connecting to the Model
30 Selcall enter a steering digit after the Connect Code. This steering digit
specifies whether the user wants access to the phone line or to page another
mobile. Entering a “7” requests Mobile-to-Mobile paging. This is followed by a
page-type digit (if required) and the capcode. Mobile-to-Mobile paging is
available even in simplex systems.
Once a Call is in Progress
Once a call has been connected, the call may be terminated in one of seven ways:
1. Disconnect Code - A mobile may disconnect the call by sending the
disconnect code. The call is terminated immediately and 5 fast beeps are
sent to the mobile indicating the call is over. Once the disconnect code
sequence has been started, each additional digit must be sent within
1 second of the last, without dropping carrier between digits. If the user
unkeys between disconnect code digits, the sign-off attempt is ignored.
2. Busy Disconnect - If a busy tone is detected by the Model 30 during the first
20 seconds of a mobile originated call, the Model 30 will disconnect and
send 5 fast beeps to the transmitter. The busy disconnect feature may be
disabled by the installer, or enabled for the entire length of the call.
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