Ericsson M-PA LBI-38377E, Operator'S Manual, Page: 22 / 36

TELEPHONE INTERCONNECT CALLS
SYSTEM MODELS
Telephone interconnect calls can be placed on
radio channels equipped with this capability. Each
channel programmed into the radio can be pro-
grammed for telephone interconnect by enabling it for
DTMF dial operation. One (1) of the ten (10) pro-
grammed telephone numbers can be selected and
automatically dialled.
Communication takes place in a simplex mode.
In other words, the PTT BUTTON must be pressed
each time you wish to transmit and it must be re-
leased to receive.
The keypad on the radio’s front panel allows the
operator to make telephone interconnect calls on
radio systems equipped with this capability. Tele-
phone numbers may be manually dialed using the
DTMF numeric keypad, or one (1) of the ten (10)
programmed or stored numbers can be selected and
automatically dialed. Each channel may be pro-
grammed for telephone interconnect by enabling it for
DTMF dial operation.
Most systems require an "
*
" to be sent at the
beginning of a transmission to get a dial tone. Others
require "#". After the dial tone is received, the num-
ber is sent.
Communication takes place in a simplex mode.
In other words, the PTT BUTTON must be pressed
each time you wish to transmit and it must be re-
leased to receive.
At the completion of the call most systems re-
quire a "#" to be sent to disconnect the user from the
telephone system. Others require "
*
".
Placing A Manually Dialed Call
1. If the "SCN" status flag is on, press SCAN
to turn scan off.
2. Select a channel in your radio system that
has telephone interconnect capability. The
radio should be programmed for DTMF op-
eration on this channel.
3. Press and hold the PTT BUTTON to key the
transmitter.
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