GAI-Tronics MRTI 2000 (No. PL1877A) Microprocessor Radio Telephone Interconnect Installation & Service Manual - Manual (Page 70)

Operator Instructions PL1877A Microprocessor Radio Telephone Interconnect
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Press the * button on your encoder. After a short delay, you should hear the dial tone for a duration of
about 2 seconds. When it drops out, enter the telephone number.
You should follow the telephone number with another *. This second * tells the patch that you are
finished with telephone line signaling. If you omit this, the patch assumes that you are finished 1 to 10
(programmable) seconds after the last digit has been entered and then opens the voice path to the
telephone line.
When the called party answers, you cannot interrupt and be heard until they have finished speaking.
When they have finished speaking, you may then talk to the telephone line party. In order to allow time
for you to answer, the patch sends an attention-getting ticking sound to the called party that disappears
after your first reply.
When you finish speaking, the called party hears a short beep tone. Make a brief statement informing the
telephone line party not to speak to you until they have heard the go-ahead beep tone. For example,
“When you hear the beep, it is your turn to talk.” At the end of the conversation, press the # button to
release (hang up) the telephone line. The patch confirms release with a series of short beeps.
Network Signaling
When you dial a telephone number that is busy, or make a dialing mistake and get the fast busy signal,
the phone patch determines the repetitive signaling condition and allows you to hear a few seconds of the
telephone network signaling. Then, when the patch interrupts the signaling, you may respond with the #
button to release the telephone line. The patch continues to alternate between two seconds of
transmitting the repetitive signaling and five seconds of awaiting mobile commands until the telephone is
released.
Half Duplex Mode
In this mode, the patch is installed at your radio repeater site. To access the telephone line (connect),
press the * button for about a half second. When dial tone is heard, dial the telephone number,
“stretching” the first digit for about a half second in order to allow the patch to detect your transmitter
signal.
You should follow the telephone number with another *. This second * tells the patch that you are
finished with telephone number signaling. If you omit this, the unit assumes you are finished 1 to 10
(programmable) seconds after the last digit is entered and then opens the voice path to the telephone line.
When the called party answers, you may talk to him in the same manner as you would to your base
station operator or another mobile except that you are able to interrupt the telephone line party but they
cannot interrupt you and be heard.
Each time you finish speaking and release your microphone button, the patch sends a short beep tone to
the telephone party to inform him that you are finished speaking. At the end of the telephone
conversation, press the # button for about a half second to release (hang up) the telephone line. The
patch confirms release with a series of short beeps.