Motorola Gm300 Selling Guide Manual

							Accessory Connector2-23
8.3.3 Voice PTT
If Voice PTT is asserted, the TX audio is routed from one of the microphone paths. CPS
programming defines whether the external voice PTT uses the internal or external (pin 2)
microphone audio path.
8.3.4 Data PTT
If data PTT is asserted, it is assumed that the external PTT is an electronic switch (e.g. a modem)
and that it requires the fastest possible radio response. When this pin is asserted the microphone
path is muted and the TX audio is routed from the Flat TX audio input (pin 5).
8.3.5 Voice & Data PTT
If voice and data PTT is asserted, it is assumed that the external PTT is an electronic switch that
requires the fastest possible radio response. The microphone path and the Flat TX audio input are
both enabled and the two signals are summed to form the TX signal. CPS programming defines
whether the external PTT uses the internal or external (pin 2) microphone audio path.
8.3.6 Mute Audio PA
When this input is asserted the audio PA (and speaker) is muted. When it is de-asserted, the audio
PA operates under normal software control and follow programmed squelch requirements.
8.3.7 Open RX Audio
When this input is asserted the received audio, or option board audio (if fitted), is routed through to
the audio PA (and speaker) independent of the normal squelch criteria.
8.3.8 Public Address Enable
When enabled, this feature allows the radio to act as a ‘Public Address’ system. An external switch
is connected to this pin. When this pin is asserted, the radio routes the internal or external mic audio
through to the Rx Audio (pins 7 and 11). A public address kit must be connected to the Rx audio
pins; this provides extra audio amplification and connection to an external speaker (eg mounted on
theroofofthecar).
When the public Address pin is asser ted and the mic PTT is pressed, the radio cannot receive calls.
When the Public Address pin is asserted but the mic PTT is not pressed, the radio can receive calls.
However, the Public Address pin must be de-asserted (ie the external Public Address switch moved
to OFF) before the user can reply to the call.
8.3.9 Call1,Call2,Call3,Call4
If one of call 1, call 2, call 3 or call 4 inputs is asserted, then its associated telegram is transmitted.
It provides the same functionality that is assigned to a call programmed on a button. 
						

							2-24FEATURES AND BENEFITS
8.3.10 Emergency
If an emergency switch is assigned, asserting the input causes the radio to go into emergency 
mode. 
Emergency switch assigned to pin 9 is a special case. In addition to normal emergency mode, 
asserting the input when the radio is turned off will invoke Emergency with Wake Up. This causes
the radio to power up and immediately enter Emergency mode.
8.3.11 Ignition Ignition sense is programmable per radio. Connecting the vehicle ignition to this line causes the
radio to turn on automatically when the ignition is turned on, and turn the radio off when the ignition
is turned off. This feature is particularly useful where the radio must always be on when the vehicle
is in use, for example, a fire engine. 
Benefits

The radio turns on automatically when the vehicle is star ted.
8.4 Data Transmissions
Mobile data systems are increasing in popularity. The GM300 Series mobiles have been designed 
with this is mind. They have:

flat transmit and receive audio available on the accessory connector;

special programmable digital lines on the accessory connector;

the ability to connect an internal or external data modem to the radio.
An external data modem can be connected to the mobile via the rear accessory connector. 
An internal data modem can be fitted neatly inside the DataPro accessory. The mobile’s control 
head is put into the remote mount configuration and then the DataPro is connected to the front of
the transceiver. The audio and digital signals that are normally routed via the rear accessory
connector are taken out via 2 D-type connectors on the front of the box. This gives easy connection
with standard connectors to other external devices, such as computers. 
Motorola has selected Application Partners who have specially designed modems to fit inside the 
GM300 Series mobiles. Several different signalling formats and speeds of modem are available to
meet the many different application requirements. Most have RS232 signalling via the D-type
connectors.
8.5 Accessory Packages
Several common accessories are listed in the Accessory Package.
Choosing one of these automatically sets up the GPIO interface in the required configuration.
Changes of, and additions to, the standard configuration can be made. 
B en efits

Reduces time to set up the radio. 
						

							5 Tone (Select 5) Signalling2-25
9.0 5 Tone (Select 5) Signalling
9.1 Introduction
In 5 tone systems, each radio has a unique numeric identity (e.g. 12345). To signal the number
12345, a sequence of 5 tones is sent. Sequences of audible tones of a very short duration are sent
between radios. Most 5 tone sequences take less than half a second to send.
When the radio receives the correct 5 tone sequence it sounds alert beeps and flashes LEDs to
indicate to the user that they have been called. The squelch opens so that activity on the channel
can be heard, as this is a message specifically directed at them.
Benefits

Easier, faster communications.

Users only receive calls specifically for them.

Alert beeps notify users when a call is received for them.

Radio user does not need to continuously listen to channel - less user fatigue.

Improved system performance.
9.2 Signalling Standards
There are several “standards” for 5 tone signalling, each of which uses different durations and
frequencies to represent the numbers 0 to 9. The GM300 Series supports all major European 5 tone
signalling standards:
100ms CCIR French ZVEI
70ms CCIR Modified ZVEI
20ms CCIR ZVEI
EEA
In addition, up to two dealer defined signalling standards can be programmed (with any frequency
and tone duration within the operational range of the radio) to cater for special applications.
Signalling is defined on a per channel basis, for optimum system integration potential. For example,
channel 1 may use 100ms CCIR and channel 2 could be ZVEI.
Benefits

Exceptional flexibility to integrate the radio into existing 5 tone systems.

No need to change hardware modules to cater for a change in signalling standard.
9.3 G/R Tone Redefinition
For each of the signalling standards, the group (G) and repeat tones (R) may be “redefined” if
necessary. For example, in some systems the 0 digit frequency has been used as a group call
identifier, as this can be selected from the keypad. 
						

							2-26FEATURES AND BENEFITS
9.4 Single Tones
Two single tones can also be dealer defined, and used within sequences or on their own. This
allows the GM300 to be sold into a wider range of existing systems.
10.0 5 Tone (Select 5) Encode Sequences
The radio can be programmed with up to 32 encode sequences.
Each encode sequence can be defined as any one of the 5 tone signalling standards or DTMF.
5 tone sequences can:

be up to 12 digits long

have digits 0-9, A-F, G, R, 2 single tones, status or address variable digits.
DTMF sequences can:

be up to 24 digits long;

have digits 0-9, P (pause),*and#.
Each sequence can be set up with a pre-time. This is a period that the radio transmits before the
sequence is sent out. This allows the total communications path from the transmitter, through any
repeaters and to the receiving radio, to be set up before tones are sent.
Benefits

Exceptional flexibility to integrate into existing 5 tone and DTMF systems.
10.1 Telegrams
1, 2 or 3 encode sequences are sent in rapid succession (concatenated) to form a telegram.
Each encode sequence can contain only one type of signalling or DTMF, but Telegrams can contain
encode sequences with different signalling.
For example, sequence 1 ZVEI
sequence 2 DTMF
The 5 tone sequence opens a telephone interconnect, and the DTMF dials the phone number.
Each radio can be programmed with up to 32 telegrams.
Telegrams may be sent in a variety of ways, such as pressing the PTT, or one of the programmable
function buttons which has set to be a call button. It is also possible to have an external call button.
Telegrams are also used to define the message sent by the Auto-Acknowledge and Call Forward
features.
Benefits

Telegrams enable the radio to be integrated into systems requiring multiple sequences to
cater for special 5 tone applications such as Caller Identity or Repeater Access. 
						

							5 Tone (Select 5) Encode Sequences2-27
10.2 Contact List (GM360, GM380)
A contact list, similar to a phonebook, may be used to give access to up to 255 pre-programmed
numbers accessed via the menu. Each entry can have an alias of up to 14 characters of
alphanumeric text. The alias is a meaningful name for the individual or group.
The Contact List is used to dial the number of outgoing calls, and to identify the caller of incoming
calls. Depending on the way the radio is programmed, it displays either the alias or the number of
the person being called, or the caller.
The Contact List can be imported to and exported from the CPS in a Microsoft Excel file.
Benefits

Fast, easy access to pre-programmed numbers, saving time dialling and ensuring accuracy.

Easy caller identification by displaying name.

Fast and easy updates to the Contact List.
10.3 Status Lists (GM360, GM380)
A status is a code for transmitting prearranged messages, e.g. status “05” may indicate “Return to
Base”. The prearranged messages (alias) and associated code digits are contained in a Status List
which contains up to 255 entries. There are separate encode and decode status lists; or they can be
combined in the decode status list.
The Status List(s) can be imported to and exported from the CPS in Microsoft Excel files.
Benefits

Pre-arranged messages used to convey status avoids ambiguity.

Efficient use of airtime.

Sends useful information to team members, discreetly, without the need to talk.

Fast and easy updates to the Status List(s)
10.4 Address and Status Multicall (GM360 with SMART mic, GM380)
Contact and Status lists limit the user to 255 pre programmed entries for each list. Multicall allows
the user to send any address or status.
The radio is put into address or status mode (as appropriate) by pressing a pre programmed button
or via the menu. The number is entered on the keypad, then a Fixed Telegram button or Address
Send button (for Advanced Multicall users only) must be pressed to insert the digits into the telegram
and send it. Alternatively, the menu select button (tick) can be pressed to store the digits for future
transmission.

Addresses up to 8 digits can be sent: 100 million addresses!

Statuses up to 3 digits can be sent: 1000 statuses.
The radio decodes the address and status data as normal. If the codes match any in the contact or
status decode lists, the alias is displayed; if the codes do not match the lists the number is displayed. 
						

							2-28FEATURES AND BENEFITS
Addresses and Status can be entered into one encode telegram and sent simultaneously. They can 
also be simultaneously decoded from one received telegram. 
Benefits

Up to 3 variable status digits.

 Up to  8  v a ria ble  address   digits.
10.4.1 Basic and Advanced Multicall Basic Multicall users only enter variable digits and use a Fixed Telegram button to transmit the 
telegram. 
Advanced Multicall users enter a telegram number (1 - 9) followed by variable digits. Address Send 
and Fixed Telegram buttons can be used to transmit the telegram. If an Address Send button is
used, the variable digits are inserted into the entered telegram, then transmitted. If a Fixed Telegram
button is used, the telegram number is ignored and the variable digits are inserted into the Fixed
telegram, then transmitted.
10.5 Dedicated Call Buttons (Call 1,2,3 and 4)
Up to 4 buttons to be programmed with a telegram which is always sent whenever the button is
pressed. It is comparable with the memory button facility on some telephones. 
Often, one of the buttons is programmed as a fixed call to the central dispatcher (Base Call); 
another button is used as a multicall button to send address and/or status digits, either selected
from the address and status lists or entered on the keypad. The GM340 can only send
pre-programmed telegrams. 
External call buttons or switches can also be programmed to the accessory connector. (See 
Accessory Connector section.) 
Benefits

Fast access to frequently called people.

Simple and effective operation.

Promotes efficient radio operation.

External call switch for simple telemetry.
10.6 Telegram on PTT
All GM300 Series radios can generate an encode telegram, either manually from one of the call 
buttons, or automatically tied to PTT operation. When the PTT is pressed, PTT Keyup Mode
automatically sends the telegram: 
Every PTT - The radio sends the telegram on every PTT press. This is often used to generate an
identity (PTT-ID) so that each transmission can be monitored by the system.
Once Only -The radio sends the telegram just once at the beginning of the call, eg to call another
radio. The sequence is not sent again until the call ends (monitor button pressed) or the Auto Reset 
time expires. 
						

							DTMF2-29
Periodic -If the system requires periodic awareness of who is transmitting, for example for health &
safety reasons, then a telegram is sent when the PTT is first pressed and periodically during the
transmission.
De-Key-An encode telegram can also be sent “On Dekey” when the PTT is released, to act as a
Cleardown call.
Benefits

Telegrams tied to PTT provide valuable system information.

Telegrams sent Once on PTT simplifies radio operation.

End of Message Alert speeds up communications.
10.7 Side Tones On/Off
Whenever the radio encodes (sends) a 5 tone telegram, usually these tones are also heard from the
radio’s loudspeaker to act as a confidence aid for the radio user. In the case of Telegram on PTT, this
also indicates when it is OK to start to talk.
These “side tones” can be set on or off, to cater for the user’s preference.
11.0 DTMF
DTMF (Dual Tone Multi Frequency) is used when the radio is required to operate with an interface to
a telephone system.
On all radios a DTMF encode sequence can be sent, and
on the GM360 with SMART mic and the GM380, the keypad can be put into DTMF live dial mode.
Each DTMF encode sequence can:

be up to 24 digits long;

have digits 0 - 9, P (pause),*and#.
The radio does not decode DTMF. A DTMF decode option board can be fitted if required.
11.1 DTMF encode sequence
All radios can send pre programmed DTMF sequences. The sequences cannot contain a
combination of 5T and DTMF digits; however, 5T and DTMF sequences can be combined in a
telegram. 
						

							2-30FEATURES AND BENEFITS
11.2 DTMF Live Dial Mode (GM360 with SMART mic, GM380)
TherearetwowaystoaccessDTMFlivedialontheradio:
Send a telephone interconnect call (5T or DTMF sequence) to a station that connects to a
telephone line. The radio can then send DTMF live dial calls from the keypad. On completion of the
call, the radio (if programmed) sends a cleardown call (5T or DTMF sequence) and the keypad
returns to the default keypad mode.
Press a button pre-programmed to enter DTMF mode. The radio then sends DTMF live dial from the
keypad. If needed, DTMF interconnect and cleardown calls can be sent from call buttons or live dial
entry on the keypad. The radio keypad remains in DTMF live dial mode until the DTMF mode button
is pressed again. When the radio exits DTMF mode, the keypad returns to the default keypad mode.
Benefits

Link up with a telephone network to extend the communication system.

Pre programmed DTMF sequences allow all radio users to call frequently needed telephone
numbers (max 32 sequences).

Live dial allows the user to dial any DTMF telephone number.
12.0 5 Tone (Select 5) Decoder
12.1 Multiple Parallel Decoders
The radio can be programmed with up to 16 parallel decoder sequences.
Each 5 tone decoder sequences can:

be up to 12 digits long

have digits 0 - 9, A - F, G, R or 2 single tones.
The radio does not decode DTMF. A DTMF decode option board can be fitted if required.
Benefits

Extremely Flexible decoder functionality to cater for many applications.
12.2 Individual Calls
Individual Calls allows two radio users to talk to each other in a one to one conversation.
Benefits

Alerts a user when a call is received specifically for them.

Less radio user fatigue - no need to always be listening.

Easier, faster communications.

Improved system performance.

Allows private / sensitive information to be exchanged between two individuals (unless
someone presses the monitor button). 
						

							5 Tone (Select 5) Decoder2-31
12.3 Group Calls
Group Calls allows a single user to call a number of other radio users at the same time for a one to
many conversation. Like a conference call, the entire conversation is shared with everybody in the
team. Although only one person can speak at a time, all members of the team can listen and take
part in the conversation.
Group Call can be achieved simply via PL radios. In this situation, all users will hear the call.
The key benefits of 5 tone radios is the ability to direct calls to a specific radio. It also allows systems
with a large number of radios to be configured to contain a number of small groups, perhaps based
on a functional or departmental basis. Each radio may be member of a number of groups.
For each decoder, it is possible to specify which digit positions in the received 5 tone sequence can
be “Group” digits. If a Group tone is received in that position rather than the usual number’s tone, the
radio recognises and decodes the call. The radio then generates a “Group Call” alert.
For example
RadioIDis: 12345
Groupdigits: ---GG
Radio will respond to: 12345 (Individual Call)
123GG (Group of up to 100 radios)
1234G (Sub-Group of 10 radios)
Both normal and expanded group call decode is supported.
Benefits

One call puts you in contact with a team of people.

Allows radio to be part of one or more workgroups.

Much more flexibility to define groups than possible with PL/DPL.

Teamwork is possible even when team members may be geographically remote from each
other.

Information is shared quickly and efficiently.
12.4 ID Decode Display - Caller Identity (GM360, GM380)
When a user sends out a call, their user ID is usually encoded in the 5 tone sequence that is
transmitted. When that call is received, the receiving radio can extract the caller’s ID information
from the telegram. If the caller’s ID matches one in the contact list, the caller’s alias is displayed. If
there is no match in the contact list then just the ID digits are displayed.
Benefits

Enables user to know who is calling before they answer the call.

Answer important calls immediately.

Answer less important calls at your convenience.

If radio user is away from vehicle, they will know who called when they return. 
						

							2-32FEATURES AND BENEFITS
12.5 Status Decode Display (GM360, GM380)
When a call is received, the receiving radio can extract the caller’s status from the telegram. If the
status matches one in the status list, the status alias is displayed. If there is no match in the status
list then just the status digits are displayed. The radio can simultaneously decode address and
status from one telegram the address and status information alternates on the display. On the
GM380 both are displayed.
Benefits

Text for standard status messages.

Fast and efficient communication.
12.6 Call Reminder
The radio sounds a distinctive alert when an incoming call is not answered. The alert continue to be
sounded periodically until the radio user presses any of the buttons. The display flashes the alias or
number of the last call received by the radio.
Benefits

Users made aware of last unanswered call.
12.7 Call Back
As the GM300 Series radios are able to work out the identity of the calling radio, it is possible to use
this number to Call Back to the original caller. The caller’s ID is immediately copied into the call back
sequence.
This is especially useful if a call is received when the radio user is temporarily out of their vehicle.
On return to their vehicle, the user hears the Call Reminder alerts and sees the display flashing the
last caller. All the radio user has to do is press the PTT, or whichever button has been programmed
with the Call 1 feature, to call back to the original caller.
Benefits

Simplifies and speeds-up return of the last call.
12.8 Missed Calls List (GM360, GM380)
If an incoming call is unanswered, the caller’s ID is placed in the Missed Calls List. The Missed Calls
List stores the following information about each call:

Caller’s radio ID, or alias (if defined in the contact list);

Status digits, or alias (if defined in the status list);

Telegram number (Advanced Multicall users only).
NOTECall back can also be made to work on GM340 models. However, the radio user will
not know which number they are calling back to!