2 talk groups, 11 alert tones – Tyco Electronics M7200 User Manual

Page 19

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MM-011553-001, Rev. A

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TG a

TG b

TG c

TG x

TG y

TG z

TG d

TG e

TG f

TG a

TG d

TG g

TG h

TG i

TG = Talk Group

Profile 1

Profile 2

Profile 3

Figure 6-3: Personality Structure Example

6.10.2

Talk Groups

A talk group represents a set of users that regularly need to communicate with one another. There can be
any number of authorized users assigned to a talk group. Talk groups are established and organized by the
OpenSky network administrator. An OpenSky talk group is similar to a channel within a conventional FM
radio system.

6.11 ALERT TONES

The M7200 radio also provides audible Alert Tones or “beeps” to indicate the various operating
conditions (see Table 6-3).

Table 6-3: M7200 Alert Tones

NAME

TONE

DESCRIPTION

Call Queued

one low tone/two high tones

Call queued for processing.

Call Denied

three short beeps

Radio is out of coverage area or requested talk group is
active.

Grant (or Go-Ahead)

single short beep

Sounded when resources become available for a call
request placed in the queue (if enabled) upon channel
access.

Call Removed

single long low-pitched tone

Notifies the user access to the channel has been lost
(out of coverage area or pre-empted by higher-priority
call).

Selective Alert
Received

four short tones

Only played once to indicate a selective alert has been
received.

Emergency Alert Tone three long beeps

Sounds when an emergency alert is declared.

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