Tyco Electronics M/A-COM M7200 ユーザーズマニュアル

 

TG = Talk Group 

 

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. 

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

Call Queued 

one low tone/two high tones 

Call queued for processing 

Call Denied 

three short  

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 
receive  

Emergency Alert Tone   three (3) short beeps  

Sounds when an emergency alert is declared  

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