Tyco Electronics M7300 Series ユーザーズマニュアル

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The M7300 radio also provides audible Alert Tones or “beeps” to indicate the various operating 
conditions (see Table 7-3). 

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.  
If the radio roams to another site while transmitting, then 
it will auto rekey and begin transmitting on that tower. It 
gives a second grant tone to let the user know they have 
roamed. 

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 tones  

Sounds when an emergency alert is declared.  

Emergency Cleared 
Tone 

One long low-pitched tone 

Sounds when an emergency is cleared. 

Selective Call Ring 
Tone 

A ringing tone similar to a 
telephone 

Ringing is repeated every four seconds until the call is 
accepted or rejected by the radio being called or until the 
network drops the call if unanswered after one minute. 

PSTN Ring Tones 

A single medium-pitch 
repeating tone 

Two ring tone - one generated by the radio when there is 
an incoming telephone call or an outgoing telephone call 
attempt is waiting for the telephone interconnect gateway 
equipment to dial the Public Switched Telephone 
Network (PSTN). The second ring tone sounds when the 
gateway equipment has dialed the number. 

Roam Tone 

Two short tones, one high-
pitched and one low-
pitched 

Sounds when the radio transitions from one radio base 
station site to another. 

Out of Range Tone 

Three brief tones  

If enabled via programming, sounds at a programmable 
interval while the radio is in a state of persistent 
deactivation.  

 

Table 7-4 illustrates the basic M7300 OpenSky menu structure. Menu items will vary depending upon 
system programming, radio hardware, and optional configurations. All menus except the dwell display 
menu can be turned off by network administration personnel.