A.W. Communication Systems DRC-32 User Instruction Manual - page 20
-Page 20 –
© A.W. Communication Systems Limited 2004
Calling More Than One Mobile - selcall
The selective calling system enables groups of mobiles to be called. Issuing a group
call will not get a ringing- no answer type of response. Connected will always be
shown as a result of a group call.
To make a group call the [
GROUP
] key is pressed as part of the ident ity input from
the keypad. The place within the identity string at which the [
GROUP
] key is pressed
determines how many mobiles are called. By way of example, consider a system
where the operator normally inputs three digits for the identity code. Inputting 001
will call mobile number one only. Input 00 [
G
roup], and the nine mobiles 001 to 009
will be called. Similarly, 0
G
will call the 99 mobiles between 001 and 099.
GG
will
call 999 mobiles.
Calling More Than One Mobile – TETRA
Within the TETRA system facilities are available to call groups of mobile resources
providing that the individual units ha ve been configured with the same group number.
To initiate a TETRA group call, select the TETRA channel and then enter the group
identity digits finally press the [
GROUP
] key to initiate the call.
Finishing Calls
When a call to a mobile comes to an end, it may be finished and the mobile placed
back into standby mode by pressing [
CLOSE
] key. Where the handset has been used
for calls, placing the handset back on the rest will close the current call.
Talk Through Facility.
To enable mobiles to communicate directly with each other the talk through facility
needs to be turned on. Pressing [
T/T
] key turns on the talk through facility and the TT
led will illuminate. A second operation of the [
T/T
] key will cancel the talk through
facility. This facility is not available on TETRA channels.
Facility Control
Your system supplier may have configured extended control of your base station unit.
This extended control may take several forms, and therefore, is not detailed here.
Operation of the [
FAC
] key will activate whatever extended control has been
provided and the Fac led will illuminate. On TETRA channels the [
FAC
] key is used
to select between simplex (PTT) calls or duplex calls. To initiate a duplex call, select
the TETRA channel, dial the digits required, press the FAC button and then press the
call button. Duplex calls can only be made using the handset or headset options. If the
internal microphone or the desk microphone is used then the call is set up as a duplex
call but the operator still acts as if in PTT mode requiring use of the PTT for transmit
audio.