User's Manual

Revised: 4/29/2011 6650-11-0014 R4
Approval: Page 12 of 17
There are two types of Group calls; Network and Talk Around. Network calls can be received
by any handset within range of the mesh network while Talk Around calls can only be received
by handsets within direct range of the caller. (Talk Around calls do not use or require the mesh
network). Group calls will only be heard by handsets that have selected the same group while
Broadcast calls will be heard by all handsets in range, regardless of which group is selected.
To place a group call, make sure that the group you wish to call is shown in the display and
press the PTT. If MOC or IDxxx is displayed you may change back into group mode by
pressing the Triangle (▲) (▼) key labeled ‘GRP’ or pressing the Clear Button. You may also
change the group using the group knob which automatically places the handset back into group
mode.
Individual Calls
Individual are ID specific calls placed to an specific individual handset. Other handsets will not
receive the call. A handset can receive Individual calls regardless of the group setting of the
destination handset. To place an Individual call, press the triangle (▲) (▼) key labeled ‘ID’.
‘IDxxx’ will appear on the screen. The ‘xxx’ is the ID of the last handset to which an individual
call was made. To change the call destination, use the number pad to enter the ID of the
handset you wish to call. If a mistake is made, you can use the Star (*) key to delete the last
character entered. Once the correct ID is displayed, press the PTT button to place the call. This
also sets the current ID as the new default ID until the handset is turned off.
When an Individual call is received, the handset will generate an alert tone and display the
handset ID. To respond, press PTT and speak into the microphone. If you do not respond
within several seconds, the handset will revert to displaying the selected group, effectively
ending the Individual call.
Mine Operations Center (MOC) Call
MOC calls are individual call, dedicated for communication with dispatch console in the mine
operations center. To place a MOC call select MOC by pressing the triangle (▲) (▼) key
labeled ‘MOC’. Press the PTT button to call the MOC.
5.2 TEXT MESSAGES
Text messages may be sent and received in a manner similar to cell phones. To access text
messaging press the Diamond () key from the home menu. The display will then change to
the text message menu. From here you may view your received text messages, send a text
message or clear all current text messages. If no selection is made within a few seconds the
display will return to the home menu.