Tyco Electronics MM23016 7.23 INTERCOM MODE , 7.24 TALK GROUP LOCK OUT

MM23016, Rev. C

7.23 INTERCOM MODE

The optional intercom mode gives users at multiple control heads connected to the same radio the ability

to communicate with each other without transmitting over-the-air. Turn intercom mode on and off using

the “INTERCOM” menu as follows:

1. Use to cycle through the available menu items until “INTERCOM” appears in the display.

2. Use to toggle between “On” and “Off.”

When intercom mode is turned on:

• Incoming voice calls will override intercom communications for the duration of the voice call. The

radio and associated control heads will remain in intercom mode and intercom communications will

resume when the voice call ends.

• “TG: INTERCOM” appears in the control head’s display when talking on the intercom. This indicates

microphone audio is not sent out on the selected talk group; rather, it remains localized between the

radio control positions (i.e., the control heads connected to the mobile radio).

• If a call exists on the currently selected talk group when a PTT button is pressed at one of the control

heads, “TG: in use” appears in the display to indicate intercom mic audio cannot preempt the call on

the talk group.

CAUTION

A user at a radio with only one control head/front panel can turn intercom mode on. In

this case, pressing the microphone’s PTT button will NOT send microphone audio

anywhere.

There are two ways of focusing voice communications by suppressing calls from talk groups in the

currently active profile:

1. No Scan. By turning scan off (selecting “No Scan” via the “ScnModeMenu”), only the selected talk

group is audible.

2. Lock Out. By locking out selected talk groups, the “chatter” of the locked out talk groups cannot be

heard. This focuses the user’s scanning resources to calls only on desired talk groups.

Talk group lock out is a scan-related feature. With lock out, one or more talk groups in the active profile

can be temporarily disabled from being scanned. Calls are not received on locked-out talk groups. Lock

out settings are not retained between profile changes or when the radio is power cycled.

Lock out is a listening (receive) function and only blocks received calls on locked out

talk groups. Lock out does not affect transmit capability. The above methods do not

apply to recent emergency lock outs.

Only talk groups in the active profile can be locked out, since they are the only talk groups whose voice

calls can be heard on the radio.

P1 and P2 talk groups cannot be locked out.