E.F. Johnson Company 7780 Series Manuel d'utilisateur télécharger pdf (Page 41)

SMARTNET/SMARTZONE/P25 TRUNKED FEATURES

channel (with scanning disabled). When the selected

channel is programmed with both Talk and Announce-

ment groups, only the Talk and Announcement group

IDs are detected. Other IDs in the Announcement

group are detected only if no talk group is

programmed.

When a group call is received, the alias of the

selected channel is displayed. The radio can be

programmed so that the following are also displayed

for 0.5-7.0 seconds or continuously during the call.

PTT ID- The unit ID of the mobile placing the

call is displayed.

TG on Rx - The alias of the talk group on which

the call is being received is displayed.

User Group ID* - If the group ID of the call

being received is included in a preprogrammed

User Group ID list, the alias programmed in that

list for that group is displayed.

6.5 PRIVATE (UNIT-TO-UNIT) CALLS

NOTE: With P25 Trunked operation, these calls are

called Unit Calls, and they function the same as the

Enhanced Private Conversation mode described in the

following information.

6.5.1 GENERAL

Private calls allow calls to be placed to a specific

mobile unit. Either the Enhanced Private Conversa-

tion™ or standard Private Conversation modes may be

programmed depending on the capabilities of the radio

system. One difference between these call types is that

the Enhanced type provides an indication that the

called mobile is not on the air and the standard version

does not. Operation in each of these modes is

described in the following information.

The CALL option switch is required to place

these calls, and either that switch or the RESP

(Response) switch is required to receive them. Private

calls are programmed to operate in one of the

following modes:

• Disabled

• Answer-only capability

• List only - Unit IDs can be selected from a prepro-

grammed list only (direct entry as follows is not

allowed)

• Unlimited - Unit IDs can be selected from a list

and also dialed directly using the front panel

controls** or the HHC keypad (later units only).

6.5.2 PLACING AN ENHANCED PRIVATE

CONVERSATION CALL

Recalling From A List

1. Momentarily press the CALL (Private/Unit Call)

option switch. The tag (alias) of the last called

mobile is displayed.

2. To select another mobile, rotate the Select switch

until the alias for the desired mobile is displayed.

3. Press the PTT switch and one of the following

events then occurs:

(Proceed to the bulleted list which follows Item 6 in

the next section for events that may occur next.)

Direct Entry Using Front Controls or HHC Keypad

4. Press and hold the Private Call option key until a

tone sounds (approximately 1 second). The last ID

called is displayed.

5. If using the front panel controls, enter the ID of the

radio you are calling (five digits must be entered) by

rotating and pressing the Select switch. With the

HHC, enter the number using the DTMF keypad. To

cancel the call, press the Private Call Option key

again.

6. Press the PTT switch to initiate the call. If the

entered number is valid, the display indicates the

alias of the ID if it matches an ID in the call list.

Otherwise, the ID you entered continues to be

displayed.

Events that may then occur are as follows:

• If the mobile being called is on the air, “WAIT” is

displayed and ringing is heard until the called

party answers or for 20 seconds, whichever occurs

first. Pressing the PTT or an option switch stops

* This feature requires firmware 1.24.1/2.2.1/3.2.1/4.2

or later.

** This feature requires firmware Version 1.28/2.6/3.6/4.2

or later.

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E.F. Johnson Company 7780 Series Manuel d'utilisateur Page 41

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