DMR Conventional Radio Full Duplex Call Application Notes R2.0 I
DMR Conventional Radio Full Duplex Call Application Notes R2.0 I
DMR Conventional Radio Full Duplex Call Application Notes R2.0 I
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Application Notes Contents
Contents
Documentation Information ................................................................................................................................... 1
1. Overview ............................................................................................................................................................... 2
1.1 Introduction ..................................................................................................................................................... 2
1.2 Principle ........................................................................................................................................................... 2
1.3 Application Example ....................................................................................................................................... 3
1.4 Restrictions ...................................................................................................................................................... 4
1.5 Versions ........................................................................................................................................................... 4
2. Radio Configuration ............................................................................................................................................ 5
2.1 Tool.................................................................................................................................................................. 5
2.2 Procedure ......................................................................................................................................................... 5
3. User Operations ................................................................................................................................................... 8
3.1 Initiating a Full Duplex Call ............................................................................................................................ 9
3.2 Answering/Rejecting a Full Duplex Call ....................................................................................................... 10
3.3 Ending a Full Duplex Call ............................................................................................................................. 12
Abbreviations ......................................................................................................................................................... 12
i
Application Notes Documentation Information
Documentation Information
This section describes the conventions and revision history of this document.
Conventions
Icons
Icon Description
Tip Indicates information that can help you make better use of your product.
Note Indicates references that can further describe the related topics.
Caution Indicates situations that could cause data loss or equipment damage.
Danger Indicates situations that could cause major personal injury or even death.
Notations
Item Description
The quotation marks enclose the name of a software interface element. For example, click
""
"OK".
The text in boldface denotes the name of a hardware button. For example, press the PTT
Bold
key.
The symbol directs you to access a multi-level menu. For example, to select "New" from the
->
"File" menu, we will describe it as follows: File -> New.
Revision History
Version Release Date Description
R2.0 September, 2018 The radio can initiate full duplex call in Repeater Mode and to telephones.
1
Overview Application Notes
1. Overview
1.1 Introduction
Full duplex call refers to a private call, during which both the called party and the calling party can send and
receive voice simultaneously.
Full duplex call can be set up between two radios or a radio and a telephone (including PSTN, PABX, VoIP and
mobile phone). It not only frees your hands but also guarantees long-time talk whenever required. In addition, it
simplifies operations and improves communication efficiency.
1.2 Principle
The full duplex call can be set up on digital channel in Direct Mode or Repeater Mode.
Direct Mode
In Direct Mode, the radio transmits and receives voice on two slots with the same frequency.
Call ends
The call fails if Radio B does not support full duplex call. But if Adaptive Switch to Half-duplex is enabled
on Radio A, the user can initiate the call in half duplex mode, in which the calling radio and the called
radio can either send or receive voice.
2. When receiving the call, Radio B answers it according to the Answer Mode configured via CPS.
FOACSU: You need to hold down PTT or Full Duplex Call programmed key to answer the call.
2
Application Notes Overview
3. After the full duplex call sets up, the microphones and speakers of Radio A and Radio B are enabled.
If two slots of the repeater are idle, the repeater forwards the call to Radio B. In IP multi-site connect
system, the repeater forwards the call to another repeater over the internet, and then to Radio B.
If two slots of the repeater are not idle and Adaptive Switch to Half-duplex is enabled on Radio A, the
user can initiate the call in half duplex mode. In this mode, the calling radio and the called radio can
either send or receive voice.
Radio B answers the call according to Answer Mode configured via CPS, if it supports full duplex call.
FOACSU: hold down PTT or Full Duplex Call programmed key to answer the call.
if Radio B does not support full duplex call and Adaptive Switch to Half-duplex is enabled on Radio A, the
user can initiate the call in half duplex mode. In this mode, the calling radio and the called radio can either
send or receive voice.
3. After the full duplex call sets up, the microphones and speakers of Radio A and Radio B are enabled.
3
Overview Application Notes
For example, when an inspector in oil and chemistry industry found that a fault occurs on a critical equipment.
He/she needs to detail the fault to a technical expert and carry out the solution. In this case, radio featuring full
duplex call is essential for preventing the deterioration of the fault and implementing first-aid security measures.
1.4 Restrictions
Only normal private call between radios or between a radio and a telephone can be initiated in full duplex
mode. Other call services, such as group call, emergency call, can only be initiated in half duplex mode, and
the calling and the called radios can either send or receive voice signals.
The SFR feature must be disabled (CPS path: Conventional -> Channel -> Digital Channel -> CH DX -> SFR)
and Battery Save Mode must not be set as 1-4 (CPS path: Conventional -> General Setting -> Setting ->
Battery Save -> Battery Save Mode).
In IP multi-site connect system, Jitter Buffer Length of the repeater must not be larger than 3. The CPS path is
Conventional -> General Setting -> Network -> IP Connect Configuration.
1.5 Versions
R9.0: The repeater with firmware V9.00.04.405.iM or later supports full duplex call.
R8.6: Duplex MD78Xi with firmware V8.06.01.138 or later supports full duplex call.
R8.5: PD98X and duplex MD78X with firmware V8.05.06.005 or later support full duplex call.
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Application Notes Radio Configuration
2. Radio Configuration
The configuration of PD98X and duplex MD78X/MD78Xi is the same. This chapter takes duplex MD78X as an
example.
2.1 Tool
CPS of V9.00.07.712.iM or later is required.
2.2 Procedure
Step 1 Set call setup mode of PTT to Full Duplex, and configure Answer Mode of the radio.
CPS path: Conventional -> Digital Common -> Basic -> Full Duplex.
Parameter: Call Setup Mode and Answer Mode. For parameter descriptions, refer to CPS Help.
Step 2 Enable Adaptive Switch to Half-duplex, and set time parameters to control full duplex call.
CPS path: Conventional -> Digital Common -> Basic -> Full Duplex.
Parameter: Call Timer Display, Full Duplex Total Time, Caller Wait Answer Time, Called Wait
Answer Time, No Signal Hang Time, Total Time-out Pre-alert Time and Adaptive Switch to
Half-duplex. For parameter descriptions, see table below.
Call Timer Sets the way to display the call duration. Default: Down
5
Radio Configuration Application Notes
Full Duplex Sets duration of a full duplex call. The call ends Range: 10~600s
Caller Wait Sets waiting time of the calling radio before the
Range: 2~60s
Answer called radio answers the call. The call ends when
Default: 10s
Time this time is up.
Called Wait Sets how long the called radio rings when it
Range: 2~60s
Answer receives a full duplex call. The call ends when this
Default: 10s
Time time is up.
No Signal Sets hold time of the radio if no signal on the Range: 1~60s
Hang Time channel. The call ends when this time is up. Default: 2s
Total Sets the time to remind the user that the radio will
Time-out exit the call, exactly, when the remaining time for Range: 0~240s
Pre-alert the call comes to this time, the radio will remind Default: 60s
Time the user.
6
Application Notes Radio Configuration
CPS path: Conventional -> Digital Common -> Basic -> Encode.
Parameter: Private Call Encode. For parameter descriptions, refer to CPS Help.
Step 4 (Optional) Switch the call setup mode through radio menu.
CPS path: Conventional -> General Setting -> Menu -> Common Menu -> Radio Settings.
Parameter: Call Setup Mode. For parameter descriptions, refer to CPS Help.
Step 5 (Optional) Switch the call setup mode through a programmable key.
Step 7 (Optional) Enable Off Hook Answer Call or On Hook Clear Call to answer or end a full duplex call.
7
Radio Configuration Application Notes
Note
PD98X does not support Off Hook Answer Call and On Hook Clear Call.
This step is necessary when the radio and telephone communicates through full duplex call.
The parameter configuration of the radio and repeater is the same as that for half-duplex call. Refer to
Section 4.2 Configuration of DMR Conventional Radio_SIP Phone_Application Notes for details.
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Application Notes User Operations
3. User Operations
This chapter describes how a radio initiates, answers/rejects, and ends a full duplex call.
If Full Duplex has been configured (Step 1 in 2.2), you can hold down PTT to initiate a full duplex
call.
If Call Setup Mode menu has been configured (Step 4 in 2.2), you can switch the call setup mode to
full duplex via radio menu (Menu -> Settings -> Radio Settings -> Call Setup Mode -> Full Duplex).
If a programmed Call Setup Mode Switch key has been configured (Step 5 in 2.2), you can switch
the call setup mode to full duplex via this key.
When the call setup mode switches to Full Duplex, the radio displays icon on the screen.
To call a radio: Input a private contact number, or go to "Contact -> Favorite Contact/Private
Contact" to select a private contact.
To call PSTN/PABX/VoIP/mobile phone: Press the programmed DTMF Keypad key or go to Menu
-> Phone -> DTMF Keypad to enter DTMF keypad mode and then input the phone number. The
radio displays in the DTMF Keypad mode.
The following interface appears when the radio initiates a full duplex call.
9
User Operations Application Notes
To call a radio: Input a private contact number or go to "Contact -> Favorite Contact/Private
Contact" to select a private contact.
To call PSTN/PABX/VoIP/mobile phone: Press the programmed DTMF Keypad key or go to Menu
-> Phone -> DTMF Keypad to enable DTMF keypad and then input the phone number.
Step 2 Press the programmed Setup Duplex Call key to initiate a full duplex call.
10
Application Notes User Operations
Press (Home Key) or the programmed Clear Down key (CPS path: Conventional -> General Setting
-> Buttons) to reject the call. The calling radio displays “Call Rejected”.
From Phone
Press the programmed DTMF Keypad key or go to Menu -> Phone -> DTMF Keypad to enable DTMF
keypad, press Disconnect Code key and then press PTT.
If One-Key Disconnect is enabled, press the Disconnect Code key to reject the call directly.
Answering a Full Duplex Call
From Radio
If Answer Mode is set as OACSU, the radio answers the call automatically.
If Answer Mode is set as FOACSU, you need to press PTT key or the programmed Full Duplex Call key
within the preset Called Wait Answer Time to answer the call.
For duplex mobile radio, if Off Hook Answer Call is enabled (Step 7 in 2.2), the radio answers the call in
case of off-hook operation.
The following interface appears after the full duplex call is set up.
From Phone
Press the programmed DTMF Keypad key or go to Menu -> Phone -> DTMF Keypad to enable DTMF
keypad, press Connect Code key and then press PTT.
11
User Operations Application Notes
If One-Key Connect is enabled, press the Connect Code key to answer the call directly.
The following interface appears after the full duplex call is set up.
From Radio
Press the programmed Clear Down key (CPS path: Conventional -> General Setting -> Buttons)
For duplex mobile radio, if On Hook Clear Call is enabled (Step 7 in 2.2), the radio ends the call in case of
on-hook operation.
From Phone
Press the programmed DTMF Keypad key or go to Menu -> Phone -> DTMF Keypad to enable DTMF
keypad, press Disconnect Code key and then PTT.
If One-Key Disconnect is enabled, press the Disconnect Code key to end the call directly.
Note
If no Disconnect Code key is configured, you must access DTMF keypad, input Disconnect Code and press
PTT to end the call.
12
Application Notes Abbreviations
Abbreviations
Abbreviation Full Name
13
Hytera Communications Corporation Limited.
2018 Hytera Communications Corporation Limited.