How to set the three call modes of the DMR828 walkie talkie module

There are three call modes of DMR828 walkie talkie module: single account, group call and all call. Because the call mode setting process is more complicated, NiceRF hereby present a setting tutorial for wireless, hoping to help everyone.

First, let's take a look at the difference between these three call modes:

1. Single call

instruction

Transmission parameters: Set the contact person 0x18 in the 4.19 communication protocol of the DMR828 walkie talkie module

Description: Set the intercom contact. The instruction is set successfully, after pressing PTT, send it according to the contact set by the instruction,

The parameters are not saved after power failure.

Format: 68 18 01 01 CHKSUM 00 04 Call_type CallNum10

Parameter Description:

Call_type: One byte, call type

0x01-> call

CallNum: three bytes, contact number

Receiving parameters: set the ID of this unit in the 4.29 communication protocol of the DMR828 walkie-talkie module

Description: Set the local intercom number

Format: 68 1B 01 01 CHKSUM 00 03 SelfNum 10

Parameter Description:

SelfNum: 3 bytes, the local intercom number

example:

2. Group call

2.1 Instructions

Transmission parameters: Set the contact person 0x18 in the 4.19 communication protocol of the DMR828 walkie-talkie module

Description: Set the intercom contact. The instruction is set successfully, after pressing PTT, send it according to the contact set by the instruction,

The parameters are not saved after power failure.

Format: 68 18 01 01 CHKSUM 00 04 Call_type CallNum10

Parameter Description:

Call_type: One byte, call type

0x02-> Group call

CallNum: three bytes, contact number

Receiving parameters: Set the receiving group call ID on the 4.27.1 communication protocol

Description: Add group call contacts, and switch the group call contacts of the current channel to this list

Format: 68 29 01 01 CHKSUM 00 04 INDEX CallNum 10

Parameter Description:

INDEX: 1 byte, group call list sequence number, range 1~32

CallNum: 3 bytes, group call contact number

2.2 Description

Each DMR828 walkie-talkie module saves 32 receiving group lists, which can store valid group call numbers.

When the DMR828 radio module is working, one of the lists can be selected as the current receiving list. Note that the current receiving group list of each channel is independent of each other, and the current receiving group list will automatically switch after the channel is switched.

Only when the call type initiated by the caller is a group call and the contact number is in the current receiving list, the communication can be normal.

The user can switch the receiving list to the current channel by command 0x29 or add group call contacts to the receiving list. For ease of use, you can use only one of the lists.

3. All call

The setting of all call is the same as that of group call, but the receiving parameters of all call do not need to be set and the calling number range is different. Be sure to pay attention to these two points when setting the full call.