NXDN Bridging - John's Vademecum

Try to learn something about everything, and everything about somethingThomas Huxley “Darwin's bulldog” (1824-1895)
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<-[[.:start]]


====== NXDN Bridging ======

** A change from [[allstar_dmr| DMR!]] **

FIXME

===== Overview of IP UDP ports =====

<code>

    Asterisk              Analog_Bridge           DVSwitch                  NXDNGateway
    ========              =============           MMDVM_Bridge              ===========
                                                  ============
                                                  
    [node]                [USPR]
    rxPort 31001 <------- txPort 31001
    txPort 34001 -------> rxPort 34001
                             ↓ ↑
                          [md380-emu]:2470
                             ↓ ↑
                          [AMBE]                [NXDN]
                          txPort 33103 ------>  rxPort 33103
                          rxPort 33100 <------  txPort 33100
                                                  ↓ ↑
                                                [NXDN Network]              [General]
                                                LocalPort   14021   <-----  RptPort   14021
                                                GatewayPort 14020   ----->  LocalPort 14020
                                                                                ↓ ↑
                                                                            [Network]
                                                                            Host IP/Port obtained from hostfiles
                                                                            by reference to Analog_Bridge txTG=xxxx
</code>



===== The main Things =====

  * Make sure ''Analog_Bridge.ini'' has the correct txPort and rxPort in its [USRP] section 

<code ini>
[USRP]
address = 127.0.0.1           ; IP address of USRP partner (Analog_Reflector, Allstar/Asterisk or another Analog_Bridge)
txPort = 31001                ; Transmit USRP frames on this port
rxPort = 34001                ; Listen for USRP frames on this port
</code>

  * It should match Asterisk's private node as defined in ''/etc/asterisk/rpt.conf'' - in this case it's [1398]

<code ini>
[1398]
rxchannel = USRP/127.0.0.1:34001:31001 ; Use the USRP channel driver. Must be enabled in modules.conf
 ; 127.0.0.1 = IP of the target application
 ; 34001 = UDP port the target application is listening on
 ; 32001 = UDP port ASL is listening on
</code>



  * Make Sure ''Analog_Bridge.ini'' has the correct txPort and rxPort in its [AMBE] section

<code ini>
[AMBE_AUDIO]
address = 127.0.0.1                     ; IP address of xx_Bridge
; For DMR  - match the ports set in DVSwitch.ini
;txPort = 31103                          ; Transmit TLV frames to partner on this port
;rxPort = 31100                          ; Listen for TLV frames from partner on this port

; FOr NXDN - match the ports set in DVSwitch.ini
txPort = 33103                          ; Transmit TLV frames to partner on this port
rxPort = 33100                          ; Listen for TLV frames from partner on this port
ambeMode = NXDN                          ; DMR, DMR_IPSC, DSTAR, NXDN, P25, YSFN, YSFW (encode PCM to this format)
</code>



  * should match the ports in ''DVSwitch.ini'' [NXDN] section

<code ini>
; Configure the NXDN Partner
; Audio format is AMBE 72 bit
[NXDN]
address = 127.0.0.1             ; Address to send AMBE TLV frames to (export)
txPort = 33100                  ; Port to send AMBE TLV frames to (export)
rxPort = 33103                  ; Port to listen on (import)
</code>

  * Disable [DMR] in ''MMDVM_Bridge.ini''

<code ini>
[DMR]
Enable=0
ColorCode=1
EmbeddedLCOnly=1
DumpTAData=0
</code>

  * Enable [NXDN] in ''MMDVM_Bridge.ini'' and set your own NXDN ID number

<code ini>
[NXDN]
Enable=1
RAN=1
Id=7485
</code>

  * Set Fallback IDs in ''DVSwitch.ini''

<code ini>
fallbackID = 2354429            ; In case we can not find a valid DMR id in the database, export this one
nxdnFallbackID  = 7485         ; Use this ID when the input DMR ID is not found in the database
</code>

  * Set Callsign in ''NXDNGateway.ini''

<code ini>
[General]
Callsign=GM4SLV
Suffix=NXDN
</code>

  * I don't know what ''Suffix'' means, I left it as found
  * Set the NXDN talkgroup in ''Analog_Bridge.ini'' 
  * NXDN Talkgroups are listed here : [[https://www.pistar.uk/nxdn_reflectors.php]]
    * A Talkgroup actually seems to specify a particular reflector IP address/Hostname & UDP port
    * These are retrieved by ''NXDNGateway'' from the hostfile : ''/var/lib/mmdvm/NXDNHosts.txt''
    * Setting the ''txTG=23551'' in ''Analog_Bridge.ini'' causes ''NXDNGateway'' to make a connection to the relevant reflector when you send traffic by keying up. 
    * For example TG23551 (Scot-Multi) appears in ''NXDNHosts.txt'' as:

<code>
23551   nxdnscotland.ddns.net   41400
</code>

  * Having ''txTG=23551'' in ''Analog_Bridge.ini'' causes DVSwitch to connect, and start to flow packets, with ''nxdnscotland.ddns.net:41400''
  * Another source of info [[https://dvref.com/nxdn/]]
    * TG23551 : [[https://dvref.com/nxdn/nxdn-23551]]

{{ :public:radio:allstar:tg23551.jpg?direct&600 |}}

==== Updating DVSwitch Hostfiles ====

  * DVSwtich keep its hostfiles in ''/var/lib/mmdvm'' and updates via ''cron.daily/DVSM_Update'' which calls ''/opt/MMDVM_Bridge/dvswitch.sh update''
  * This tries to download hostfiles from various places using ''curl''
  * It seems to fail most of the time due to a SSL problem
  * A workaround is to put "insecure" in root's ~/.curlrc

<code bash>


gm4slv@node481482:~$ sudo su -

root@node481482:~# echo insecure >> ~/.curlrc

root@node481482:~# /opt/MMDVM_Bridge/dvswitch.sh update

</code>

++++ DVSwitch.ini |

===== DVSwitch.ini =====

<code ini>
; MMDVM_Bridge export / import configuration file.
;   This file should be placed along side of MMDVM_Bridge or you can supply
;   an absolute path in the DVSWITCH environment variable, e.g:
;   DVSWITCH=/etc/MMDVM_Bridge/DVSwitch.ini
;   before executing MMDVM_Bridge
;
; Another method to set the enviorment variable is to use the systemd unit file
; by adding:
; Environment=DVSWITCH=/etc/MMDVM_Bridge/DVSwitch.ini
; to /lib/systemd/system/mmdvm_bridge.service

; Configure the Quantar Repeater Partner
; Note that the TX and RX ports are already reversed for MMDVM_Bridge <--> Quantar_Bridge
[QUANTAR]
address = 0.0.0.0               ; Address to send IMBE TLV frames to (export)
txPort = 34103                  ; Port to send IMBE TLV frames to (export)
rxPort = 34100                  ; Port to listen for IMBE TLV frames on (import)
quantarPort = 1994              ; HDLC frames To/From the Quantar repeater
debug = 0                       ; Debug 0 = off, 1 = on (adds lots of additional messages)
logLevel = 2                    ; Logging levels, 0=No logging, 1=Debug, 2=Message, 3=Info, 4=Warning, 5=Error, 6=Fatal
logFilePath = /var/log/dvswitch/Quantar_Bridge.log

; Configure the DMR Partner
; Audio format is AMBE 72 bit
[DMR]
address = 127.0.0.1             ; Address to send AMBE TLV frames to (export)
txPort = 31100                  ; Port to send AMBE TLV frames to (export)
rxPort = 31103                  ; Port to listen on (import)
slot = 2                        ; Export slot
exportTG = 0                    ; Which TG to export 
hangTimerInFrames = 0		; Use 50 for 3 seconds of hang time (3000 / 60) 
talkerAlias = %callsign %location %description ; Get callsign location and description from MMDVM_Bridge.ini

; Configure the D-Star Partner
; Audio format is AMBE 48 bit (DSAMBE)
[DSTAR]
address = 127.0.0.1             ; Address to send AMBE TLV frames to (export)
txPort = 32100                  ; Port to send AMBE TLV frames to (export)
rxPort = 32103                  ; Port to listen on (import)
fallbackID = 1234567            ; In case we can not find a valid DMR id in the database, export this one
exportTG = 9                    ; Which TG to export
slot = 2                        ; Export slot
RemotePort = 54321		; Port to send Gateway commands to
message = %location %description ; Get location and description from MMDVM_Bridge.ini

; Configure the NXDN Partner
; Audio format is AMBE 72 bit
[NXDN]
address = 127.0.0.1             ; Address to send AMBE TLV frames to (export)
txPort = 33100                  ; Port to send AMBE TLV frames to (export)
rxPort = 33103                  ; Port to listen on (import)
fallbackID = 2354429            ; In case we can not find a valid DMR id in the database, export this one
nxdnFallbackID  = 7485         ; Use this ID when the input DMR ID is not found in the database
translate = 1234=4321           ; Translate NXDN TG < -- > DMR TG (bidirectional)
slot = 2                        ; Export slot
RemotePort = 6075		; Port to send Gateway commands to

; Configure the P25 Partner
; Audio format is IMBE 88 bit
[P25]
address = 127.0.0.1             ; Address to send AMBE TLV frames to (export)
txPort = 34100                  ; Port to send AMBE TLV frames to (export)
rxPort = 34103                  ; Port to listen on (import)
slot = 2                        ; Export slot
RemotePort = 6074		; Port to send Gateway commands to

; Configure the Yaesu Fusion Partner
; Audio format is AMBE 72 bit
; Audio format is IMBE 88 bit
[YSF]
address = 127.0.0.1             ; Address to send AMBE TLV frames to (export)
txPort = 35100                  ; Port to send AMBE TLV frames to (export)
rxPort = 35103                  ; Port to listen on (import)
txWidePort = 35105		; Port to send IMBE TLV frames to for YSFw (export)
fallbackID = 1234567            ; In case we can not find a valid DMR id in the database, export this one
exportTG = 9                    ; Which TG to export
slot = 2                        ; Export slot
RemotePort = 6073		; Port to send Gateway commands to

; Configure the BrandMeister connection
; Simple Terminal Feature Update
; Audio format is AMBE 72 bit
[STFU]                          ; Brandmeister Open DMR Terminal (ODMRT) Protocol
BMAddress = 3102.repeater.net   ; Brandmeister ODMRT server address
BMPort = 54006                  ; Brandmeister ODMRT port
BMPassword = passw0rd           ; Your Brandmeister password
Address = 127.0.0.1             ; Address to send AMBE TLV frames to (export)
txPort  = 36100                 ; Port to send AMBE TLV frames to (export)
rxPort  = 36103                 ; Port to listen on (import)
UserID  = 1234567               ; Your DMR ID
TalkerAlias = N0CALL Name City  ; Max 27 characters
StartTG = 3166                  ; Startup talk group
LogLevel = 3                    ; STFU log level (0=No logging, 1=Debug, 2=Message, 3=Info, 4=Warning, 5=Error)

[ASL]
address = 127.0.0.1
txPort = 30100
rxPort = 30103

</code>

++++

++++ MMDVM_Bridge.ini |

===== MMDVM_Bridge.ini =====

<code ini>
[General]
Callsign=GM4SLV
Id=235442998
Timeout=180
Duplex=0

[Info]
RXFrequency=144900000
TXFrequency=144900000
Power=1
Latitude=60.2885
Longitude=-1.425
Height=0
Location="GM4SLV Bridge2"
Description=MMDVM_Bridge
URL=https://gm4slv.org.uk

[Log]
# Logging levels, 0=No logging, 1=Debug, 2=Message, 3=Info, 4=Warning, 5=Error, 6=Fatal
DisplayLevel=1
FileLevel=2
FilePath=/var/log/mmdvm
FileRoot=MMDVM_Bridge

[DMR Id Lookup]
File=/var/lib/mmdvm/DMRIds.dat
Time=24

[NXDN Id Lookup]
File=/var/lib/mmdvm/NXDN.csv
Time=24

[Modem]
Port=/dev/null
RSSIMappingFile=/dev/null
Trace=0
Debug=0

[D-Star]
Enable=0
Module=B

[DMR]
Enable=0
ColorCode=1
EmbeddedLCOnly=1
DumpTAData=0

[System Fusion]
Enable=0

[P25]
Enable=0
NAC=293

[NXDN]
Enable=1
RAN=1
Id=7485

[D-Star Network]
Enable=0
GatewayAddress=127.0.0.1
GatewayPort=20010
LocalPort=20011
Debug=0

[DMR Network]
Enable=0

; TGIF
;Address=tgif.network
;Port=62031
;TGIF Password for 2354435
;Password=XXXXXXXXX
; TGIF Password for 2354429
;Password=XXXXXXXXX

; Brandmeister
Address=2341.master.brandmeister.network
Password=XXXXXXX
Port=62031

Jitter=750
Local=62032

; FOR DVS_Ph F
;Address=78.129.135.43
;Port=55555
;Password=PASSWORD
;Options=StartRef=4000;RelinkTime=0;UserLink=0;TS1_1=733;

Slot1=0
Slot2=1
Debug=0

[System Fusion Network]
Enable=0
LocalAddress=0
LocalPort=3200
GatewayAddress=127.0.0.1
GatewayPort=4200
Debug=0

[P25 Network]
Enable=0
GatewayAddress=127.0.0.1
GatewayPort=42020
LocalPort=32010
Debug=0

[NXDN Network]
Enable=1
#LocalAddress=127.0.0.1
Debug=1
LocalPort=14021
GatewayAddress=127.0.0.1
GatewayPort=14020
</code>

++++

++++ NXDNGateway.ini |

===== NXDNGateway.ini =====

<code ini>
[General]
Callsign=GM4SLV
Suffix=NXDN
# The next four lines are for a Kenwood repeater
# RptProtocol=Kenwood
# RptAddress=1.2.3.4
# RptPort=64000
# LocalPort=64000
# The next four lines are for an Icom repeater
# RptProtocol=Icom
# RptAddress=1.2.3.4
# RptPort=41300
# LocalPort=41300
# The next four lines are for an MMDVM
RptProtocol=Icom
RptAddress=127.0.0.1
RptPort=14021
LocalPort=14020
Debug=0
Daemon=0

[Info]
RXFrequency=223500000
TXFrequency=223500000
Power=1
Latitude=41.7333
Longitude=-50.3999
Height=0
Location=Iceberg
Description=DVSwitch
URL=https://groups.io/g/DVSwitch

[Voice]
Enabled=1
Language=en_GB
Directory=./Audio

[aprs.fi]
Enable=0
# Server=noam.aprs2.net
Server=euro.aprs2.net
Port=14580
Password=9999
Description=APRS Description
Suffix=N

[Id Lookup]
Name=/var/lib/mmdvm/NXDN.csv
Time=24

[Log]
# Logging levels, 0=No logging, 1=Debug, 2=Message, 3=Info, 4=Warning, 5=Error, 6=Fatal
DisplayLevel=1
FileLevel=2
FilePath=/var/log/mmdvm
FileRoot=NXDNGateway

[Network]
Port=14050
HostsFile1=/var/lib/mmdvm/NXDNHosts.txt
HostsFile2=/var/lib/mmdvm/private_NXDNHosts.txt
ReloadTime=60
ParrotAddress=127.0.0.1
ParrotPort=42021
NXDN2DMRAddress=127.0.0.1
NXDN2DMRPort=42022
# Startup=10200
InactivityTimeout=0
Debug=0

[Mobile GPS]
Enable=0
Address=127.0.0.1
Port=7834

[Remote Commands]
Enable=1
Port=6075

</code>

++++

++++ Analog_Bridge.ini |

===== Analog_Bridge.ini =====

<code ini>

; Analog_Bridge configuration file.
;   This file should be placed in either /etc or it can be
;   supplied as a path on the Analog_Bridge command line.

; The best way to think of this file is that there are two main sections, the USRP (analog audio) and
; AMBE_AUDIO (compressed audio).  Analog_Bridge will take everything sent to the USRP port and
; encode it for transmission on the AMBE_AUDIO port.  The encoder will use the format defined in ambeMode.
; As you might expect, the reverse direction is defined too.

; Analog_Bridge supports include files. More on this later...
include = dvsm.macro
; include = asl.macro

; General Section describes settings for Analog_Bridge itself.
[GENERAL]
logLevel = 2                            ; Show messages and above 0=No logging, 1=Debug, 2=Message, 3=Info, 4=Warning, 5=Error, 6=Fatal

; Metadata management
exportMetadata = true                   ; Export metadata to USRP partner (transcode setups require this)
transferRootDir = /tmp			; Export database files to USRP partner
subscriberFile = /var/lib/dvswitch/subscriber_ids.csv   ; DMR ID to callsign lookup data

; General vocoder setup information
decoderFallBack = true                  ; Allow software AMBE decoding if a hardware decoder is not found
useEmulator = true                     ; Use the MD380 AMBE emulator for AMBE72 (DMR/YSFN/NXDN)
emulatorAddress = 127.0.0.1:2470        ; IP address and port of the md380 server

pcmPort = 2222				; UDP port to send to the WebProxy

; Information for xx_Bridge (Where xx is MMDVM, Quantar, HB, IPSC)
[AMBE_AUDIO]
address = 127.0.0.1                     ; IP address of xx_Bridge
; For DMR - set in DVSwitch.ini
;txPort = 31103                          ; Transmit TLV frames to partner on this port
;rxPort = 31100                          ; Listen for TLV frames from partner on this port

; FOr NXDN - set in DVSwitch.ini
txPort = 33103                          ; Transmit TLV frames to partner on this port
rxPort = 33100                          ; Listen for TLV frames from partner on this port
ambeMode = NXDN                          ; DMR, DMR_IPSC, DSTAR, NXDN, P25, YSFN, YSFW (encode PCM to this format)
minTxTimeMS = 2500                      ; Analog -> Digital Minimum time in MS for hang delay (0-10000)

; The metadata below is used when ASL is the source since it does not have any concept of digital modes
gatewayDmrId = 2354429                  ; ID to use when transmitting from Analog_Bridge 7 digit ID
repeaterID = 235442998                  ; ID of source repeater 7 digit ID plus 2 digit SSID 
; Talkgroup needed for DMR and NXDN.
; NXDNGateway uses Talkgroup to choose the reflector IP/Port from its Host Files
txTg = 23551                        ; TG to use for all frames sent from Analog_Bridge -> xx_Bridge
txTs = 2                                ; Slot to use for frames sent from Analog_Bridge -> xx_Bridge
colorCode = 1                           ; Color Code to assign DMR frames

; Information for USRP channel driver.  This interface uses PCM to transfer audio information
; There are two typical configurations, ASL and Transcode.  ASL (AllstarLink) is for analog clients connected
; to a digital network.  Transcode is when Analog_Bridge actually points its PCM interfaces back at itself, 
; causing a TLV <-- (pcm <--> pcm) --> TLV type of architecture.
;   When using ASL, this matches the rpt.conf ASL file with a setting like:
;   rxchannel = usrp/127.0.0.1:34001:32001
;   When Transcoding, make two ini files and set txPort equal to the other instance rxPort (crossover).  Launch
;   each instance with its own ini file.
[USRP]
address = 127.0.0.1                     ; IP address of USRP partner (Analog_Reflector, Allstar/Asterisk or another Analog_Bridge)
txPort = 31001                          ; Transmit USRP frames on this port
rxPort = 34001                          ; Listen for USRP frames on this port
usrpAudio = AUDIO_USE_GAIN                 ; Digital -> Analog (AUDIO_UNITY, AUDIO_USE_GAIN, AUDIO_USE_AGC)
usrpGain = 5.0                         ; Gain factor when usrpAudio = AUDIO_USE_GAIN (0.0 to 5.0) (1.0 = AUDIO_UNITY)
usrpAGC = -20,10,100                    ; Set the agc threshold (db), slope (db) and decay (ms)
tlvAudio = AUDIO_USE_GAIN                  ; Analog -> Digital (AUDIO_UNITY, AUDIO_USE_GAIN, AUDIO_BPF)
tlvGain = 1.0                          ; Gain factor when tlvAudio = AUDIO_USE_GAIN (0.0 to 5.0) (1.0 = AUDIO_UNITY)

[MACROS]

; Where the macros are
; xxxx=yyyy
; xxxx is the dial string to match
; yyyy is the command line to execute

; xxxx must be preceded by a *
; xxxx can be any string (alphanumeric)
; yyyy is the command to execute
; yyyy will replace xxxx in the dial string
; arguments follow the macro name with a # delimiter

; For example using macro "5678" above would look like:
; *5678#9876

; Which would invoke:
; echo 9876

; Information for DV3000 hardware decoder
;   There are two configuration modes: IP (AMBEServer) and serial (direct connect hardware)
;   Use top server and port if using AMBEServer
;   Use bottom server/port and serial = true if using the DV3000u (thumbdv)
;   Did you run AMBETest4.py before using this?
[DV3000]
address = 127.0.0.1                   ; IP address of AMBEServer
rxPort = 2460                         ; Port of AMBEServer
; address = /dev/ttyUSB0              ; Device of DV3000U on this machine
; baud = 460800                       ; Baud rate of the dongle (230400 or 460800)
; serial = true                       ; Use serial=true for direct connect or serial=false for AMBEServer


</code>

++++


--- //John Pumford-Green 10/06/25 08:51 BST//


===== Further Information =====


{{tag>radio AllStar dvswitch nxdn}}
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