SVXLink

SVXLink sources

https://github.com/dl1hrc/svxlink/tree/tetra-contrib/ - Custom version that passes ISSIs through SVXReflector, it also has our patches applied to SVXReflector and ReflectorLogic.
https://github.com/sm0svx/svxlink/ - Original version

Note for owners of SVXLink nodes running TetraLogic

Please use latest version of SVXLink software.
Please use the same CALLSIGN in [ReflectorLogic] and [TetraLogic] to make our bridges pass talker ISSI correctly.

Note for owners of SVXReflector servers for TETRA

Please use latest version of SVXReflector (at least 16082023) software.
Reflector to Reflector links does not pass originating ISSI.

Administrating SVXLink bridges

Disclaimer about information bellow

DockStation is only available on the same host as TetraPack Core, so the target of following information in this article is a server administrator.
DockLogic is an external Logic module is supplied outside SVXLInk.

Modules

DockLogic.so - SVXLink Logic module that implements our own Dock IPC protocol, uses our own library CodecPack.so
DockLogic.tcl - Supplementary script, required by SVXLink

Environment variables

CODECPACK=/<path>/CodecPack.so

svxlink.conf

[GLOBAL]
MODULE_PATH=/opt/SVXLink/lib/svxlink
CFG_DIR=/opt/SVXLink/etc/svxlink/svxlink.d
LOGICS=DockLogic,ReflectorLogic
LINKS=Link
TIMESTAMP_FORMAT="%c"

# Should be always 8 KHz!
CARD_SAMPLE_RATE=8000

[DockLogic]
TYPE=Dock
RX=Rx1
TX=Tx1
CALLSIGN=<Node call, should be completely the same as ReflectorLogic has>
EVENT_HANDLER=/opt/SVXLink/share/svxlink/events.tcl

# TetraPack Core IPC socket path
SOCKET=/tmp/Dock-<TetraPack Core ID>
# GSSI at TetraPack Core
GSSI=<GSSI of talk group at TetraPack>
# Default ISSI (used when ISSI is unknown)
ISSI=9999

[Rx1]
TYPE=Dock

[Tx1]
TYPE=Dock
# Delay (in 60 ms frames) in bridged call start (SVXLink -> TetraPack), required for ISSI detection heuristics 
DELAY=5

[ReflectorLogic]
TYPE=Reflector
HOSTS=<SVXReflector's DNS/IP address>
CALLSIGN="<Node call>"
AUTH_KEY="<Key>"
UDP_HEARTBEAT_INTERVAL=5
DEFAULT_TG=<Bridged SVXReflector's TG>
MONITOR_TGS=<Bridged SVXReflector's TG>
EVENT_HANDLER=/opt/SVXLink/share/svxlink/events.tcl
MUTE_FIRST_TX_LOC=0
MUTE_FIRST_TX_REM=0

[Link]
CONNECT_LOGICS=DockLogic,ReflectorLogic
DEFAULT_ACTIVE=1
TIMEOUT=0