Svxlink & Echolink

Revisiting the Analogue FM Voice Gateway

Svxlink Gateway Initial Setup

Trying not to re-invent the wheel

find saved Pi Image File for a previous Svxlink system
copy to a new SD Card and boot a spare Raspberry Pi with it
find and connect a modified CM108 sound-dongle - has PTT and SQL via the dongle's own GPIO
connect to 2m FM radio and test initial config
make any necessary config changes - e.g. MB7AZE → GM4SLV
set up audio levels using devcal
change to 9600 packet interface on 2m radio to remove radio pre/de emphasis and apply pre/de emphasis in Svxlink
set up audio levels again using devcal
Check connectivity to Echolink
- remember to Port Forward on ADSL router : UDP 5198 & 5199 → svxlink Pi's IP address
- consider using a private proxy on my VPS instead? Java JRE and Echolink Proxy

Pi Image File handling

Devcal

devcal
remember to sudo killall svxlink to ensure no daemon svxlink processes are running in the background
remember to adjust path to valid svxlink.conf file which will be different to this old example
Set for 3kHz deviation
remember to edit the config file(s) to change the RX Pre-amp and TX Master Gain settings to match those find using Deval

sudo devcal -r -m=3000 -d=3000 /etc/svxlink/svxlink_noel.conf Rx1

sudo devcal -t -m=3000 -d=3000 /etc/svxlink/svxlink_noel.conf Tx1

add the PRE_AMP and MASTER_GAIN settings to both svxlink_el.conf and svxlink_noel.conf

Config Files

One for Echolink Enabled
One for Echolink Disabled
Switch Echolink on/off via DTMF commands
- Edit Logic.tcl to give this functionality

/etc/svxlink/svxlink_el.conf

###############################################################################
#                                                                             #
#                Configuration file for the SvxLink server                    #
#                                                                             #
###############################################################################
 
[GLOBAL]
#MODULE_PATH=/usr/lib/arm-linux-gnueabihf/svxlink
LOGICS=SimplexLogic
CFG_DIR=svxlink.d
TIMESTAMP_FORMAT="%c"
CARD_SAMPLE_RATE=48000
#CARD_CHANNELS=1
#LOCATION_INFO=LocationInfo
#LINKS=LinkToR4
 
[SimplexLogic]
TYPE=Simplex
RX=Rx1
TX=Tx1
MODULES=ModuleHelp,ModuleEchoLink,ModuleParrot
CALLSIGN=GM4SLV
SHORT_IDENT_INTERVAL=15
SHORT_CW_ID_ENABLE=1
SHORT_VOICE_ID_ENABLE=0
CW_AMP=-10
CW_PITCH=800
CW_WPM=20
LONG_IDENT_INTERVAL=60
#IDENT_ONLY_AFTER_TX=4
#EXEC_CMD_ON_SQL_CLOSE=500
EVENT_HANDLER=/usr/local/share/svxlink/events.tcl
DEFAULT_LANG=en_US
RGR_SOUND_DELAY=0
#REPORT_CTCSS=77.0
#TX_CTCSS=ALWAYS
MACROS=Macros
FX_GAIN_NORMAL=0
FX_GAIN_LOW=-12
#ACTIVATE_MODULE_ON_LONG_CMD=4:EchoLink
#QSO_RECORDER=8:QsoRecorder
ONLINE_CMD=998877
#MUTE_RX_ON_TX=1
#MUTE_TX_ON_RX=1
#STATE_PTY=/var/run/svxlink/state
#DTMF_CTRL_PTY=/dev/shm/simplex_dtmf_ctrl
TIME_FORMAT=24
RGR_SOUND_ALWAYS=1
 
[RepeaterLogic]
TYPE=Repeater
RX=Rx1
TX=Tx1
MODULES=ModuleHelp,ModuleParrot,ModuleEchoLink,ModuleTclVoiceMail
CALLSIGN=MYCALL
SHORT_IDENT_INTERVAL=10
LONG_IDENT_INTERVAL=60
#IDENT_ONLY_AFTER_TX=4
#EXEC_CMD_ON_SQL_CLOSE=500
EVENT_HANDLER=/usr/share/svxlink/events.tcl
DEFAULT_LANG=en_US
RGR_SOUND_DELAY=0
REPORT_CTCSS=136.5
#TX_CTCSS=SQL_OPEN
MACROS=Macros
#SEL5_MACRO_RANGE=03400,03499
FX_GAIN_NORMAL=0
FX_GAIN_LOW=-12
#QSO_RECORDER=8:QsoRecorder
#NO_REPEAT=1
IDLE_TIMEOUT=30
OPEN_ON_1750=1000
#OPEN_ON_CTCSS=136:2000
#OPEN_ON_DTMF=*
#OPEN_ON_SQL=5000
#OPEN_ON_SEL5=01234
#OPEN_SQL_FLANK=OPEN
#OPEN_ON_SQL_AFTER_RPT_CLOSE=10
IDLE_SOUND_INTERVAL=3000
#SQL_FLAP_SUP_MIN_TIME=1000
#SQL_FLAP_SUP_MAX_COUNT=10
#ACTIVATE_MODULE_ON_LONG_CMD=4:EchoLink
#IDENT_NAG_TIMEOUT=15
#IDENT_NAG_MIN_TIME=2000
#ONLINE_CMD=998877
#STATE_PTY=/var/run/svxlink/state
#DTMF_CTRL_PTY=/dev/shm/repeater_dtmf_ctrl
 
[ReflectorLogic]
TYPE=Reflector
HOST=reflector.example.com
#PORT=5300
CALLSIGN="MYCALL"
AUTH_KEY="Change this key now!"
#JITTER_BUFFER_DELAY=0
 
[LinkToR4]
CONNECT_LOGICS=RepeaterLogic:94:SK3AB,SimplexLogic:92:SK3CD
#DEFAULT_ACTIVE=1
TIMEOUT=300
#AUTOACTIVATE_ON_SQL=RepeaterLogic
 
 
[QsoRecorder]
REC_DIR=/var/spool/svxlink/qso_recorder
#MIN_TIME=1000
MAX_TIME=3600
SOFT_TIME=300
MAX_DIRSIZE=1024
#DEFAULT_ACTIVE=1
#TIMEOUT=300
#QSO_TIMEOUT=300
#ENCODER_CMD=/usr/bin/oggenc -Q \"%f\" && rm \"%f\"
 
[Voter]
TYPE=Voter
RECEIVERS=Rx1,Rx2,Rx3
VOTING_DELAY=200
BUFFER_LENGTH=0
#REVOTE_INTERVAL=1000
#HYSTERESIS=50
#SQL_CLOSE_REVOTE_DELAY=500
#RX_SWITCH_DELAY=500
#COMMAND_PTY=/dev/shm/voter_ctrl
 
[MultiTx]
TYPE=Multi
TRANSMITTERS=Tx1,Tx2,Tx3
 
[NetRx]
TYPE=Net
HOST=remote.rx.host
TCP_PORT=5210
#LOG_DISCONNECTS_ONCE=0
AUTH_KEY="Change this key now!"
CODEC=S16
#SPEEX_ENC_FRAMES_PER_PACKET=4
#SPEEX_ENC_QUALITY=4
#SPEEX_ENC_BITRATE=15000
#SPEEX_ENC_COMPLEXITY=2
#SPEEX_ENC_VBR=0
#SPEEX_ENC_VBR_QUALITY=4
#SPEEX_ENC_ABR=15000
#SPEEX_DEC_ENHANCER=1
#OPUS_ENC_FRAME_SIZE=20
#OPUS_ENC_COMPLEXITY=10
#OPUS_ENC_BITRATE=20000
#OPUS_ENC_VBR=1
 
[NetTx]
TYPE=Net
HOST=remote.tx.host
TCP_PORT=5210
#LOG_DISCONNECTS_ONCE=0
AUTH_KEY="Change this key now!"
CODEC=S16
#SPEEX_ENC_FRAMES_PER_PACKET=4
#SPEEX_ENC_QUALITY=4
#SPEEX_ENC_BITRATE=15000
#SPEEX_ENC_COMPLEXITY=2
#SPEEX_ENC_VBR=0
#SPEEX_ENC_VBR_QUALITY=4
#SPEEX_ENC_ABR=15000
#SPEEX_DEC_ENHANCER=1
#OPUS_ENC_FRAME_SIZE=20
#OPUS_ENC_COMPLEXITY=10
#OPUS_ENC_BITRATE=20000
#OPUS_ENC_VBR=1
 
[Rx1]
TYPE=Local
AUDIO_DEV=alsa:plughw:1,0
AUDIO_CHANNEL=0
SQL_DET=HIDRAW
SQL_START_DELAY=0
SQL_DELAY=0
SQL_HANGTIME=200
#SQL_EXTENDED_HANGTIME=1000
#SQL_EXTENDED_HANGTIME_THRESH=15
#SQL_TIMEOUT=600
VOX_FILTER_DEPTH=20
VOX_THRESH=1000
#CTCSS_MODE=2
CTCSS_FQ=77.0
#CTCSS_SNR_OFFSET=0
#CTCSS_OPEN_THRESH=15
#CTCSS_CLOSE_THRESH=9
#CTCSS_BPF_LOW=60
#CTCSS_BPF_HIGH=270
#SERIAL_PORT=/dev/ttyUSB0
#SERIAL_PIN=CTS
#SERIAL_SET_PINS=
#EVDEV_DEVNAME=/dev/input/by-id/usb-SYNIC_SYNIC_Wireless_Audio-event-if03
#EVDEV_OPEN=1,163,1
#EVDEV_CLOSE=1,163,0
#GPIO_PATH=/sys/class/gpio
#GPIO_SQL_PIN=gpio25
#PTY_PATH=/tmp/rx1_sql
HID_DEVICE=/dev/hidraw0
HID_SQL_PIN=!VOL_DN
#SIGLEV_DET=TONE
SIGLEV_SLOPE=1
SIGLEV_OFFSET=0
#SIGLEV_BOGUS_THRESH=120
#TONE_SIGLEV_MAP=100,84,60,50,37,32,28,23,19,8
SIGLEV_OPEN_THRESH=30
SIGLEV_CLOSE_THRESH=10
DEEMPHASIS=1
#SQL_TAIL_ELIM=300
PREAMP=-1.5
#PEAK_METER=1
DTMF_DEC_TYPE=INTERNAL
DTMF_MUTING=1
DTMF_HANGTIME=40
DTMF_SERIAL=/dev/ttyS0
#DTMF_PTY=/tmp/rx1_dtmf
#DTMF_MAX_FWD_TWIST=8
#DTMF_MAX_REV_TWIST=4
#1750_MUTING=1
#SEL5_DEC_TYPE=INTERNAL
#SEL5_TYPE=ZVEI1
#FQ=433475000
#MODULATION=FM
#WBRX=WbRx1
 
[WbRx1]
#TYPE=RtlUsb
#DEV_MATCH=0
#HOST=localhost
#PORT=1234
#CENTER_FQ=435075000
#FQ_CORR=0
#GAIN=0
#PEAK_METER=1
#SAMPLE_RATE=960000
 
[Tx1]
TYPE=Local
AUDIO_DEV=alsa:plughw:1,0
AUDIO_CHANNEL=0
PTT_TYPE=Hidraw
#PTT_PORT=/dev/ttyS0
#PTT_PIN=HIDRAW
HID_DEVICE=/dev/hidraw0
HID_PTT_PIN=GPIO3
#SERIAL_SET_PINS=DTR!RTS
#GPIO_PATH=/sys/class/gpio
#PTT_HANGTIME=1000
TIMEOUT=300
TX_DELAY=500
#CTCSS_FQ=136.5
#CTCSS_LEVEL=9
PREEMPHASIS=1
DTMF_TONE_LENGTH=100
DTMF_TONE_SPACING=50
DTMF_DIGIT_PWR=-15
MASTER_GAIN=-1.25
 
[LocationInfo]
#APRS_SERVER_LIST=euro.aprs2.net:14580
STATUS_SERVER_LIST=aprs.echolink.org:5199
LON_POSITION=1.25.30W
LAT_POSITION=60.17.18N
CALLSIGN=EL-GM4SLV
FREQUENCY=144.912
TX_POWER=5
ANTENNA_GAIN=0
ANTENNA_HEIGHT=2m
ANTENNA_DIR=-1
#PATH=WIDE1-1
BEACON_INTERVAL=10
STATISTICS_INTERVAL=10
TONE=0
COMMENT=SvxLink
 
[Macros]
1=EchoLink:9999#
2=EchoLink:973498#
3=EchoLink:662666#

/etc/svxlink/svxlink_noel.conf

###############################################################################
#                                                                             #
#                Configuration file for the SvxLink server                    #
#                                                                             #
###############################################################################
 
[GLOBAL]
#MODULE_PATH=/usr/lib/arm-linux-gnueabihf/svxlink
LOGICS=SimplexLogic
CFG_DIR=svxlink.d
TIMESTAMP_FORMAT="%c"
CARD_SAMPLE_RATE=48000
#CARD_CHANNELS=1
#LOCATION_INFO=LocationInfo
#LINKS=LinkToR4
 
[SimplexLogic]
TYPE=Simplex
RX=Rx1
TX=Tx1
MODULES=ModuleHelp,ModuleParrot
CALLSIGN=GM4SLV
SHORT_IDENT_INTERVAL=15
SHORT_CW_ID_ENABLE=1
SHORT_VOICE_ID_ENABLE=0
CW_AMP=-10
CW_PITCH=800
CW_WPM=20
LONG_IDENT_INTERVAL=60
#IDENT_ONLY_AFTER_TX=4
#EXEC_CMD_ON_SQL_CLOSE=500
EVENT_HANDLER=/usr/local/share/svxlink/events.tcl
DEFAULT_LANG=en_GB
RGR_SOUND_DELAY=0
#REPORT_CTCSS=77.0
#TX_CTCSS=ALWAYS
MACROS=Macros
FX_GAIN_NORMAL=0
FX_GAIN_LOW=-12
#ACTIVATE_MODULE_ON_LONG_CMD=4:EchoLink
#QSO_RECORDER=8:QsoRecorder
ONLINE_CMD=998877
#MUTE_RX_ON_TX=1
#MUTE_TX_ON_RX=1
#STATE_PTY=/var/run/svxlink/state
#DTMF_CTRL_PTY=/dev/shm/simplex_dtmf_ctrl
TIME_FORMAT=24
RGR_SOUND_ALWAYS=1
 
[RepeaterLogic]
TYPE=Repeater
RX=Rx1
TX=Tx1
MODULES=ModuleHelp,ModuleParrot,ModuleEchoLink,ModuleTclVoiceMail
CALLSIGN=MYCALL
SHORT_IDENT_INTERVAL=10
LONG_IDENT_INTERVAL=60
#IDENT_ONLY_AFTER_TX=4
#EXEC_CMD_ON_SQL_CLOSE=500
EVENT_HANDLER=/usr/share/svxlink/events.tcl
DEFAULT_LANG=en_US
RGR_SOUND_DELAY=0
REPORT_CTCSS=136.5
#TX_CTCSS=SQL_OPEN
MACROS=Macros
#SEL5_MACRO_RANGE=03400,03499
FX_GAIN_NORMAL=0
FX_GAIN_LOW=-12
#QSO_RECORDER=8:QsoRecorder
#NO_REPEAT=1
IDLE_TIMEOUT=30
OPEN_ON_1750=1000
#OPEN_ON_CTCSS=136:2000
#OPEN_ON_DTMF=*
#OPEN_ON_SQL=5000
#OPEN_ON_SEL5=01234
#OPEN_SQL_FLANK=OPEN
#OPEN_ON_SQL_AFTER_RPT_CLOSE=10
IDLE_SOUND_INTERVAL=3000
#SQL_FLAP_SUP_MIN_TIME=1000
#SQL_FLAP_SUP_MAX_COUNT=10
#ACTIVATE_MODULE_ON_LONG_CMD=4:EchoLink
#IDENT_NAG_TIMEOUT=15
#IDENT_NAG_MIN_TIME=2000
#ONLINE_CMD=998877
#STATE_PTY=/var/run/svxlink/state
#DTMF_CTRL_PTY=/dev/shm/repeater_dtmf_ctrl
 
[ReflectorLogic]
TYPE=Reflector
HOST=reflector.example.com
#PORT=5300
CALLSIGN="MYCALL"
AUTH_KEY="Change this key now!"
#JITTER_BUFFER_DELAY=0
 
[LinkToR4]
CONNECT_LOGICS=RepeaterLogic:94:SK3AB,SimplexLogic:92:SK3CD
#DEFAULT_ACTIVE=1
TIMEOUT=300
#AUTOACTIVATE_ON_SQL=RepeaterLogic
 
 
[QsoRecorder]
REC_DIR=/var/spool/svxlink/qso_recorder
#MIN_TIME=1000
MAX_TIME=3600
SOFT_TIME=300
MAX_DIRSIZE=1024
#DEFAULT_ACTIVE=1
#TIMEOUT=300
#QSO_TIMEOUT=300
#ENCODER_CMD=/usr/bin/oggenc -Q \"%f\" && rm \"%f\"
 
[Voter]
TYPE=Voter
RECEIVERS=Rx1,Rx2,Rx3
VOTING_DELAY=200
BUFFER_LENGTH=0
#REVOTE_INTERVAL=1000
#HYSTERESIS=50
#SQL_CLOSE_REVOTE_DELAY=500
#RX_SWITCH_DELAY=500
#COMMAND_PTY=/dev/shm/voter_ctrl
 
[MultiTx]
TYPE=Multi
TRANSMITTERS=Tx1,Tx2,Tx3
 
[NetRx]
TYPE=Net
HOST=remote.rx.host
TCP_PORT=5210
#LOG_DISCONNECTS_ONCE=0
AUTH_KEY="Change this key now!"
CODEC=S16
#SPEEX_ENC_FRAMES_PER_PACKET=4
#SPEEX_ENC_QUALITY=4
#SPEEX_ENC_BITRATE=15000
#SPEEX_ENC_COMPLEXITY=2
#SPEEX_ENC_VBR=0
#SPEEX_ENC_VBR_QUALITY=4
#SPEEX_ENC_ABR=15000
#SPEEX_DEC_ENHANCER=1
#OPUS_ENC_FRAME_SIZE=20
#OPUS_ENC_COMPLEXITY=10
#OPUS_ENC_BITRATE=20000
#OPUS_ENC_VBR=1
 
[NetTx]
TYPE=Net
HOST=remote.tx.host
TCP_PORT=5210
#LOG_DISCONNECTS_ONCE=0
AUTH_KEY="Change this key now!"
CODEC=S16
#SPEEX_ENC_FRAMES_PER_PACKET=4
#SPEEX_ENC_QUALITY=4
#SPEEX_ENC_BITRATE=15000
#SPEEX_ENC_COMPLEXITY=2
#SPEEX_ENC_VBR=0
#SPEEX_ENC_VBR_QUALITY=4
#SPEEX_ENC_ABR=15000
#SPEEX_DEC_ENHANCER=1
#OPUS_ENC_FRAME_SIZE=20
#OPUS_ENC_COMPLEXITY=10
#OPUS_ENC_BITRATE=20000
#OPUS_ENC_VBR=1
 
[Rx1]
TYPE=Local
AUDIO_DEV=alsa:plughw:1,0
AUDIO_CHANNEL=0
SQL_DET=HIDRAW
SQL_START_DELAY=0
SQL_DELAY=0
SQL_HANGTIME=200
#SQL_EXTENDED_HANGTIME=1000
#SQL_EXTENDED_HANGTIME_THRESH=15
#SQL_TIMEOUT=600
VOX_FILTER_DEPTH=20
VOX_THRESH=1000
#CTCSS_MODE=2
CTCSS_FQ=77.0
#CTCSS_SNR_OFFSET=0
#CTCSS_OPEN_THRESH=15
#CTCSS_CLOSE_THRESH=9
#CTCSS_BPF_LOW=60
#CTCSS_BPF_HIGH=270
#SERIAL_PORT=/dev/ttyUSB0
#SERIAL_PIN=CTS
#SERIAL_SET_PINS=
#EVDEV_DEVNAME=/dev/input/by-id/usb-SYNIC_SYNIC_Wireless_Audio-event-if03
#EVDEV_OPEN=1,163,1
#EVDEV_CLOSE=1,163,0
#GPIO_PATH=/sys/class/gpio
#GPIO_SQL_PIN=gpio25
#PTY_PATH=/tmp/rx1_sql
HID_DEVICE=/dev/hidraw0
HID_SQL_PIN=!VOL_DN
#SIGLEV_DET=TONE
SIGLEV_SLOPE=1
SIGLEV_OFFSET=0
#SIGLEV_BOGUS_THRESH=120
#TONE_SIGLEV_MAP=100,84,60,50,37,32,28,23,19,8
SIGLEV_OPEN_THRESH=30
SIGLEV_CLOSE_THRESH=10
DEEMPHASIS=1
#SQL_TAIL_ELIM=300
PREAMP=-1.5
#PEAK_METER=1
DTMF_DEC_TYPE=INTERNAL
DTMF_MUTING=1
DTMF_HANGTIME=40
DTMF_SERIAL=/dev/ttyS0
#DTMF_PTY=/tmp/rx1_dtmf
#DTMF_MAX_FWD_TWIST=8
#DTMF_MAX_REV_TWIST=4
#1750_MUTING=1
#SEL5_DEC_TYPE=INTERNAL
#SEL5_TYPE=ZVEI1
#FQ=433475000
#MODULATION=FM
#WBRX=WbRx1
 
[WbRx1]
#TYPE=RtlUsb
#DEV_MATCH=0
#HOST=localhost
#PORT=1234
#CENTER_FQ=435075000
#FQ_CORR=0
#GAIN=0
#PEAK_METER=1
#SAMPLE_RATE=960000
 
[Tx1]
TYPE=Local
AUDIO_DEV=alsa:plughw:1,0
AUDIO_CHANNEL=0
PTT_TYPE=Hidraw
#PTT_PORT=/dev/ttyS0
#PTT_PIN=HIDRAW
HID_DEVICE=/dev/hidraw0
HID_PTT_PIN=GPIO3
#SERIAL_SET_PINS=DTR!RTS
#GPIO_PATH=/sys/class/gpio
#PTT_HANGTIME=1000
TIMEOUT=300
TX_DELAY=500
#CTCSS_FQ=136.5
#CTCSS_LEVEL=9
PREEMPHASIS=1
DTMF_TONE_LENGTH=100
DTMF_TONE_SPACING=50
DTMF_DIGIT_PWR=-15
MASTER_GAIN=-1.25
 
[LocationInfo]
APRS_SERVER_LIST=euro.aprs2.net:14580
STATUS_SERVER_LIST=aprs.echolink.org:5199
LON_POSITION=1.25.30W
LAT_POSITION=60.17.18N
CALLSIGN=EL-GM4SLV
FREQUENCY=144.9125
TX_POWER=1
ANTENNA_GAIN=0
ANTENNA_HEIGHT=1m
ANTENNA_DIR=-1
#PATH=WIDE1-1
#BEACON_INTERVAL=60
TONE=77
COMMENT=SvxLink by SM0SVX (www.svxlink.org)
 
[Macros]
1=EchoLink:9999#
2=EchoLink:973498#
3=EchoLink:662666#

/etc/svxlink/svxlink.d/ModuleEchoLink.conf

[ModuleEchoLink]
NAME=EchoLink
ID=2
TIMEOUT=60
#ALLOW_IP=192.168.1.0/24
#DROP_INCOMING=^()$
#REJECT_INCOMING=^()$
#ACCEPT_INCOMING=^(.*)$
#REJECT_OUTGOING=^()$
#ACCEPT_OUTGOING=^(.*)$
#REJECT_CONF=0
#CHECK_NR_CONNECTS=2,300,120
SERVERS=servers.echolink.org
CALLSIGN=GM4SLV-L
PASSWORD=XXXXXXXXX
SYSOPNAME=John
LOCATION=[Svx] Shetland
PROXY_SERVER=my.vps.host.name
PROXY_PORT=8100
PROXY_PASSWORD=my_proxy_password
#BIND_ADDR=10.20.30.40
MAX_QSOS=5
MAX_CONNECTIONS=6
LINK_IDLE_TIMEOUT=900
#AUTOCON_ECHOLINK_ID=9999
#AUTOCON_TIME=1200
#USE_GSM_ONLY=1
#DEFAULT_LANG=en_US
#COMMAND_PTY=/dev/shm/echolink_ctrl
DESCRIPTION="You have connected to a SvxLink node,\n"

/usr/local/share/svxlink/events.d/local

Edit the section proc dtmf_cmd_received {cmd} to add the stanzas that run external bash scripts to stop and restart svxlink with different config files

#
# Executed when a DTMF command has been received
#   cmd - The command
#
# Return 1 to hide the command from further processing is SvxLink or
# return 0 to make SvxLink continue processing as normal.
#
# This function can be used to implement your own custom commands or to disable
# DTMF commands that you do not want users to execute.
proc dtmf_cmd_received {cmd} {
  #global active_module

  # Example: Ignore all commands starting with 3 in the EchoLink module.
  #          Allow commands that have four or more digits.
  #if {$active_module == "EchoLink"} {
  #  if {[string length $cmd] < 4 && [string index $cmd 0] == "3"} {
  #    puts "Ignoring random connect command for module EchoLink: $cmd"
  #    return 1
  #  }
  #}

  # Handle the "force core command" mode where a command is forced to be
  # executed by the core command processor instead of by an active module.
  # The "force core command" mode is entered by prefixing a command by a star.
  #if {$active_module != "" && [string index $cmd 0] != "*"} {
  #  return 0
  #}
  #if {[string index $cmd 0] == "*"} {
  #  set cmd [string range $cmd 1 end]
  #}

  # Example: Custom command executed when DTMF 99 is received
  if {$cmd == "99"} {
    puts "Executing external command"
    playMsg "Core" "online"
    exec /home/gm4slv/svx_noel.sh &
    return 1
  }
  # Example: Custom command executed when DTMF 99 is received
  if {$cmd == "98"} {
    puts "Executing external command"
    playMsg "Core" "online"
    exec /home/gm4slv/svx_el.sh &
    return 1
  }
 
  return 0
}

start with echolink : svx_el.sh

#!/bin/bash
 
CFG=/etc/svxlink/svxlink_el.conf
LOG=/home/gm4slv/svxlink.log
 
sudo killall svxlink
sudo killall svxlink
sudo killall svxlink
 
sudo svxlink --daemon --logfile=$LOG --config=$CFG
exit 0

start without echolink : svx_noel.sh

#!/bin/bash
 
CFG=/etc/svxlink/svxlink_noel.conf
LOG=/home/gm4slv/svxlink.log
 
sudo killall svxlink
sudo killall svxlink
sudo killall svxlink
 
sudo svxlink --daemon --logfile=$LOG --config=$CFG
exit 0

crontab entry to start with echolink enabled at boot time

@reboot sleep 30 && sudo -u gm4slv /home/gm4slv/svx_el.sh >/dev/null 2>&1

Catch up with git version

The version of svxlink running on this Pi was self-compiled from the GIT repository
- Update to latest version from GIT
I decided to pull & compile the latest version so I simply followed the instructions I'd put on the above wiki page and all went smoothly (if slowly)

DTMF Commands

Old info SVXLink : DTMF commands
Ignore Reflector commands - I am not (yet) connected to the SVX Reflector http://svxportal-uk.ddns.net:81/index.php

`*#`	System Status
`0#`	Help Module
`1#`	Parrot Module
`2#`	Echolink Module

`#`	De-activate module

Echolink Module

`<node number>#`	Connect to `<node number>`
`0#`	Play the help message
`1#`	List all connected stations
`2#`	Play local EchoLink node id
`31#`	Connect to a random link or repeater
`32#`	Connect to a random conference
`4#`	Reconnect to the last disconnected station
`50#`	Deactivate listen only mode
`51#`	Activate listen only mode
`6*#`	Use the connect by callsign feature
`#`	If connected = Disconnect, otherwise = Deactivate Echolink module

https://github.com/sm0svx/svxlink/wiki/ModuleEchoLink

Macros

`D1#`	Echolink	9999	Echotest
`D2#`	Echolink	973498	M0HOY-L	Hubnet
`D3#`	Echolink	662666	M0JKT-L	FreeStar

Sound files

use en_US when echolink is enabled
- this is also needed for reflector when it's re-enabled, as the US files also have the additional reflector sound samples
use en_GB when echolink is disable
easy to tell from status *# which is active!

Proxy

after consideration….
I decided to use my VPS-hosted echolink proxy
- remove port forwards on home router for UDP/5198 & UDP/5199
- open port TPC/8100 for only my home IP address on VPS
  - this means only one IP address can reach the Proxy on port TCP/8100
- open ports UDP/5198 & UDP/5199 for anywhere on VPS
- edit echolink proxy config on VPS to allow only GM4SLV-L to connect
  - this means only one callsign can connect to the proxy
- start proxy in a tmux session, using bash script on VPS
- edit ModuleEchoLink.conf on svxlink pi to use the proxy
- restart svx_el.sh

PROXY_SERVER=my.vps.host.name
PROXY_PORT=8100
PROXY_PASSWORD=xxxxxxxxx

— John Pumford-Green 06/04/24 07:09

LAST MODIFIED : 06/04/24 10:53 BST

Further Information

radio, svxlink

RF Eclectica Wiki

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