====Configuration for Transponder or links====


Every logic start with this line:**LOGICS=RepeaterLogic,IntercomLogic**
You find in svxlink.conf the configuration for receivers Rx1,Rx2 and transmitters Tx1,Tx2

First you need to create **IntercomLogic.tcl** file

Go to the specific directory:

**cd /usr/share/svxlink/events.d/**

Duplicate the file SimplexLogic.tcl into IntercomLogic.tcl

**sudo cp SimplexLogic.tcl IntercomLogic.tcl**

**ls** to check if the file is here and write correctly.

Edit the file IntercomLogic.tcl
**sudo nano IntercomLogic.tcl**

Modify the name of namespace: namespace eval IntercomLogic (line 12)


<note> Beyond 3 radio the Raspberry starts to have hardware limits, the sound is strongly degraded.</note>

Edit svxlink.conf and modify same this sample **sudo nano /etc/svxlink/svxlink.conf**

<code python | svxlink.conf>
###############################################################################
#                                                                             #
#                Configuration file for the SvxLink server                    #
#                                                                             #
###############################################################################

[GLOBAL]
#MODULE_PATH=/usr/lib/arm-linux-gnueabihf/svxlink
LOGICS=RepeaterLogic,IntercomLogic
CFG_DIR=svxlink.d
TIMESTAMP_FORMAT="%c"
CARD_SAMPLE_RATE=16000
#CARD_CHANNELS=1
#LOCATION_INFO=LocationInfo
LINKS=IntercomLink


[RepeaterLogic]
TYPE=Repeater
RX=Rx1
TX=Tx1
#MODULES=ModuleHelp,ModuleParrot,ModuleEchoLink,ModuleTclVoiceMail
MODULES=ModuleHelp,ModuleParrot
CALLSIGN=F1ZKA
SHORT_IDENT_INTERVAL=15
LONG_IDENT_INTERVAL=60
#IDENT_ONLY_AFTER_TX=4
#EXEC_CMD_ON_SQL_CLOSE=500
EVENT_HANDLER=/usr/share/svxlink/events.tcl
DEFAULT_LANG=fr_FR
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
IDLE_TIMEOUT=15
OPEN_ON_1750=500
#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

[IntercomLogic]
TYPE=Simplex
RX=Rx2
TX=Tx2
MODULES=ModuleHelp,ModuleMetarInfo,ModuleParrot
CALLSIGN=F5XYZ
SHORT_IDENT_INTERVAL=15
LONG_IDENT_INTERVAL=60
EVENT_HANDLER=/usr/share/svxlink/events.tcl
DEFAULT_LANG=fr_FR
RGR_SOUND_DELAY=0
MACROS=Macros
FX_GAIN_NORMAL=0
FX_GAIN_LOW=-12
ONLINE_CMD=123456789
#MUTE_RX_ON_TX=1
#MUTE_TX_ON_RX=1

[IntercomLink]
CONNECT_LOGICS=RepeaterLogic,IntercomLogic:99
DEFAULT_ACTIVE=1

[Macros]
1=EchoLink:9999#
9=Parrot:0123456789#
03400=EchoLink:9999#

[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

[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
AUDIO_CHANNEL=0
SQL_DET=GPIO
SQL_START_DELAY=0
SQL_DELAY=0
SQL_HANGTIME=0
#SQL_EXTENDED_HANGTIME=1000
#SQL_EXTENDED_HANGTIME_THRESH=15
#SQL_TIMEOUT=600
#VOX_FILTER_DEPTH=20
#VOX_THRESH=1000
#CTCSS_MODE=2
#CTCSS_FQ=136.5
#CTCSS_SNR_OFFSET=0
#CTCSS_OPEN_THRESH=15
#CTCSS_CLOSE_THRESH=9
#CTCSS_BPF_LOW=60
#CTCSS_BPF_HIGH=270
#SERIAL_PORT=/dev/ttyS0
#SERIAL_PIN=CTS
#SERIAL_SET_PINS=DTR!RTS
#EVDEV_DEVNAME=/dev/input/by-id/usb-SYNIC_SYNIC_Wireless_Audio-event-if03
#EVDEV_OPEN=1,163,1
#EVDEV_CLOSE=1,163,0
GPIO_SQL_PIN=gpio19
#PTY_PATH=/tmp/rx1_sql
#HID_DEVICE=/dev/hidraw3
#HID_SQL_PIN=VOL_UP
#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=0
#SQL_TAIL_ELIM=300
#PREAMP=6
PEAK_METER=1
DTMF_DEC_TYPE=INTERNAL
DTMF_MUTING=1
DTMF_HANGTIME=100
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
#AUDIO_DEV=alsa:plug:plugequal
AUDIO_CHANNEL=0
PTT_TYPE=GPIO
#PTT_PORT=/dev/ttyS0
PTT_PIN=gpio16
#HID_DEVICE=/dev/hidraw3
#HID_PTT_PIN=GPIO3
#SERIAL_SET_PINS=DTR!RTS
#PTT_HANGTIME=1000
TIMEOUT=300
TX_DELAY=10
#CTCSS_FQ=136.5
#CTCSS_LEVEL=9
PREEMPHASIS=0
DTMF_TONE_LENGTH=100
DTMF_TONE_SPACING=50
DTMF_DIGIT_PWR=-15
#MASTER_GAIN=0.0

[Rx2]
TYPE=Local
AUDIO_DEV=alsa:plughw:1
AUDIO_CHANNEL=0
SQL_DET=GPIO
GPIO_SQL_PIN=gpio18
SQL_START_DELAY=60
SQL_DELAY=0
SQL_HANGTIME=2000
SQL_TIMEOUT=300
DEEMPHASIS=0
#SQL_TAIL_ELIM=0
PREAMP=0
PEAK_METER=1
DTMF_DEC_TYPE=INTERNAL
DTMF_MUTING=1
DTMF_HANGTIME=100
#1750_MUTING=0

[Tx2]
TYPE=Local
AUDIO_DEV=alsa:plughw:1
AUDIO_CHANNEL=0
PTT_TYPE=GPIO
PTT_PIN=gpio17
#PTT_HANGTIME=1000
TIMEOUT=600
TX_DELAY=10
PREEMPHASIS=0
DTMF_TONE_LENGTH=100
DTMF_TONE_SPACING=50
DTMF_DIGIT_PWR=-15



[LocationInfo]
APRS_SERVER_LIST=euro.aprs2.net:14580
#STATUS_SERVER_LIST=aprs.echolink.org:5199
#LON_POSITION=12.10.00E
#LAT_POSITION=51.10.00N
#CALLSIGN=EL-DL0ABC
#FREQUENCY=438.875
#TX_POWER=8
#ANTENNA_GAIN=6
#ANTENNA_HEIGHT=20m
#ANTENNA_DIR=-1
PATH=WIDE1-1
BEACON_INTERVAL=10
#TONE=136
COMMENT=SvxLink by SM0SVX (svxlink.sourceforge.net)
</code>

Find an additional article on the site F8ASB.COM http://blog.f8asb.com/2017/09/23/svxlink-vers-une-solution-intercom-1ere-partie/