FeatureList - sm0svx/svxlink GitHub Wiki

These are the most important features of the SvxLink server application.

• Can act as a repeater controller or just operate on a simplex channel

• Plugin based system to load voice services into the SvxLink logic core

• DTMF controlled using a high performance software DTMF decoder or hardware based one

• DTMF anti-flutter mode to suppress multiple digit detection when mobile flutter is present or during weak-signal conditions

• A sound clip based system for announcements

• Periodic identification

• A script based (TCL) event handling system

• Possible to use left/right stereo channels as two mono channels

• Roger beep

• Trigger manual identification by pressing DTMF *# (different from short and long ident)

• A simple shortcut, or macro, subsystem

• Support for RTL2832U based DVB-T USB dongles for use as SDR (Software defined Radio) receivers

• Repeater logic specific features:

  • Multiple repeater activation modes: 1750 Hz tone burst, CTCSS, DTMF or squelch open.

  • The repeater can be configured to activate again on just squelch open directly after close.

  • Periodic "idle sound" when the repeater is up but no signal is being received

  • Announcements are mixed in with normal audio

  • The volume of announcements is lowered if there are other traffic

  • Remind users to identify themselves if they don’t

• Possible to define multiple logic cores to connect to multiple transceivers

• Possible to link logic cores together

• Support for multiple receivers using a software voter

• Remote receivers can be linked to the logic core via TCP/IP(Internet)

• Remote transmitters can be linked to the logic core via TCP/IP (Internet)

• Multiple squelch detectors: Vox, CTCSS, signal level, evdev (/dev/input/) and external (through serial port pin)

• Multi tone signalling to transmit signal strength measurements from a remote RX site that is linked in through RF.

• Digital deemphasis/preemphasis filter

• DTMF muting

• Squelch tail elimination

• Flexible CTCSS transmit. A tone can be configured to be transmitted always or on specific events like when the squelch is open, another logic core transmits, a module transmits and/or when an announcement is being played.

• A QSO recorder feature to record QSO:s to WAV-files.

• Possible to control SvxLink using selective calling (SelCall) codes in addition to DTMF commands.

• A simple help system module

• A parrot module that retransmit received audio

• An EchoLink module used to connect to other EchoLink nodes

  • Idle timeout

  • A callsign lookup/connect by callsign function

  • List connected stations on demand

  • Own node id report function

  • Random connect to link, repeater or conference

  • Reconnect to last disconnected node

  • Listen only mode

  • APRS node info announcement support

  • If two SvxLink nodes connect, a better audio codec, Speex, is used instead of the GSM codec. This will provide much improved audio quality.

  • Possible to limit both incoming and outgoing connections to specified stations using regular expressions

  • EchoLink Proxy support

• A Free Radio Network module

  • Count connected clients

  • Listen-only mode

• A voice mail module

  • Record voice mail for local users

• A DTMF repeater module that retransmits received DTMF digits.

  • Control other DTMF controlled stations on the same frequency

• A selective calling encoder module that uses DTMF commands to make SvxLink send out selective calling sequences.

• Possible to write new modules in the TCL scripting language

These are the most important features of the Qtel application.

• Graphical EchoLink client application

• Use the Qt widget toolkit

• The EchoLink station list is divided into Conferences, Links, Repeaters and Stations

• A bookmark system

• Support for multiple languages (English, Swedish, German, Spanish, Ukranian, Russian, Hungarian, Japanese, French and Italian at the moment)

• VOX

• When connecting to a SvxLink node through EchoLink, a better audio codec, Speex, is used. This provides a much improved audio quality.

• EchoLink Proxy support