[channels] language=en ; Default context context=inbound-from-pstn switchtype=national ; Signalling method (default is fxs). Valid values: ; fxs_ls: FXS (Loop Start) ; fxs_gs: FXS (Ground Start) ; fxs_ks: FXS (Kewl Start) ; fxo_ls: FXO (Loop Start) ; fxo_gs: FXO (Ground Start) ; fxo_ks: FXO (Kewl Start) ; fxs_rx: Receive audio/COR on an FXS kewlstart interface (FXO at the channel bank) ; fxs_tx: Transmit audio/PTT on an FXS loopstart interface (FXO at the channel bank) ; fxo_rx: Receive audio/COR on an FXO loopstart interface (FXS at the channel bank) ; fxo_tx: Transmit audio/PTT on an FXO groundstart interface (FXS at the channel bank) signalling=fxs_ks ; ; A variety of timing parameters can be specified as well ; Including: ; prewink: Pre-wink time ; preflash: Pre-flash time ; wink: Wink time ; flash: Flash time ; start: Start time ; rxwink: Receiver wink time ; rxflash: Receiver flashtime ; debounce: Debounce timing ; rxwink=300 ; Atlas seems to use long (250ms) winks ; usecallerid=yes ; ; Whether or not to hide outgoing caller ID ; hidecallerid=no ; ; Whether or not to enable call waiting on FXO lines ; callwaiting=no ; ; Whether or not restrict outgoing caller ID (will be sent as ANI only, not available for the user) ; Mostly use with FXS ports ; ;restrictcid=no ; ; Whether or not use the caller ID presentation for the outgoing call that the calling switch is sending ; usecallingpres=yes ; ; Support Caller*ID on Call Waiting ; callwaitingcallerid=yes ; ; Support three-way calling ; threewaycalling=no ; ; Support flash-hook call transfer (requires three way calling) ; transfer=no ; ; Support call forward variable ; cancallforward=no ; ; Whether or not to support Call Return (*69/1471,3) ; callreturn=yes ; ; Enable echo cancellation ; Use either "yes", "no", or a power of two from 32 to 256 if you wish ; to actually set the number of taps of cancellation. ; echocancel=yes ; ; Generally, it is not necessary (and in fact undesirable) to echo cancel ; when the circuit path is entirely TDM. You may, however, reverse this ; behavior by enabling the echo cancel during pure TDM bridging below. ; echocancelwhenbridged=yes ; ; In some cases, the echo canceller doesn't train quickly enough and there ; is echo at the beginning of the call. Enabling echo training will cause ; asterisk to briefly mute the channel, send an impulse, and use the impulse ; response to pre-train the echo canceller so it can start out with a much ; closer idea of the actual echo. ; echotraining=yes ; ; You may also set the default receive and transmit gains (in dB) ; rxgain=0.0 txgain=0.0 ; ; Logical groups can be assigned to allow outgoing rollover. Groups ; range from 0 to 31, and multiple groups can be specified. ; group=1 ; ; Ring groups (a.k.a. call groups) and pickup groups. If a phone is ringing ; and it is a member of a group which is one of your pickup groups, then ; you can answer it by picking up and dialing *8#. For simple offices, just ; make these both the same ; callgroup=9 pickupgroup=9 ; ; Specify whether the channel should be answered immediately or ; if the simple switch should provide dialtone, read digits, etc. ; immediate=yes musiconhold=default ; On trunk interfaces (FXS) and E&M interfaces (E&M, Wink, Feature Group D ; etc, it can be useful to perform busy detection either in an effort to ; detect hangup or for detecting busies ; busydetect=no ; ; On trunk interfaces (FXS) it can be useful to attempt to follow the progress ; of a call through RINGING, BUSY, and ANSWERING. If turned on, call ; progress attempts to determine answer, busy, and ringing on phone lines. ; This feature is HIGHLY EXPERIMENTAL and can easily detect false answers, ; so don't count on it being very accurate. Also, it is ONLY configured for ; standard U.S. tones. This feature can also easily detect false hangups. ; The symptoms of this is being disconnected in the middle of a call for no ; reason. ; callprogress=no ; channel => 1