2005-11-20 16:15:33 +00:00
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(CAPI*) chan_capi a Common ISDN API 2.0 implementation
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for Asterisk/OpenPBX
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2005-06-02 18:47:35 +00:00
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2007-02-11 14:51:30 +00:00
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Copyright (C) 2005-2007 Cytronics & Melware
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2005-06-02 18:47:35 +00:00
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Armin Schindler <armin@melware.de>
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Reworked, but based on the work of
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Copyright (C) 2002-2005 Junghanns.NET GmbH
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Klaus-Peter Junghanns <kpj@junghanns.net>
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2005-11-20 16:15:33 +00:00
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Ported to OpenPBX.org 22nd October 2004,
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Rob Thomas, <xrobau@gmail.com>
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2005-06-02 18:47:35 +00:00
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This program is free software and may be modified and distributed under
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the terms of the GNU Public License. There is _NO_ warranty for this!
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2005-09-11 08:39:29 +00:00
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Thanks go to the debuggers, bugfixers and contributors :)
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2005-06-02 18:47:35 +00:00
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===========================================================================
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Lele Forzani <lele@windmill.it>
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Florian Overkamp <florian@obsimref.com>
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Gareth Watts <gareth@omnipotent.net>
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Jeff Noxon <jeff@planetfall.com>
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Petr Michalek <petr.michalek@aca.cz>
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Jan Stocker
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2005-06-04 14:28:52 +00:00
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Frank Sautter, levigo group
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2005-09-11 08:39:29 +00:00
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Hans Petter Selasky
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2006-12-18 22:18:16 +00:00
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Simon Peter <dn.tlp@gmx.net>
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2005-06-04 14:28:52 +00:00
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2005-09-11 08:39:29 +00:00
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(...and all the others that have been forgotten...) :-)
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2005-06-02 18:47:35 +00:00
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2006-06-24 11:53:47 +00:00
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No support for Asterisk 1.0.x any more, you need at least
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Asterisk 1.2.x
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2006-06-27 14:54:03 +00:00
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To support all fax features (e.g. fax polling), you
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need version 3 of libcapi20.
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2005-06-02 18:47:35 +00:00
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This chan_capi version includes:
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================================
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2005-06-07 04:26:12 +00:00
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- Multiple controller support
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2005-06-02 18:47:35 +00:00
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- CID,DNID (callling party, called party)
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- CLIR/CLIP
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2006-12-18 22:18:16 +00:00
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- Supplementary services: CD (deflect/reroute),HOLD,RETRIEVE,ECT,3PTY
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2005-06-02 18:47:35 +00:00
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- DTMF (dependend on card) + software DTMF support
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2005-06-07 04:26:12 +00:00
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- Early B3 connects (always,success,never)
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- Digital audio (what did you think?)
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- Incoming/outgoing calls
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2005-07-17 19:01:14 +00:00
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- Overlap sending (dialtone and additional digits)
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2005-06-07 04:26:12 +00:00
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- E(xplicit) C(all) T(ransfer) (...although it's done implicit-but don't tell!)
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- Use asterisks internal DSP functions for DTMF
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- Alaw support
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- Ulaw support!
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2005-06-02 18:47:35 +00:00
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- Eicon CAPI echo cancelation (echocancel=1)
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2005-06-07 04:26:12 +00:00
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- Reject call waiting (ACO)
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2005-06-02 18:47:35 +00:00
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- DID for Point to Point mode (a.k.a overlap receiving)
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2006-12-02 10:08:50 +00:00
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- Rx/Tx gains using positive linar value (rxgain=1.0, txgain=1.0 means no change)
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2005-06-07 04:26:12 +00:00
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- (Inter)national dialing prefix (for callerid) configurable in capi.conf
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- CLI command "capi info" shows B channel status of chan_capi
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- Catch all MSN (incomingmsn=*)
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2006-06-18 20:57:56 +00:00
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- Some configuration enhancements (msn=123,124,125)
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2005-06-07 04:26:12 +00:00
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- Added accountcode=
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- Echo squelching (echosquelch=1)
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- Callgroup support
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2005-07-17 19:01:14 +00:00
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- report correct DIALSTATUS and HANGUPCAUSE.
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2005-06-07 04:26:12 +00:00
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- Updated to support the new frame->delivery field
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- Compiles with different Asterisk versions (automatic build configuration)
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2006-06-27 14:54:03 +00:00
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- receive/send faxes over CAPI (see below)
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2005-09-11 08:39:29 +00:00
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- Fixes and compatibility for BSD (Jan Stocker and Hans Petter Selasky)
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2005-08-07 19:24:06 +00:00
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- Support 'type of number'.
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2005-09-11 08:39:29 +00:00
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- ISDN hold.
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2005-09-17 19:08:28 +00:00
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- CAPI Line Interconnect.
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2006-01-30 23:40:28 +00:00
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- Eicon DIVA Server VoIP/RTP
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2006-04-03 20:44:08 +00:00
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- CLI command "capi show channels" shows details on channel status.
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2007-02-10 23:18:57 +00:00
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- Asterisk 1.4 jitterbuffer configuration.
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2005-06-02 18:47:35 +00:00
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2005-11-20 16:15:33 +00:00
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Permissions
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===========
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OpenPBX.org, by default, runs as the non-root user/group
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openpbx/openpbx. You must make sure that the /dev/capi* device files
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are readable by OpenPBX.org either by changing the ownership or the
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permissions of the the device files or by running OpenPBX.org as root.
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2005-07-17 19:01:14 +00:00
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The Dial string
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===============
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2005-10-09 16:45:03 +00:00
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Example: Dial(CAPI/g<group>/[<callerid>:]<destination>[/<params>])
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Or: Dial(CAPI/contr<controller>/[<callerid>:]<destination>[/<params>])
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Or: Dial(CAPI/<interface-name>/[<callerid>:]<destination>[/<params>])
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2005-07-03 12:15:14 +00:00
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'group' can be a value, comma separated list of values or a range
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using '-'. The according interface is found by searching a match with
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the 'group' specified in the capi.conf for each interface.
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2005-10-09 16:45:03 +00:00
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The optional <callerid> followed by an ':' can be used to set a callerid
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for this dial() command, without changing the original channel's callerid.
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2005-07-17 19:01:14 +00:00
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'params' is an optional part to set special settings for this call.
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The string consists of a list of characters with the following meaning:
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'b' : early B3 always.
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'B' : early B3 on successful calls only.
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2005-10-09 15:49:32 +00:00
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'd' : use the default caller id which is set by defaultcid= in capi.conf
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2005-10-01 17:00:56 +00:00
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'o' : use overlap sending of number.
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(Useful if additional digits shall be send afterwards or together
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with 'b' to get dialtone and then send the number, e.g. if otherwise
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no progress tones are available)
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2005-07-17 19:01:14 +00:00
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2005-07-27 18:17:41 +00:00
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If the <interface-name> is used in dialstring, be sure the name (specified
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in capi.conf) does not start with 'contr' or 'g'.
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2005-07-17 19:01:14 +00:00
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CLIP/CLIR uses the calling presentation of the calling channel, which can
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be modified using the SetCallerPres() application. Use
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SetCallerPres(prohib_not_screened) for CLIR. That is why the msn= param in
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capi.conf has been removed. The callerID is also taken from the calling channel.
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2005-06-02 18:47:35 +00:00
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2005-08-13 18:21:20 +00:00
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CAPI command application
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========================
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chan_capi provides an additional Asterisk application
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capicommand()
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With this application, special capi commands and features can be used.
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Call Deflection:
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Forwards an unanswered call to another number.
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Example:
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exten => s,1,capicommand(deflect|12345678)
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2005-08-14 12:32:18 +00:00
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Fax receive:
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Receive a fax using CAPI.
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Example:
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exten => s,1,capicommand(receivefax|/tmp/${UNIQUEID}|+49 6137 555123|Asterisk)
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(more see below)
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2006-06-27 14:54:03 +00:00
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Fax send:
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Send a fax using CAPI.
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Example:
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exten => s,1,capicommand(sendfax|/path/to/faxfile.sff|+49 6137 555123|Asterisk)
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(more see below)
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2005-08-14 13:59:16 +00:00
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Enable/Disable echosquelch:
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Enable or disable a very primitive echo suppressor.
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Disable this before you start recording voicemail or your files may get choppy.
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Example:
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exten => s,1,capicommand(echosquelch|yes)
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2005-08-14 14:57:04 +00:00
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or
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2005-08-14 13:59:16 +00:00
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exten => s,1,capicommand(echosquelch|no)
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2006-05-21 12:10:53 +00:00
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Enable/Disable echocancel:
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Enable or disable echo-cancel provided by CAPI driver/hardware.
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You may need to disable echo-cancel when e.g. data/fax transmission handled
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2006-11-25 16:13:40 +00:00
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by non-CAPI application. After hangup, this setting is restored to value
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set in capi.conf.
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2006-05-21 12:10:53 +00:00
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Example:
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exten => s,1,capicommand(echocancel|yes)
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or
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exten => s,1,capicommand(echocancel|no)
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2005-08-14 14:57:04 +00:00
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Malicious Call Identification:
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Report a call of malicious nature.
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Example:
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exten => s,1,capicommand(malicious)
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2005-08-16 18:25:03 +00:00
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Hold:
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Puts an answered call on hold, this has nothing to do with asterisk's onhold
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thingie (music et al).
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2005-08-21 10:28:43 +00:00
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An optional parameter is the name of the variable which shall be set with
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the reference ID of the call on hold.
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2005-08-16 18:25:03 +00:00
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Example:
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exten => s,1,capicommand(hold)
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2005-08-21 10:28:43 +00:00
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or
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exten => s,1,capicommand(hold|MYHOLDVAR)
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2005-08-13 18:21:20 +00:00
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2005-08-25 19:30:31 +00:00
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Holdtype:
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Set the type of 'hold'. When Asterisk wants to put the call on hold, the specified method
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will be used.
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Example:
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exten => s,1,capicommand(holdtype|local) ;no hold, Asterisk can play MOH
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or
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exten => s,1,capicommand(holdtype|hold) ;ISDN-HOLD
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or
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; not yet implemented
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exten => s,1,capicommand(holdtype|notify) ;notify the peer only, Asterisk can play MOH
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2005-08-16 18:25:03 +00:00
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Retrieve:
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2005-08-21 10:28:43 +00:00
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Gets back the holded call. An optional parameter is the reference ID of the call
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on hold.
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2005-08-16 18:25:03 +00:00
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Example:
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exten => s,1,capicommand(retrieve)
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2005-08-21 10:28:43 +00:00
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or
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exten => s,1,capicommand(retrieve|${MYHOLDVAR})
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2005-08-13 18:21:20 +00:00
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2005-08-21 15:35:44 +00:00
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ECT:
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Explicit call transfer of the call on hold (must put call on hold first!)
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Example:
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exten => s,1,capicommand(ect|${MYHOLDVAR})
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or
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[macro-capiect]
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exten => s,1,capicommand(ect)
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[default]
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exten => s,1,capicommand(hold)
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2005-09-16 12:38:16 +00:00
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exten => s,2,Wait(1)
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exten => s,3,Dial(CAPI/contr1/1234,60,M(capiect))
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2005-06-02 18:47:35 +00:00
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2006-12-18 22:18:16 +00:00
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3PTY:
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Initiate a Three-Party Conference (must have one call on hold and one active call!).
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Example:
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exten => s,1,capicommand(3pty_begin|${MYHOLDVAR})
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or
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[macro-capi3pty]
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exten => s,1,capicommand(3pty_begin)
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[default]
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exten => s,1,capicommand(hold)
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exten => s,2,Dial(CAPI/contr1/1234,,M(capi3pty))
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2005-06-02 18:47:35 +00:00
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Using CLIR
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==========
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2005-07-13 15:07:31 +00:00
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Use the SetCallerPres() application before you dial:
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exten => _X.,1,SetCallerPres(prohib_not_screened)
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exten => _X.,2,Dial(CAPI/contr1/${EXTEN})
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2005-06-02 18:47:35 +00:00
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Enjoying early B3 connects (inband call progress, tones and announcements)
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==========================================================================
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2005-07-17 19:01:14 +00:00
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Early B3 is configurable in the dialstring parameters.
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If you set a 'b', early B3 will always be used, also if the call fails,
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because the number is unprovisioned, etc ...
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If you set a 'B', early B3 will only be used on successful calls,
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2005-06-07 04:26:12 +00:00
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giving you ring indication,etc...
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Don't use indications in the Dial command, your local exchange will do that for
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you:
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2005-07-17 19:01:14 +00:00
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exten => _X.,1,Dial(CAPI/contr1/${EXTEN}/B,30)
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2005-06-07 04:26:12 +00:00
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(early B3 on success)
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2005-07-17 19:01:14 +00:00
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exten => _X.,1,Dial(CAPI/contr1/${EXTEN}/b,30)
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2005-06-07 04:26:12 +00:00
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(always early B3)
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exten => _X.,1,Dial(CAPI/contr1/${EXTEN},30,r)
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(no early B3, fake ring indication)
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2005-07-17 19:01:14 +00:00
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exten => _X.,1,Dial(CAPI/contr1/${EXTEN}/b,30,r)
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2005-06-07 04:26:12 +00:00
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(always early B3, fake indicatons if the exchange does not give us
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indications)
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2005-07-17 19:01:14 +00:00
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exten => _X.,1,Dial(CAPI/contr1/${EXTEN}/B,30,r)
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2005-06-07 04:26:12 +00:00
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(early B3 on success, fake indicatons if the exchange does not give us
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indications)
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2005-06-02 18:47:35 +00:00
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For normal PBX usage you would use the "b" option, always early B3.
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Overlap sending (a.k.a. real dialtone)
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======================================
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2005-06-07 04:26:12 +00:00
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When you dial an empty number, and have early B3 enabled, with:
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2005-07-17 19:01:14 +00:00
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Dial(CAPI/g1//b)
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2005-06-07 04:26:12 +00:00
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The channel will come up at once and give you the dialtone it gets from the
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local exchange.
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At this point the channel is like a legacy phone, now you can send DTMF digits
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to dial.
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2005-06-02 18:47:35 +00:00
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Example context for incoming calls on MSN 12345678:
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===================================================
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[capi-in]
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exten => 12345678,1,Dial(SIP/phone1)
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exten => 12345678,2,Hangup
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2005-08-14 12:32:18 +00:00
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2006-06-27 14:54:03 +00:00
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Short HOWTO of capicommand(receivefax...) and capicommand(sendfax...):
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2005-08-14 12:32:18 +00:00
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==========================================================================
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2005-06-07 04:26:12 +00:00
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For those of you who have a CAPI card with an on-board DSP (like some Eicon and
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2006-06-27 14:54:03 +00:00
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DIVA Server), this allows you to receive/send faxes.
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capicommand(receivefax|<filename>[|<stationid>|<headline>]):
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------------------------------------------------------------
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2005-08-14 12:32:18 +00:00
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If you want to answer a channel in fax mode, use capicommand(receivefax|...)
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instead of Answer()
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2005-06-07 04:26:12 +00:00
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If you use Answer(), you will be in voice mode. If the hardware DSP detects
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2005-08-14 12:32:18 +00:00
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fax tone, you can switch from voice to fax mode by calling capicommand(receivefax|...).
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The parameter <filename> is mandatory and the parameters <stationid> and
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<headline> are optional.
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2006-05-27 12:52:28 +00:00
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To enable fax tone detection and redirect to extension 'fax', use config variable
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'faxdetect' in capi.conf.
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2005-06-04 14:28:52 +00:00
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Example of use :
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line number 123, play something, if a fax tone is detected, handle it
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line number 124, answer directly in fax mode
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[incoming]
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exten => 123,1,Answer()
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exten => 123,2,BackGround(jpop)
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exten => 124,1,Goto(handle_fax,s,1)
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exten => fax,1,Goto(handle_fax,s,1)
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[handle_fax]
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2005-08-14 12:32:18 +00:00
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exten => s,1,capicommand(receivefax|/tmp/${UNIQUEID}[|<stationid>|<headline>])
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2005-06-04 14:28:52 +00:00
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exten => s,2,Hangup()
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exten => h,1,deadagi,fax.php // Run sfftobmp and mail it.
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2005-08-14 12:32:18 +00:00
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The output of capicommand(receivefax|...) is a SFF file.
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Use sfftobmp to convert it.
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2005-06-07 04:26:12 +00:00
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With a DIVA Server, following features are provided:
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- fax up to 33600
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- high resolution
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- Color Fax
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2005-07-17 19:01:14 +00:00
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- JPEG Compression is disabled (not tested yet)
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2005-06-02 18:47:35 +00:00
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2006-06-27 14:54:03 +00:00
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capicommand(sendfax|<filename>[|<stationid>|<headline>]):
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------------------------------------------------------------
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To send a fax, you can use the same mechanism like with receivefax.
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Just replace the <filename> with the path to the .SFF file to send.
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After disconnect of a fax connection, the following variables
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will be set for that channel:
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FAXSTATUS : 0 = OK, 1 = Error.
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FAXREASON : Value of B3 disconnect reason.
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FAXREASONTEXT : Decoded text of FAXREASON value.
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FAXRATE : The baud rate of the fax connection.
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FAXRESOLUTION : 0 = standard, 1 = high.
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FAXFORMAT : 0 = SFF.
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FAXPAGES : Number of pages received.
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FAXID : The ID of the remote fax maschine.
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2005-08-25 17:35:21 +00:00
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2006-04-03 20:44:08 +00:00
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CLI command "capi show channels"
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================================
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This CLI command shows detailed info on all CAPI channels.
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Column description:
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Line-Name : the name of the interface as defined in capi.conf
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NTmode : is the line in NT mode instead fo TE mode
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state : the state of the channel, like 'Conn', 'Disc', 'Dial', ...
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i/o : incoming or outgoing line
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2006-05-18 14:36:09 +00:00
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bproto : protocol on CAPI ('fax', 'trans' or 'rtp')
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2006-04-03 20:44:08 +00:00
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isdnstate : a string which may consists of the following characters
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* = PBX is active
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G = Line-Interconnect (CAPI bridge) active
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B = b-channel is up
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b = b-channel is requested
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P = Progress was signaled
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H = this line is on hold
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T = this line is in transfer (ECT) mode
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S = SETUP[_ACK] was signaled
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ton : type of number value
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number : the caller-number and destination-number
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2005-08-25 17:35:21 +00:00
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Asterisk variables used/set by chan_capi
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========================================
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2005-10-01 15:17:10 +00:00
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BCHANNELINFO
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On incomming call, this variable is set with the B-channel information value:
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'0' : B-channel is used (default)
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'1' : D-channel is used (not implemented yet)
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'2' : neither B nor D channel is used (e.g. call waiting)
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Call-Waiting: an incoming call with BCHANNELINFO not '0' cannot be accepted.
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Another connection must be dropped before accepting or use
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capicommand(deflect|<number>) to initiate call deflection to another destination.
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2005-08-25 17:35:21 +00:00
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CALLEDTON
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The 'type of number' value of the called number is saved in this variable on
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incomming call.
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_CALLERHOLDID
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If a call is put on hold (ISDN-HOLD), the reference id is saved in this variable.
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This variable is inherited as CALLERHOLDID to the dialed channel and will be used
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if e.g. capicommand(ect) is used to transfer the held call.
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2005-10-01 15:17:10 +00:00
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CALLINGSUBADDRESS
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If set on dial(), the calling subaddress will be set to the content.
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CALLEDSUBADDRESS
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If set on dial(), the called subaddress will be set to the content.
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2005-08-25 17:35:21 +00:00
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CONNECTEDNUMBER
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Can be set before answering and if set, the content is used for
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IE 'Connected Number' on answering.
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FAXEXTEN
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If chan_capi sends the call to extensions 'fax', the original extension number
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is saved in this variable.
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PRI_CAUSE
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If set, this value will be used as hangup cause on hangup.
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REDIRECTINGNUMBER
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On incoming call, if the call was redirected to you by someone, the
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number of the redirecting party is saved in this variable.
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2005-10-01 15:17:10 +00:00
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RDNIS is set as well.
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2005-08-25 17:35:21 +00:00
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2005-08-28 14:14:23 +00:00
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REDIRECTREASON
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If the incoming call was redirected to you, this variable is set
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with the reason value.
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2005-10-01 15:17:10 +00:00
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2005-09-17 10:49:34 +00:00
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