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Intercom 是一个 Unix系统上灵活的语音传输软件。支持标准音频压缩比如GSM, G.711, and G.72x和其他音频编码。Intercom专为高速网络设计来传输高品质的语音

Intercom NEWS - User visible changes.

version 0.15 - Shane WegneR, 2003-02-13

* Added a user manual available in several formats.
* Many miscellaneous bugfixes.
* Rework ifreturn into a more general if statement and renamed
  appropriately.  See the manual for more information.
* Remove the pattern argument from event hooks, deprecated by if.
  Note: hooks using patterns will need to be rewritten.
* Removed sigusr1 and sigusr2 hooks.  Added call_connect hook which
  triggers when a call's audio channel is connected.
* Added cmd_maxdepth variable to prevent command looping.
* License is now GPL v2 (not any later version).
* The input and output_gain variables are now measured in a db gain.
  For example: input_gain=6 effectively doubles the signal.
  Note: your input_gain and output_gain variables will need updating.
* The save command will only output variables which are non-default
  in order to reduce compatibility problems between versions.
* Allow intercom to use crypto with newer openssl (v0.9.6) libraries.

version 0.14 - Shane WegneR, 2002-02-11

* Many portability fixes.
* Added event-hooks to execute command based on incoming events.
  - This deprecates auto_answer, cmd_call, and cmd_hangup.
  - To get auto_answer: hook add call_incoming '.*' answer
  - To get cmd_call: hook add call_incoming '.*' "exec myscript.sh"
  - And for call_hangup: hook add call_outgoing '.*' "exec myscript.sh"
* Added ifreturn command to execute a command based on the exit-code
  of an external shell command. (help ifreturn)

version 0.13 - Shane Wegner, 2002-02-01

* Intercom will no longer read .intercomrc in the current directory
  on startup.
* Added support for encryption of audio data using either DES OR
  BlowFish.  Note: this changes the protocol in an incompatible way.
* Added --enable-cpu=<type> and --enable-optimize options to
  configure.
* Fix bugs with input and output gain control.

version 0.12 - Shane Wegner, 2002-01-28

* Batch of bugfixes.
* Added input gain and output gain controls.
* Changed the silence_time variable to a decimal (incompatible
change).
* Added snd_singledevice option to only open the audio device once
  for reading and writing.  Most soundcards need this set to 1 with
  the exception of the SBLive and possibly some others.
* Changed the default Intercom port to 4266 (incompatible change).

version 0.11 - Shane Wegner, 2002-01-19

* Bundle GSM support with Intercom.
* Drop audio data if we get too far behind.  This improves latency
  quite a bit especially when silence supression is disabled.
* Added a loopback mode where intercom simply short-cercuits it's
  input through the output.
* Added gettext support (currently disabled) but the infrastructure
  is there.

version 0.10 - Shane Wegner, 2002-01-17

* There is pretty much no shared code between this and the last
  public release (0.02).

* See ChangeLog for further details.

CopyRight (C) 2001-2003  Shane Wegner

This file is part of Intercom.

Intercom is free software; you can redistribute it and/or modify it under
the terms of version 2 of the GNU General Public License as published by the
Free Software Foundation.

Intercom is distributed in the hope that it will be useful, but
WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
General Public License for more details.

You should have received a copy of version 2 of the GNU General Public
License along with tar; see the file COPYING.  If not, write to the Free
Software Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA
02111-1307, USA.