chan_oss tips

Hardware phone connected to sound card

How to use a modified chan_oss to operate an old POTS (or DECT) phone that is plugged into a sound cord on an Asterisk box
Read more at: http://www.okay.dyndns.org/okhp/linux/asterisk/ (this page may be down once in a while)

See also

• Asterisk Siemens M20: GSM 1-port terminal box
• Build your own chat cord
• Siemens Skype DECT mod

Sound card acting as software phone

This is how to configure the sound card of the Linux server you run Asterisk on to act as a phone client to Asterisk.
From John Todd, http://www.loligo.com

 ;  — oss.conf
 ;
 ; Open Sound System Console Driver Configuration File
 ;
 [general]
 ;
 ; Automatically answer incoming calls on the console?  Choose yes if
 ; for example you want to use this as an intercom.
 ;
 autoanswer=yes
 ;
 ; Default context (is overridden with @context syntax)
 ;
 context=local
 ;
 ;   Default extension to call
  ;
 extension=s
 ;
 ; Default language
 ;
 ;language=en
 ;
 ;   Silence supression can be enabled when sound is over a certain threshold.
 ;   The value for the threshold should probably be between 500 and 2000 or so,
 ; but your mileage may vary.  Use the echo test to evaluate the best setting.
 ;silencesuppression = yes
 ;silencethreshold = 1000



 ; — extensions.conf
 ;
 exten => 111,1,Dial(CONSOLE/dsp)
 exten => 111,2,Hangup

You will need to have the chan_oss module correctly loaded to use the console as a pager. See "show modules" to verify that it's been installed correctly.

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