Re: [Asterisk-Users] IP Intercom's

[Alfred Nurnberger]

As far as I understand it is possible to implement an Intercom with Aastras 390 / 480 ADSI compatible phones. One of the ADSI commands sent to the phone like caller-Id, takes the 390/480 off hook. This way it would be possible to implement a * server controlled auto answer function. I do not have any documentation about the exact command sequence though. Alfred R. Nurnberger Eric Wieling wrote: On Sat, 2004-09-18 at 16:32, James H. Thompson wrote: There are several ways to approach this: * modify an existing SIP phone with Auto-answer (Grandstream for example) to interface with a loud speaker * use a SIP client (Asterisk for example) on a small PC and interface the sound card to a loudspeaker * use a traditional overhead paging/intercom hardware and interface to it via the sound card or via an FXS port. * use an analog auto answer door phone with an FXS interface Check these wiki pages for starting points: http://www.voip-info.org/wiki-Asterisk+Paging+and+Intercom http://www.voip-info.org/wiki-Asterisk+phone+door Or you could plug an amp and some overhead speakers into the sound card on the box running Asterisk and use chan_oss or chan_alsa with auto-answer enabled.

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