Asterisk and door phones

An FAQ on the Asterisk mailing list is how to setup a door phone with Asterisk.

The best current solution seems to be using an SIP based VoIP door phone. You can also use standard analog door phone or door phone controller connected to Asterisk via a standard FXO analog port (X100/X101, Channelbank, etc.).

Connection methods

There are door phones with these interfaces:

• SIP VoIP
• FTZ 123 D12
• analog a/b

Some native SIP based doorphones (e.g. 2N HeliosIP) offers you also SIP video telephony so you can see who is infront of the door.
To be able to use analog door phone you can use a standard Analog Telephone Adapter (ATA), e.g. from Sipura, Grandstream or the IAXy.

Sources

Some sources for door phones and related hardware (for controlling electric door strikes, etc.)

• http://www.alphatech.cz - Designs SIP door phones for Linkcom, Fermax, ProTalk and others incl. video
• http://www.stentofonbaudisch.com/produkte/sip-modulsystem-en - Baudisch Stentofon modular SIP Video door station
• http://www.mobotix.com/other/Products/T24-IP-Video-Door-Station - MOBOTIX "T24" Video Door Station
• http://www.2n.cz/en/products/intercom-systems/ip-intercoms/?targetView=menu - Pure SIP door phones supporting SIP video, Elevator phones, Door phones and entry system, intercom
• http://voip.valcom.com/ip_intercomdoorphones.htm - Pure SIP Door Phone by Valcom
• http://www.its-tel.com/category_info.asp?id=112_ - Pure IP Door Phone by ITS
• rocom GmbH - various door phones and modules. a/b- and FTZ123D12-adapters. notably Doortello.
• http://www.siedle.de/ Various nice door phones in the higher price range. But more important: the controller DCA 612-0 works perfectly with Asterisk and an Analog Telephone Adapter (ATA)
• http://www.vikingelectronics.com/ - Door phones and systems, elevator phones, special purpose phone interfaces, and more
• http://www.vikingelectronics.com/products/view_product. ...