I posted my solution yesterday and it is $50 so not sure why people are still asking for a cheap solution.
I have a cheap disposable "walmart" phone on the channel bank, in immediate mode so when it is picked up it jumps immediately to the default context. I can also dial it like any other extension to talk to people at the door. I have a $20 electric strike on the door which is coupled to my burglar alarm (that I can use a keypad outside to open right now) to interface to asterisk all I need is the following about $5 worth of stuff. 10k resistor from one of the data lines on the parallel port to base of a 2n2222 transistor, emitter of 2222 to ground/earth, collector to a coil of a 12vdc pcb mount relay, 1n400x diode in inverse parallel with the coil to kill spikes, other end of the diode/coil to 12vdc from a disk drive connector in the pc. normally open contacts of the coil in parallel with whatever else drives the door strike (normally a 12-24AC/DC supply - AC if you like that Buzz, DC if a click is more your liking.) Make a simple agi script either using system command or in C - output a 1 to the bit of the parport, wait 5seconds, output a 0. Done. Much less than $50 - parts avail - Radio Shack or Dick Smith (are they still around in AU ?) Digikey is another fine source. > [EMAIL PROTECTED] <> wrote: >>> Hi, >>> >>> Anyone know anything about Asterisk's support for door phones? >>> Receiving the call from the door intercom system, opening the door, > etc? >>> >>> Any hardware recommendations? I understand that the equipment we >>> have now is Panasonic proprietary and came with the currently >>> deployed Panasonic TD12-32 pbx. >>> >>> We intend to deploy Asterisk in a 72 extensions + 16 trunks in a >>> while, so any info will be great. >>> >>> thanks >> >> While this isn't an Asterisk question, I guess, I find it hard not to >> comment on a particularly excellent piece of equipment which which > I've >> worked previously: > > John Todd said: >> Can be ordered from Grainger (at least, two years ago it could) here >> in North America under part number 4RR12 "Emergency Access Phone" for >> $623.50. I'm sure you can find it elsewhere, too. > > Ummm, you might go to that level for a large office/block of units or > campus environment etc, but I was looking for something for home (mainly > just for the coolness factor). > > Something where I can sit in my car in the pouring rain, dial into > asterisk from my mobile, enter some pin code etc, have the door open, > and then dash to the door with some bags/boxes etc and not have to > fumble for keys. > > Another thought is the possibility of having small cameras mounted > around the home linked to a linux box. Someone turns up and presses the > intercom, since you are 'logged out' asterisk forwards the call to your > mobile (or work phone etc). You answer the call, log onto your webcam, > and let them in. You now watch what they are doing until they leave. > > Of course, you might not *really* want to do this in practice else you > may end up with 'blind spots' and it will still take you a really long > time to get there and try and stop them from doing whatever it is they > are doing... > > Of course, it might be your girlfriend/mother/etc in which case you > hopefully trust them a little. > > So, anyone got a solution for under AUD$100 ? > Surely this is really just a bunch of cheap/commodity electronic > components? > > Regards, > Adam > > -- > Adam Goryachev > Website Managers > Ph: +61 2 9345 4395 [EMAIL PROTECTED] > Fax: +61 2 9345 4396 www.websitemanagers.com.au > > _______________________________________________ > Asterisk-Users mailing list > [EMAIL PROTECTED] > http://lists.digium.com/mailman/listinfo/asterisk-users > _______________________________________________ Asterisk-Users mailing list [EMAIL PROTECTED] http://lists.digium.com/mailman/listinfo/asterisk-users
