Thanks for all the ideas!<BR><BR>I looked around on the internet last
night to try and find some ideas for the wiring and came across some
sites that have started me thinking about how the phone might be wired to
get the intercom to work. I thought I would pass what I found on
to everyone in case they found some of the wiring ideas
useful.<BR><BR>Wiring diagram that shows an inexpensive way to
automatically answer a phone line using a Bilateral trigger diode to open
a circuit:<BR><A
href="http://www.phrack.org/show.php?p=35&a=9">http://www.phrack.org/show.php?p=35&a=9</A><BR><BR>General
telephone circuit diagrams:<BR><A
href="http://www.electronic-circuits-diagrams.com/telephones_circuits.shtml">http://www.electronic-circuits-diagrams.com/telephones_circuits.shtml</A><BR><BR>Phone
wiring guide:<BR><A
href="http://massis.lcs.mit.edu/telecom-archives/archives/technical/wiring.inside.phones">http://massis.lcs.mit.edu/telecom-archives/archives/technical/wiring.inside.phones</A><BR><BR>Wide
variety of links to telephone wiring, circuit diagrams, and do it yourself
ideas:<BR><A
href="http://www.electronics-ee.com/Electronics/Circuits/Telephone.htm">http://www.electronics-ee.com/Electronics/Circuits/Telephone.htm</A><BR><BR>Hope
this helps others!<BR><BR><BR>
<HR>
David Schumann <<A
href="mailto:dschumann@fpcfilters.com">dschumann@fpcfilters.com</A>><BR>Filter
Products Company<BR>P.O. Box 13068<BR>Richmond, VA 23225<BR>804-231-4646,
phone<BR>804-233-3912, fax<BR><A
href="http://fpcfilters.com">http://fpcfilters.com</A><BR><BR>> Great
idea, James.<BR>> <BR>> David, you could use the manager interface
to automagically do all this. When one person initiates a call to the
speaker phone, the manager interface could automatically send the speaker
extension to the conference room. Voila, you're both hooked up!<BR>>
<BR>> Check out mattf's thread, "Asterisk Manager Interface notes " on
last month's user archives and John Todd's reply to the thread
"Office-wide paging with Asterisk and Cisco 7960 7940 phones" (same month)
for an idea of how to get it to work.<BR>> <BR>> If you're patient,
I'm working on something similar for my Polycom phones now, but it'll
probably take me a day or so to write it. I'll post it if it
works.<BR>> <BR>> John<BR>> <BR>> ----- Original Message -----
<BR>> From: James H. Thompson<BR>> To:
asterisk-users@lists.digium.com<BR>> Cc:
dschumann@fpcfilters.com<BR>> Sent: Monday, February 09, 2004 6:52
PM<BR>> Subject: Re: [Asterisk-Users] Intercom system (not paging
system)<BR>> <BR>> <BR>> This may be a way to do what you
described with a $20 speaker phone and no phone modifications:<BR>>
Using the speaker phone dial-in to a conference room on the asterisk Then
whenever anyone wants to call this extension, you can route their call to
the conf room and they can have a two-way conversation.<BR>> <BR>>
Possible Downsides:<BR>> * if call from the conference room gets
terminated for any reason, then it will have to be re-established
manually.<BR>> * resources consumed to keep conference room open and
call always active<BR>> <BR>> Possible Advantages:<BR>> * phone
only in auto-answer when you put it in that mode<BR>> * phone usable to
make and receive normal calls<BR>> <BR>> <BR>> Jim<BR>>
<BR>> James H. Thompson<BR>> jht@lava.net<BR>> <BR>> -----
Original Message ----- <BR>> From: James H. Thompson<BR>> To:
asterisk-users@lists.digium.com<BR>> Cc:
dschumann@fpcfilters.com<BR>> Sent: Monday, February 09, 2004 1:55
PM<BR>> Subject: Re: [Asterisk-Users] Intercom system (not paging
system)<BR>> <BR>> <BR>> There is an auto-answer speakerphone
that might do what you described:<BR>> <BR>> <BR>>
http://www.vikingelectronics.com/products/apartmententry/k-1700-3(rd).html<BR>>
<BR>> <BR>> Jim<BR>> <BR>> James H. Thompson<BR>>
jht@lava.net<BR>> <BR>> ----- Original Message ----- <BR>> From:
David Schumann<BR>> To: asterisk-users@lists.digium.com<BR>> Sent:
Monday, February 09, 2004 9:57 AM<BR>> Subject: [Asterisk-Users]
Intercom system (not paging system)<BR>> <BR>> <BR>> I've looked
around and found previous discussion about this, but so far I have not
seen any answers that really solve this problem.<BR>> <BR>> I'd like
to integrate an intercom system into Asterisk so that users could dial an
extension, the phone on the other end would emit a beep, and then the
speakerphone would activate letting two people have a conversation without
the person at the extension picking up the phone. This is a huge benefit
for an office/warehouse environment.<BR>> <BR>> I know that this can
be programmed with certain Cisco phones (set to autoanswer), but my
problem is that the phones that I want to do this with are down in our
warehouse and I think the Cisco phones would be stolen quickly. I've also
thought about a writing a software solution with microphone and a set of
speakers, but, again, the computers would probably end up getting
stolen.<BR>> <BR>> A $20 analog speaker phone would work great if I
could wire the speaker phone to pick up the line automatically on ring and
then hang up the line on disconnect. Anyone know how to change the wiring
to get it to work?<BR>> <BR>> <BR>> <BR>> David Schumann
<DSCHUMANN@FPCFILTERS.COM><BR>> Filter Products Company<BR>> P.O.
Box 13068<BR>> Richmond, VA 23225<BR>> 804-231-4646, phone<BR>>
804-233-3912, fax<BR>> http://fpcfilters.com<BR>> <BR>>
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