[SATLUG] Re: Need Touchtone Phones
zeb.fletcher at gmail.com
Tue Dec 4 16:44:26 CST 2007
Not sure if this is what your looking for
It is from the Ennes School district in Austin
On Nov 28, 2007 8:52 PM, Walt DuBose <dubose at texas.net> wrote:
> Vinny Huckaba wrote:
> > I have an old itt/sbc touchtone phone you can have.
> > http://p.office1000.com/vp4/ITT2500VBRIT5.jpg
> Super...I'll be intouch
> > I setup a similar system back in the early 90's for our VFD/EMS. I used
> > televideo 955 terminal and a hayes 2400 bps external modem connected to
> > low band radio 37.180mhz and a VHF 155.340 so that the S.O. could dial
> > and page us via our handheld units with tone coded squelch. They would
> > into the system, the modem would answer, then key up the transmitter,
> the SO
> > would enter the 4 digit code, then speak the message. The 955 terminal
> > used to page, send messages and program the modem.
> More or less the same idea but codes will be input via the TTPad with two
> speakers in the sides of the phone instrument. This will be three line
> control...two for duplex audio and one line to ground for push to talk.
> The system will also eventually interface to a Linux PBX and go out via
> over longer distances than I have wire. :-)
> > I tinkered with switching to 10 sec xmit and 10sec recv so that you
> > have half duplex comm. My setup was for proof of concept. We ran it
> > couple of years until the county decided to upgrade their repeater. The
> > system is probably still sitting in the courthouse collecting dust..
> Well I'm sure that the idea is still viable when cellphone do not work or
> in an
> area where there is no CP service.
> > I later installed a radio telephone interconnect for another Fire Dept,
> > is still in use today as a backup system.
> > All the schematics and documentation are somewhere in the attic...
> I know the feeling.
> > --Vinny
> Txn and CULater.
> > On 11/24/07, Walt DuBose <dubose at texas.net> wrote:
> >>Oh, I also failed to mention that I have a full 8092.11b link to use but
> >>my WAP
> >>has died.
> >>I am hoping to be able to eventually use multiline PBX software on both
> >>ends so
> >>I can run the entire control over WiFi.
> >>I hope everyone had a wonderful Thanksgiving.
> >>Best Regards to All from Walt/ARS K5YFW...hope to see you in December.
> >>Walt DuBose wrote:
> >>>I am in need of 3 or 4 of the original AT&T/SWBell touchtone phones for
> >>>a command and control system I am building. The Touchtone pad can be
> >>>missing from two of the phones. If the phones are multiline phones,
> >>>the better.
> >>>The idea is to build a remote command and control function that will
> >>>work via telephone lines over a distance of a mile but more practicaly
> >>>as far as the length of 8 pair cable I can get will work.
> >>>The system will be able to control one of the new ICOM dualband radios
> >>>that allow for full radio control via touchtone. Another telephone
> >>>be used to control an HF Rig. The third and fourth phones will be able
> >>>to control LMR radios.
> >>>Also, the 3rd or 4th phones will act as and intercoms between the
> >>>and communications unit.
> >>>I would like to get some of the handsets that had PTT switches in them
> >>>but if I can't, I can add micro-switches to the handsets.
> >>>anyone have a red phone :-) ) Color of the phone doesn't matter.
> >>>This is basically what I worked on back in the early 60's in commercial
> >>>2-way radio and later in the early 80's in the Air Force Reserve.
> >>>While on a technical subject...I hope some of you have or will consider
> >>>getting phone patches connected to your HF rigs...this is a GREAT way
> >>>relay voice traffic from a deployed area back to a operations center.
> >>>I'd appreciate any assistance that you can provide.
> >>>Please contact me at k5yfw(at)arrl.net or dubose(at)texas.net
> >>>Thanks and 73,
> >>>In His Love and Care,
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