atcomsystems.ca/forum Forums Other TDM Phone Systems 1A2 and Comkey Telephones & Systems Dial intercom

I need to find a DTMF dial intercom (single digit is OK) similar to the Teltone T10, T-19, or Melco or WE 4xx equivalents.

It needs to have a feature that seems to be missing from the above named products.

I need to be able to signal repeatedly without hanging up and starting over. In other words, user A picks up the intercom to call user B, who has the intercom code of "5". Caller A needs the ability to keep pressing the "5" button, making the buzzer at station #5 buzz for as many times as needed.

Most (all) of the ones I am familiar with require that once a call is made, that the caller has to hang up and then pick up again and redial. That will not work in my application.

Has anyone succeeded in modifying any of the above to allow this feature?

Thanks for any insight or reports of how you have done this.

Valcom intercom units will do this. Let me check to see if we have any of them.

We had some that to repeat you kept pushing the * button. I don't remember the brand.

Art,

I wish you would have asked that question a few weeks ago before I tore out my old key system.

I have a Melco KC-19. I am almost positive it does exactly that. And the big plus, it also accepts rotary dial!

If you need to know, I can hook it up using the "Gil" method and let you know. But I'll need a pack of fuses...

John,

I'm hopeful that it works that way, but I doubt it, having worked with them in the distant past.

I will send a spackle bucket full of fuses. If you have any left over, just forward them on to Gilbert.

Dare I ask, what is the Gil method?

Jeff, John and I have a mutual friend in Cincinnati (Gil) who "tests" things sometimes using the wrong polarity by mistake, resulting in blown fuses, and worse. He once nearly blew his house off the foundation when he smoked a string of lead/acid central office batteries he had in the basement powering his 400-line step switch.

Art,

I'll test it the next few days and let you know.

I have a Teltone C-19 unit here. I will test it and let you know what happens. I can't remember ever having encountered this feature, back when I used to install them. Here's what they claimed, back in 1982:

"C·19 Installations Only: Verify that the ringback signal is
present in the receiver while the audible signal is
present in the key set, and that the intercom busy lamp
winks when both signals stop. Verify the resignal
feature by making a call to yourself and then, after the
ring burst ends and without hanging up, dialing both
digits of any station."

Arthur, my Melco KC19 seems to do this. You go off hook and signal a station and can repeatedly keep signaling by pushing the button or dialing the station number indefinitely but once another station goes off hook the signaling is disabled.

Is that what you are looking for?
Shawn