EMP & Lightning Home Surge Protection
EMP - Click Here!
Global Test Supply
Linked Banner to your Product or Website
eCommerce website for sale!
Previous Thread
Next Thread
Print Thread
Rate Thread
Joined: Feb 2021
Posts: 1
Member
OP Offline
Member
Joined: Feb 2021
Posts: 1
Hello. I have an old memory bugging me -- perhaps someone can confirm for me:

I seem to remember the 1a2 key system at my childhood elementary school labeling the rightmost key "LOCAL" instead of "ICM" for intercom.

One would activate that key and then use a buzzer pad mounted to the right of the phone to signal the other party to join the common circuit.


Can anyone confirm that was sometimes/often/rarely/never the practice back in the day?


Thanks! /jim

Meticore Weight Loss Voted #1
Joined: Dec 2001
Posts: 228
Member
Offline
Member
Joined: Dec 2001
Posts: 228
Yep. We I installed a few. pretty crude circuit. The buzzer would signal an Executive in the other room or visa versa.
If memory serves me right we used the Yellow orange wire for buzzer...or was it yellow slate.

Last edited by Avidcomm; 02/09/21 06:12 PM.
Joined: Jan 2005
Posts: 15,301
Likes: 5
Moderator-Vertical, Vodavi, 1A2, Outside Wire
*****
Online Content
Moderator-Vertical, Vodavi, 1A2, Outside Wire
*****
Joined: Jan 2005
Posts: 15,301
Likes: 5
"Local" was another term for manual intercom. Unlike dial intercoms, which are self-explanatory, most local intercom setups on 1A2 used a simple 401A/B card to provide the talk path and lamp, then any type of momentary key could be used for signaling. If the phone had spare line keys, the locking pin could be removed and that key's A lead caused a ground to be sent to the distant buzzer when pressed. In the absence of spare line keys, an external line key was affixed to the side of the phone to provide the button(s) needed for the system.

I will say that I encountered some dial intercom setups that were designated as "local" too. That word was not exclusive to any particular type of intercom system. I'm pretty sure it was more about the person who was typing the labels for the phones.

While is was possible, the yellow/slate pair was rarely used for buzzer signaling. That pair was for the ringer. Buzzers could be on any pair, however the yellow/orange and yellow/green were most commonly used.


Ed Vaughn, MBSWWYPBX

Moderated by  MooreTel 

Link Copied to Clipboard
Advertising Sponsor
Popular Topics (Views)
Forum Statistics
Forums94
Topics93,299
Posts634,163
Members49,501
Most Online5,661
May 23rd, 2018
Today's Birthdays
There are no members with birthdays on this day.
Newest Members
Geli, wlampert, borgIT, Nadeemkhattak, NZAndy101
49,500 Registered Users
Get Tech Support Now! Click the banner below
Get Tech Support Now!
Top Posters (30 Days)
dexman 9
Toner 7
Ruben 4
Advertising Sponsor Spot 2
EMP Shield for Commercial - Home & Vehicle
Use Coupon code SAVE - Click Here!
Who's Online Now
18 members (nortelvoip, RATHER BE FISHING, Mercenary Roadie, Carl Navarro, hitechcomm, BobRobert, Yoda, EV607797, Silversam, Tip&Ring, nameless, Geli, Ruben, JGN, Professor Shadow, sundance, pvj, justbill), 145 guests, and 38 robots.
Key: Admin, Global Mod, Mod
Contact Us | Telephone System Tech Support | Terms of Service

Sundance Communications is not affiliated with any of the above manufacturers.
©Copyright Sundance Communications 1998-2021
Trusted Partners
landing page builder Antiransomware 300x250 Your Business Phone Service in the Cloud