atcomsystems.ca/forum Forums Other TDM Phone Systems 1A2 and Comkey Telephones & Systems 1A2 and some old WECO stuff

What VLAN do these phones connect to ? LOL . I remember installing these behind many Rolm 7000 and Mitel pbx systems before Touch Tone was readily available . Closets full of 1A2 gear an diode matrix blocks and chasing down fhanthom ringing .

Very neat installation:

Western Electric 551C KSU + Ascom 2030 PBX + 2x VoIP->ISDN gates

All installed on one wall in my home office room.

System under construction in basement will have:

2x Western Electric 584C panels + Ascom 2050 PBX (bigger) + ISDN gates + BT Link for iPhone integration into 1A2

we used mainly 584C and later Sanbar panels . Those were fun times on installs and techs took pride in their work . I remember walking around to all the phones and moving the yellow lead to the black and red on the phone , sometimes in hundreds of phones . The RCA building in Hollywood was one huge 1A2 install . It took us weeks and many coffee breaks , ha ha .

"I remember walking around to all the phones and moving the yellow lead to the black and red on the phone."

What was the reason for that? What type of phones?

The reason for moving the lead was to bypass the capacitor on the network in the phone , it would stop pulsating dc . Phones were ITT 6 button ,10 button and 20 button sets

Actually, bypassing the capacitor was to work with diode matrices. In larger systems, pulsating wasn't an issue since bridged CO line ringing wasn't used much.

Good old times... I saw those only in movies... Lieutenant “Columbo” pictured many of those everywhere: offices, rich residences, police stations... Call Directors of all sorts of colors with matching color garden hoses going God knows where under the tables. “Your wife is on the Line 2, Lt Columbo”.
Golden 1970s

We also installed a ROLM system in the A&M records building in Hollywood around 1975 , before ROLM came out with there Digital RP series phones . All single lines feeding into 1A2 mostly IT&T gear . We saw and heard many rock stars and a blast installing hundreds of key sets .

Pulsating dc is that the same as what we called Bell Tap up here in the north? We never had ringers in our key system sets except when had and old NE set or Logic set. Nearly all were AE sets which didn't have a ringer just a 10 volt buzzer.

I never heard of a bell tap so it must be an north vs california verbage .