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I'm looking for help with a problem I'm having with a Melco KT-19, Bell Systems 55`C KSU and a 2851 Wall mount phone. I replaced a 2565 Desk Set (was working the Melco Intercom just fine) with the 2851 Wall mount phone. The 2851 receives buzzer ringing and voice path from Melco but the 2851...

Thanks Jim, The Speakerphone is internal to the phone that mounts to the chassis of the phone. Here is a link to Practices for phone: http://bellsystempractices.org/500-/512-/512-620-480-i03_1974-04-01.pdf I can't find ohm's of speaker anywhere. The part number that was on the speaker itself...

Anyone have any experience with a Bell Systems 2752 wall panel phone, 1752 or 752? I am working on a 2752 phone that has a bad speaker for speakerphone that has a open circuit. Anyone recall what ohm speaker was used for these speakerphones. Since the bad speaker isn't reading any resistance I...

It seems to be impossible to find, but "Lee's ABC's of the Telephone" published a guide to 1A2 installation, that was pretty clear on real world installation. You might also look at Bell System Practices (BSP's) on the TCI document site http://www.telephonecollectors.info/" I've spent some time...

Thanks to all for info. I'm kind of getting it. "Next to these 66B425 blocks, add one more. Terminate the cable from the KT-37 on it, so now you have a place to take the Intercom jumpers from. Use a piece of 3 pair back into the KSU to connect to the A and B battery". Questions: I have eight...

Thanks. So if you wire directly to the phones was it typical in old days to wire the Melco to a 66B block so you can cross-connect to multiple phones? This Bell Systems 551C I'm working on is going to have up to eight phones. I plan to punch the phone jack wiring to 66M (split blocks... so I can...

So I'm looking for more help. Anyone know where the Melco KT-37 tip/ring connects on the Bell Systems 551c? The manual for the 551c can be found at: bellsystempractices.org/500-/...-/518-215-407-i01_1976-07-01.pdf We are mainly using model 2564 phones and the first four line buttons from left...

Thanks to all for your help. I'm installing for a guy that enjoys old phones. Not have any real 1A2 experience I'm confused by some of the connections. I'm going to look at them for a while and hopefully things will make sense. Once again all your help is greatly appreciated.

Yep it is on the side but I can't read it because most of the wording is gone.

Anyone familiar with installation of a Melco KT-37? I've been given the job of figuring out how this dinosaur works and I don't have much 1A2 experience. I'm connecting it to a Western Electric 551C KSU. I've just about got the KSU and phones figured out but I'm having trouble with the Melco...