ITT ten-button key telephones with a single button strip above the dial:
The rotary version was type 830.
The touchtone version was type 2830.
These were typically used for up to 8 CO lines with common single-gong ringer, and one Intercom line connected to a Melco or similar 19-station intercom unit, with a low-voltage AC buzzer ("round buzzer with blue leads").
I must have installed hundreds of those over the years. They were good phones, they were robust and well-made, and they were easy enough to repair. They occasionally got odd problems having to do with the alignment of the contacts in the keystrips, also easily fixed. My only beef with ITT in the 70s - mid 80s, was that they used a nasty plastic for their touchtone dial buttons, that made a high-pitched *squeak!* when you pressed each button, similar to fingernails-on-chalkboard. Lubricating these would make them better until the lube evaporated or scraped off, and then they'd go back to squeaking. For some reason my clients never noticed (or at least never commented on) the squeaky keypads.
They are *not* Call Directors. The Call Director was WE's version of a 1A2 phone with multiple button strips arranged vertically to the right of the dial. AE's version was the "Call Commander."
AE also made their own version of ITT's 830 / 2830, which were relatively rare in the interconnect industry. I still have one around, NOS in chocolate brown. Basically identical appearance to the ITT but with AE's characteristic dials & handsets. AE's 5-line set of that era was type 186, which had the line keystrip below the dial. AE's self-contained 3-line version w/ 3 hold buttons, was paradoxically designated as the type 187, and has always been a favorite of mine because it's flexible and easy to deploy in a range of conditions, without need of a key service unit.
