My Collection


Apologies for the mess! Maybe that’s how I possibly busted my POTS card! As with everything in my part of the house, it’s a work in progress…


Making the historical telephones that I had collected prior to 2015 would be a hit or miss as many of these sets are not supported in VOIP systems without some clever hacking. While I as this closed to abandon using or supporting Avaya, I had someone ship me a decommissioned Definity PBX. The original intention from the beginning was to have the old telephones be lined together in a form of a visual museum (built in mid 2016.)

In short, this is the Avaya Definity “csi” Cabinet. This uses the R9 version of the Definity (released in the year 2000), a single processor and a tone clock with the potential for up to 900 lines when linked with three cabinets.

  • An announcement card for “recordings” (TN750C)
  • Analog line sans caller ID, 16 port (TN746B) See Analog Collection
  • Digital line, 16 port (TN2181) See “Voice Terminals”
  • Definity AUDIX (TN568 8D – for up to 8 voice mail lines)
  • CO Trunk, for wireline connectivity (TN747B)
  • Control LAN, for IP connectivity (TN799D)
  • DS1 Interface, for digital trunking (TN767C)
  • 4 Wire Digital Line, to support these types of sets (TN754) See “Voice Terminals”

 Analog Collection

Green Western Electric 500 Rotary set

Black Western Electric 500 Rotary Set

A Cortelco 2500 Telephone

Northern Telecom (later known as Nortel) Logic POTS Telephone. This is a single line model. Purchased in 2011, and this photo taken in 2012, it’s been taken well care of. (See video review)

Nortel (Northern Telecom) Logic Telephone

“The wall of Nortels”, upper set was given to me by Joe the UCX Guy in 2016, bottom one was bought at thrift the year before.

Rotary Trimline

Another view of the Trimline

Brown Comdial 2500 POTS Telephone (as an actual Wang company telephone)

Touch Tone Trimline

Radio Shack Neon Telephone

AT&T 7101 Analog Telephone

Radio Shack 2 line 2500 like set.

ITT 564 Multi Line Push Button Rotary Telephone


Avaya/Lucent/AT&T Digital “Voice Terminals

These types of telephones are office types, when in fact they aren’t telephones at all. They are those “dumb terminals” that carry voice and data on one two or four wire pipes. All of the telephone activity lives in this room and these sets “extends” the telephone calls, feature information, caller ID onto these sets. Analog works a little differently.

There are two separate boards, because one requires four wires, and another with 2 wires.

These two lovely 8434DX sets. I actually had another one, but the Vacuum Florescent Display failed, and I sold it to the collection at the New Hampshire Telephone Museum in 2015. As of 2017, it’s not known if such set is displayed in the post mid century exhibit…

The 6424D+M Digital Telephone (taken when it was connected to the IP Office system)


The 6416D+M Digital Telephone. D means there’s a display module; + means two way hands free calling and M means support for the 100a analog module that sat underneath the telephone. This module enabled modern day, small little modems, analog telephones, etc and shared a call appearance; because picking up the analog phone would enable the person to hear the first call appearance.

And as a result this made the height a little bit taller, which would make it’s XM24 sidecar not flush, if they were together. This was a big deal when Lucent introduced this version (including the above 6424D+M) because the original sets in it’s first year didn’t have such support.

Avaya 6408D+ Digital Telephone

8410 Digital Voice Terminal (aka “The Donald” as this was Donald J. Trump’s long time desk phone at the Trump Tower.) Sidenote in early 2017, he insulted Avaya with favorable comments towards Cisco since taking presidency

AT&T 7407 Digital Voice Terminal

An image of an AT&T 7407 digital office telephone

This required 4 wires, which required that TN 754


The Avaya 302A Attendant Console (works – for the moment, but unsure about the reliability, it came in questionable condition when I bought it in 2017)

The 302c, the third version was acquired in March 2017

Pictured to the left, second shelf is the CallMaster IV (it’s actual model number is the 603 series). This is used for call center/contact center services. Buttons differ from the traditional digital telephone, as features specific for call centers are typically programmed. Call Center functionality can be very complex and Avaya’s offerings took Aspect off the market and in the early 2000s touted to have 90% of the contact center space. This however differs from the 302 console and it’s ancestor, the CallDirector. The latter was a multi line telephone to “message centers” (or the secretaries room) that predated voice mail. It would be an understatement to say that design was influenced in the design of the CallMaster.

Non Production VoIP (Yuck Collection)

While I previously posted that I had given up on the saga of Cisco, I gave their systems a chance. And sadly, I do not like their limitations of what it can offer. Making my desk phone read RSS feeds is not very productive. The ability to page is yet another ridiculous feature missing from Cisco IPT systems.

I still have my Cisco 1760-V Router. It’s on it’s own LAN, and I several ports on this CE-500 that is tagged to the historical VLAN. A couple VOIP phones I still own, some from Cisco and some from others. All these sets run off SIP.

The Cisco 7970 that has that fictional 236 area code

2 Polycom SoundPoint IP VVX310 sets, that I literally got off the street from a business that relocated. Gigabit ethernet and up to six call appearances and monitoring lines. Want more? Gotta buy a sidecar! (They haven’t learned from Avaya and Mitel that there is these nice things called “pages” where you mimic a 24 hard button phone by having 4 “pages” if you have 6 buttons”.