davidb@pacer.uucp (David Barts) (03/30/91)
Recently, someone posted that a 500 D set was just like a 500 set, except it was designed for use on a party line with divided ringing. I own two Western Electric 2500 DM sets that were formerly used on a LARGE centrex system (two NNX prefixes!). What is the difference between a 2500 DM and a "normal" 2500 set? One of these sets is on the desk beside my computer as I type this. It works just fine, and rings properly even though I don't have party line service. Both sets were manufactured in the late 70's and appear to have been reconditioned at some time in the mid 80's. David Barts N5JRN Pacer Corporation, Bothell, WA davidb@pacer.uucp ...!uunet!pilchuck!pacer!davidb
dave@westmark.westmark.com (Dave Levenson) (03/31/91)
In article <telecom11.255.6@eecs.nwu.edu>, davidb@pacer.uucp (David Barts) writes: > Recently, someone posted that a 500 D set was just like a 500 set, > except it was designed for use on a party line with divided ringing. I > own two Western Electric 2500 DM sets that were formerly used on a > LARGE centrex system (two NNX prefixes!). What is the difference > between a 2500 DM and a "normal" 2500 set? The 500 D was a Dial set. (The 500 C was the non-dial version with the large round plastic cover where the dial was.) Many older telephone sets carry the designation 500C/D meaning that they were field-convertible between dial and non-dial use. The 2500 is the 500 with touch-tone dialing, and was sometimes identified as 2500 D. (There was no 2500 C, however, since the 500 C would work just as well!) Eventually, the D was dropped. The M was added when modular hardware was installed. A 2500 DM means a dial set with touch-tone, and modular handset and mounting cords. Dave Levenson Internet: dave@westmark.com Westmark, Inc. UUCP: {uunet | rutgers | att}!westmark!dave Warren, NJ, USA AT&T Mail: !westmark!dave Voice: 908 647 0900 Fax: 908 647 6857