24 Oct
2012
24 Oct
'12
5:53 a.m.
On Oct 23, 2012, at 11:46 PM, Chuck Guzis wrote:
On 10/23/2012 12:31 AM, Tothwolf wrote:
Baynesville Electronics in Baltimore, MD still sells them. They're handy
for more than just the above-mentioned situation (lots of places used a
similar scheme for LocalTalk wiring for Macs, thanks to Farallon's
PhoneNet adaptor, which let you run whole small networks over similar
wiring). I seem to recall some Cisco routers using the 8P8C serial
connection directly, but that may be faulty memory; it's been a while
since I've used a Cisco router, and if I never do again, it might be too
soon.
- Dave
If these adapters sound useful at all I can see
about taking some photos
and a work up the pinout. I just really can't see me ever using ~350 of
these things :)
I recognize these and even recall an office suite that we used (around 1985) being wired
this way. The idea is that you had the same installer wire your phone system to the KSU,
and give you a punch-down block in the closet to wire your terminals. So basically, you
attached the adapters to your PeeCees or terminals and connected them to pairs in the
cable (usually 50-conductor) that also carried your phone traffic using more-or-less
standard modular cords.
Radio Shack, believe it or not, used to sell DB25F versions of these with a 4-conductor
modular connector in the connector hood. I still have a couple.