[VoIP] Siemens Model 36 - 10 Line PAX

[Richard Lane]

Hi Everyone

I have good news to share.

Tonight I had a bit of spare time so I decided to put the 10 line PAX on 
the bench, wire it up to a power supply and a couple of telephones and 
try it.

The unit has a bit of history known about it. It was made sometime in 
1936 by Siemens Bros, is an all relay PAX, can support 10 extensions and 
can have 2 simultaneous calls on it at any time. It also features a 
supervisory type function which allows a priority extensions to gain 
control to other extensions.

The PAX was originally installed in the Richmond convent in Victoria.It 
was pulled from service in the 70's when a newer unit was installed. I 
bought the unit early this year on Ebay for $50 aussie dollars!

Anyhow with Ian Jolly's help we managed to get it to dial an extension 
and place a call. The unit appears to be missing part of its vibrating 
ringer which stop us getting dialtone or ring cadence but we did get it 
to count properly and place a call. I am chasing a fuse for it which is 
a glass fuse about 2 inches long. anyone got one?

Anyway I am on track to being the first person on CNET Australia to use 
heritage electro mechanical gear to interface to other tandems. I will 
post a few piccies soon and maybe a video of the system working.

Richard