[VoIP] BERRY KS-22475 Test Set

[Steph Kerman]

IIRC, this is a Bell System version of the Berry 312A, a manual MF 
keyset and Trimline dial DP sender box. There are 2 versions of the 
312A.  A photo would probably help.  The 312A requires 48VDC.

Steph

Shane Young wrote:
> I bought one of these a couple days ago and it has no documentation..
>
> I assume it runs on -48v but wanted to verify that before I start  
> connecting anything.
>
> Anyone else have one?
>
>