[GreenKeys] WRU key code

[Ethan Blanton]

Russ Miller wrote:
> The Western Union supplied Model 28 Telex machines were rare. There
> were some in the very large customers main offices. Luckily, I was
> able to snag a Model 28 Telex when my office in NJ was closed.  
>
> Western Union used a LABD-500 to supply the WRU function.  The
> LABD-500 is located in the base.  Interesting stunt box coding to
> prevent the local answer back from activating when the local operator
> selected FIGS D.

Interesting!  I wonder why they developed their own answerback unit;
perhaps it predated the unit in my TWX machine?  Or perhaps the
Western Electric answerback unit didn't provide some functionality
that they needed?  I know its message is rather short, limited by the
number of code blades in the answerback drum; I don't remember for
sure, but I think it's 19 or 21 charcters.

Ethan