Secretary PTT equipment

[mrpeter]

Hey guys.I've been searching all around the web and didnt found exactly what I want. What is the name of that PTT equipment that the secretary uses to talk the boss? It is a little comic, but is the one that appears in the following video:

https://www.youtube.com/watch?v=GI6CfKcMhjY

Thanks you all.

 

[makkem]

Hi
Not exactly the same but this works the same way
http://www.maplin.co.uk/p/2-way-wired-intercom-bz61r]