I'm confused by the usage of the idiom "on its behalf" in this sentence:

One of the key parts of the telecommunication is the action that one device is asking another device to take on its behalf.

I think the meaning of that idiom is "instead of", but it seems pretty awkward to me there. Might there be other meanings which are more suitable there?

  • Could you explain, why you replace my "that" with your "the" in a sentence I think the meaning of that idiom is "instead of". Does it make no sense there? – Dmitrii Bundin Oct 19 '14 at 3:58

On its behalf = for it.

Device A asks|tells device B to do something. B does it on A's behalf. B does it for A.

Would you go to the town council for me and tell them they're a bunch of idiots?

Kiril: Dmitry, why are you here before the town council today? 
Dmitry: I am here on behalf of Tim, who asked me to say you were a bunch of idiots.

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