mobile phone and door entry system

[moh]

Can any body help me get started on a project which is to connect a
mobile phone speaker and microphone to a door entry system speaker and
microphone

 

[joseph2k]

Can any body help me get started on a project which is to connect a
mobile phone speaker and microphone to a door entry system speaker and
microphone

I don't suppose that you have heard of wire? </snide comment>

 

[moh]

I don't suppose that you have heard of wire? </snide comment>

dear JosephKK it might be a bit more involved that wire if we consider
device impedances, what I need is a buffer amp