put on to

verb (tr, preposition)

to connect by telephone
to inform (someone) of (a person's location or activities)I put the police on to him
to tell (a person) about (someone or something beneficial)can you put me on to a cheap supermarket?

Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012