Old overhead paging system

Unanswered Question
Aug 10th, 2009

Hello Netpro,

I have a client that wants to reuse his old overhead paging system. It's basically an amp with an RCA plug as input. How would I go about connecting it to their new IP Telephony setup? I was reading the cisco doc about using E&M interfaces, but I'm not sure how to interconnect the E&M interface to that RCA.

I have this problem too.
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