rj 11 - How to convert RJ11 to RCA

We have a Marantz sound system. We also have an Asterisk PBX. Now, I want to have Asterisk play a bell tone for a schedule over the sound system.So I've set up a Cisco SPA112 Port Adapter (basically a Digital-to-Analog convertor) and assigned it an ipaddress on the network. I've also set up Asterisk to know what to do. So I am able to send the sounds to the Port Adapter, but I need now to get the sound from the Adapter box into the Marantz.We have done something similar with our PA system. Asterisk broadcasts to a Port Adapter which in tur...Read more