I installed an IP500 with 9.1 software to replace an existing system. They have an existing message on hold device with the option of 8 or 600 ohm. I plugged an RCA to aux cable in and set the system to external music source but I am getting nothing from it. This is a brand new unit, so there was never a .wav file uploaded. Tone works, but nothing from external. I can put my test set on the aux plug and I can hear the message. I've tried both 8 and 600 settings.
Thanks in advance.
Thanks in advance.