The disappointment is just in the caller id part. The CTX100 system is excellent. I finally installed the full system in my house. Until today all the phones were all on one table.

My old Toshiba system had music on hold. I could connect it to an mp3 player. The CTX100 also has music on hold, but uses an RCA plug. How could I connect my mp3 player to an RCA plug? Will there be a problem with resistance?

Thank you,
John