Rory

Hi

I have never had to add external MOH to an OXO, but from what I can gather you will need a daughterboard AFU-1. Then to set the option from PM5, go to System Miscellaneous > Messages & Music > Music on Hold. If not then other users with more hands-on experience will no doubt be along to advise further.*

Kind regards.

*Edit: Especially with regard to how to wire your audio source to an RJ45 port!

phild1953

Rory is correct you need the AFU daughterboard, from memory the music source is connected to pins 1&2 of the RJ 45 connector. It's also possible to record the MOH directly in to the system; I think by default it's 2 minutes, 10 with an additional licence. If you're uploading recorded music it needs to me Mono, A Law, 8kb/s.