Vision System Manual
133
Matrix
Music-on-Hold (MOH)
What’s this?
Whenever a person is put on hold while his call is being transferred or otherwise, the person gets music. Vision
supports three types of music sources.
Internal Music VM Music
Music
External Music
Internal Music Source
Vision offers a 16-tune hold on music.
Music Source
Vision
External
Music Port
External Music Source
A hold-on music of your choice can be played while you keep a person on hold. The Vision supports an
external music interface marked ‘Music’. This interface can handle un-amplified, isolated, analog speech signal
from an external music source.
The specifications of an external music interface are given below:
S
ecification
alue
Interface Type Audio signal
Frequency 300 Hz to 3400 Hz
Maximum voltage 0.707 Vrms across 600Ω
DC bias Not more than 10V DC
Isolation Internal Transformer
Source Impedance required 600Ω
Termination provided 600Ω