Music on Hold (MOH) plays music to calls on Hold, parked calls, and transferred calls. The music lets
the caller know that their call is waiting, not forgotten. Without Music on Hold, the system
provides silence to these types of calls. Music on Hold is available from one of eight sources: two
internal beep tones, two audio input minijacks, and one of four PGDAD Module audio ports. The source
you choose in turn connects to a customer-provided external music source.
- In DSX-40, the audio input minijacks are located on the equipment cabinet.
- In DSX-80/160, the audio input minijacks are located on the CPU PCB.
The external music source you connect to the audio input minijacks is typically a CD player or FM
receiver. The source, which you can also use for Background Music, must be compatible with the
Music Source Specifications
Relative Input Level
||+18 dBr (+/- dBr) at 1.0 kHz
For more on connecting a customer-provided music source, refer to the system’s Hardware Manual.
With Music on Hold enabled, transferred callers can optionally listen to ringback or MOH while their
call waits at the transfer destination.
Note: In accordance with U.S. copyright law, a license may be required from the America Society of
Composers, Authors and Publishers (ASCAP) or other similar organizations, if radio, television
broadcasts or music other than material not in the public domain are transmitted through the Music
on Hold feature of telecommunications systems. NEC Unified Solutions, Inc. hereby disclaims any
liability arising out of the failure to obtain such a license.