Vodavi Starplus DHS, Technical Manual

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2-6 DHS General Description
Standard MOH/BGM Module
The standard MOH/BGM Module is installed at the factory and used to interface with one
external music source via an 1/8 in. phono type connector. This module must be
removed if the optional module is installed.
Figure 2-4: MOH/BGM Module
Option Module
The Option Module replaces the standard MOH/BGM Module. The Option Module
contains two DTMF receivers and two Tone Detectors that enable the following features:
Dial Tone Detection, External Call Forwarding, Direct Inward System Access, Automatic
Busy Redial and Unsupervised Conference. Interface circuits and hardware connectors
are provided for SMDR (Station Message Detail Recording), PC Programming, Caller ID,
Loud Bell Control, External Voice Paging and two music sources. Connectors for SMDR
and PC Programming are 9-pin RS-232 (serial) connectors. Connectors for Loud Bell
Control, External Voice Paging, MOH/BGM and BGM2 are 1/8 in. phono type connectors.
Figure 2-5: Option Module