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User Guide for On Hold Appliance OH-4910     Document G/01144     Issue 2     Page 1 

 

 

 
 

ON HOLD MESSENGER APPLIANCE  

OH-4910 

 

USER GUIDE

 

 

Introduction 

 
The 

On Hold Messenger Appliance

 Model OH-4910 is a ‘no-frills’ record/loop-playback unit for playing messages to 

telephone callers when they are placed on hold. Importance has been placed on telephone quality message reproduction 
rather than supplementary facilities. Also, the unit is not adversely affected by power interruptions. Your on-hold message 
is retained indefinitely until you download a new one and, loop-playback starts automatically when power is applied. 
 
The 

On Hold Messenger Appliance

 is supplied with superb royalty-free music ready for immediate use. You can 

personally download your own on-hold message from a tape, CD or PC Sound card and your message can run for up to 
four minutes (eight minutes optional). 
 
Applications for this device include on-hold messaging and recorded information services. 
 

Diagram 

 

 

 

Connection 

 
The 

On Hold Messenger Appliance

 is simply connected to the Music On Hold (MOH) port of any telephone system via 

the RJ12 socket on the unit. No external Line Isolation Unit (LIU) is required.  Apply 12Vdc power to the 

On Hold 

Messenger Appliance

 2.1 mm power socket and the recorded message automatically starts playing in an endless loop. 

 
Note: When 

the 

On Hold Messenger Appliance 

is playing, the green ‘Play’ LED indicator is steady on. 

When the 

On Hold Messenger Appliance 

is

 

recording the red ‘Record’ LED indicator blinks. 

REC

MADE IN AUSTRALIA

MODEL OH-4910

ACA SUPPLIER’S

CODE N468

ON HOLD

MESSENGER

APPLIANCE

RECORD INPUT

PLAY

PRESS TO RECORD

POWER

6-12V DC

ON HOLD

PORT

OUTPUT

VOLUME

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