On-Hold Plus moh-400 用户指南

Troubleshooting Guide

Unit will not turn on (red 
power LED not illuminated)

Calls can not put call on-hold 
by pressing 

**

on the 

telephone keypad 

Can not place line 2, 3 or 4 
on hold using 

**

on the 

telephone keypad 

Call on-hold but can't hear 
audio source

"Line indicator" lights on 
phone go dark when call is 
placed on-hold

HOLD condition does not 
disengage when line is 
picked up

Check AC adaptor connection.

Try plugging AC Adaptor into 

another wall outlet.

Unplug and re-plug AC adaptor 

connection at back of unit

Carefully follow installation diagram 

in instruction manual.  

Check configuration of wall jacks. 

(i.e. are line 1 and 2 (or 3 and 4) 

combined in one wall jack or do they 

use separate wall jacks for each 

individual line). Carefully follow 

installation diagram in instruction 

manual.

Connect audio source 

Check audio cable connection

RCA (Phono) style cable end must 

be plugged into MOH 400 AUDIO IN 

jack -- MINI style cable end must be 

plugged into "phones" jack or "audio 

out" jack of audio source.

After pressing 

**

, press the 

HOLD button on the phone.  To 

disengage, you must press the 

"FLASH" button or use the "Switch 

Hook" to release the hold condition.

Press "FLASH" key or use switch-

hook function on your telephone.

SYMPTOM             CAUSE                 SOLUTION

"RCA" (Phono) style cable

plug into MOH 400 "Audio In"

"MINI" style cable

Plug into audio source's "phones"

jack or "audio out" jack