User guide
119BusinessPhone – Dialog 4224 Operator / Dialog 3214
Installation
Install key panel
1 Connect cable 
2 Attach key panel unit 
3 Secure with screws 
4Install stand
When connecting one or two optional key panels to your telephone 
the DBY 409 01 key panel may be used. No external power cables 
are required for this key panel, as power is supplied from your 
telephone.
However, if three or four key panels are to be connected, the 
DBY 409 02 optional key panel must be used for all key panels 
connected to your telephone. Whereby, a 24 V a.c. power cable 
must be attached to the first key panel connected to your 
telephone to provide power to all key panels.
24 V a.c. connection 
when more than two 
key panels are used. 
Connection must be 
to the first key panel
Dialog4224En.book Page 119 Wednesday, April 2, 2003 3:19 AM










