Panasonic KX-TD500 Installation Manual page 23

1.3 System Connection Diagram
DIG ITA
L SU
PE R HY
BR
ID
SY ST
EM RU
N
OF F LIN
E
ALA
RM
KX-T500 System
Single Line Telephone
Data Terminal
Cordless Phone
Telephone Answering
Machine with Facsimile
Voice Processing System
1-10 System Outline
Central Office Lines
(one pair) (two pair)
(one pair) KX-T7320
(two
pair)
(one pair)
KX-T7330
(two
pair)
(one
pair)
KX-T7350
(two pair)
(one
pair)
KX-T7425
• Parallel connections of extension is available. Refer to "Paralleled
Connection of Extensions" in Features Guide for further information.
Doorphone 1 Doorphone 2 Doorphone 3
KX-T7220
KX-T7250
KX-T7433
KX-T7436
Doorphone 4
(two pair)
(two
pair)
KX-T7235
(two pair)
(two
pair)
KX-T7230
(three
pair)
(two pair)
(two
pair)
KX-T7240
(two pair)
KX-T7340
(two pair)
KX-T7440