Panasonic KX-T30865 - Page 68

Installation 2-41
2.4.8 Installing Expansion Unit (KX-TD170 /
KX-TD180(D) / KX-TD185 / KX-TD280)
7. (Continued)
Panasonic
ISDN
DIGITAL SUPER HYBRID SYSTEM
2CO w/PFT
2CO
ISDN
Port No.1 or 5
ISDN
Port No.2 or 6
TB
TA
RA
RB
2S0
To Terminal Board or Modular
Jacks from the Central Office
KX-TD280
Panasonic
4CO
DIGITAL SUPER HYBRID SYSTEM
PFT ports
2CO w/PFT
2CO
R: Ring
T: Tip
T2 R1 T1 R2
View of TEL Jack (CO)
(T1/R1)(T2/R2)
CO 5, CO6
or
CO 9, CO10
CO7, CO8
or
CO11, CO12
DIDDID
To Terminal Board or Modular
Jacks from the Central Office
KX-TD185
Jack for Power
Failure Transfer †
† For details, refer to Section 2.5 “Power Failure Transfer Connection.”