System Components
2
Shelf
Extension
Cards
Trunk
Cards
Resource
Cards
Other Cards
Model 
KX-TD500
KX-TD520
KX-TD50170
KX-TD50172
KX-TD50175
KX-T96184
KX-T96188
KX-TD50180
KX-TD50288
KX-TD50290
KX-T96191
KX-TD50197
KX-T96161
KX-TD193
KX-TD50104
KX-TD50105
KX-TD50189
Description
Basic Shelf
Expansion Shelf 
DHLC (Digital Hybrid Line Circuit) Card
DLC (Digital Proprietary ITS Line Circuit) Card
ESLC (Enlarged-Single Line Telephone Circuit with Message
Waiting) Card
E&M Card
E-1 Digital Trunk Card
ELCOT (Enhanced Loop Start Central Office Trunk) Card
BRI (ISDN Basic Rate Access Interface) Card
PRI30 (ISDN Primary Rate Access Interface) Card
DISA (Direct Inward System Access Trunk) Card
ERMT (Enhanced Remote Circuit) Card
DPH (Doorphone Circuit) Card
Caller ID Card
TSW-CONF (TSW Conference Expansion) Card
DOHCA (OHCA for Digital Telephone) Card
Pay Tone Card
Thank you for purchasing the Panasonic Model 
KX-TD500, Digital Super Hybrid System.
System Components Table