- Panasonic KX TDA0173 8-Port Single Line Extension Card
- Compatible with KX-TDA100,KX-TDA200,KX-TDE100,KX-TDE 200,Panasonic Phone Systems
- 8 ports per card for Single Line Devices such as Single Line Phones
- Compatible with KX-TDA0168 Caller ID Card for Single Line Devices
- 2 ports are equipped with power failure transfer
- Equipped with 8 DTMF receivers Card requires 1 free slot