Panasonic KX-TVA502 2-Port Expansion Module (Analog/Digital):
Panasonic's KX-TVA502 2 Port Expansion Module will add 2 ports to Panasonic's KX-TVA50 Voice Mail System.
Used for Analog APITS (KX-TA) or Digital DPITS (KXTD or KXTDA) Integration. A maximum of two of these cards may be installed.
* Note: The KX-TVA502 does not work properly with the KX-TA824 phone system. Only 2 ports can be used on the TVA50 VM when it is connected to a Panasonic KX-TA824 KSU. Even though there are 4 ports available on the KSU. Please call if you have any questions regarding compatibility issues with this card.