- This expansion card can be used with almost any phone system, and adds two ports to the KX-TVA50.
Uses DPITS or APITS integration, or in-band signaling.
- You can install one or two 502 or 503 modules in a system.
- Photo is symbolic, not accurate.
- Toll-free tech support.
- FREE SHIPPING in the USA.
Panasonic KX-TVA502, 2-port expansion module for KX-TVA50. Uses DPITS or APITS