ALL CONNECTIONS AVAILABLE FOR PANASONIC PURE IP-PBX KX-NS500

KX-NS5130 ( stacking card ) connection to expand system capacity
flash memory connection to backup all system data and messages
external battery connection for power failure
-CO LINES , DIGITAL TELEPHONES AND SLT CONNECTIONS
CONNECTION TO LAN SWITCH FOR IP TELEPHONES CONNECTIONS
AND SYSTEM PROGRAMMING

[@8uhayat]

Excellent info. I wasnt aware there is also a battery backup switch. Very useful info about the cards etc as well. Thanks for all your hard work, which makes our lives easier.

[@renjithknair7724]

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