Panasonic KX-TD500 - Manual (Page 326)

Maintenance
326 Programming Guide
Parameter Extension Card (1-24)
Default None
Value Range None, XXX : YYY [XXX : Card No. (101-314), YYY : Card Type]
Description/Function Specifies the extension card number and its type, which will be
used in case of Power Failure Transfer.
Notes
• DPTs and some APTs cannot be used during a power failure.
• Auxiliary connections between the Trunk card and
Extension card should be made as per System Programming
so that conversation is maintained when power is restored or
TSW is recovering.
Reference • 1.4 Fault Recovery / Diagnostics (F/G)
– Power Failure Transfer
• 2.9.1 Auxiliary Connection for Power Failure Transfer (I/M)
• 1.2 Slot Assignment (P/G)