Patent ID: 6115766
Filing Date: 2000-09-05
Classification: G06F,H04M,H04Q

Abstract:
A system comprising:a telephone switch having a hot pluggable back plane with a variable length pin receptacle; anda non-hot pluggable adaptor card with variable length pins capable of being received into the receptacle of said back plane and having an ISA standard receptacle for receiving a conventional ISA-based standard telephony expansion (SCSA or MVIP) card, said adaptor card including:(a) means for detecting the insertion of the adaptor card into the receptacle of the said back plane,(b) means for immediately connecting the ground bus of the expansion card to the ground bus of the back plane through the ground bus of the adaptor card, and(c) means for delaying the connection of the signal bus of said back plane to the signal bus of the expansion card for a first predetermined period of time.