Phone Number Translation Delay in PCS Systems with ATM Backbones

Future wired networks with an ATM backbone will need to support PCS and wireless subscriber services. One of the key functions required to support PCS and wireless subscribers with non-geographic phone numbers (NGPN) will be the ability to efficiently identify which Home Location Register (HLR) database serves the subscriber. (Note that the same functionality is also needed to serve subscribers with portable phone numbers.) In a previous paper we have presented a scheme for NGPN translation based upon distributed, dynamic hashing. The scheme uses a hash function in the Visitor Location Registers (VLR)and a set of distributed Translation Servers (TS) which store the NGPN-to-HLR mapping.

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