Patent ID: 7137002
Filing Date: 2006-11-14
Classification: H04M

Abstract:
1. A system for validating International Emergency Preference Scheme (IEPS) authenticating entity electronic signatures in incoming IEPS calls on a network entry switch in an international telecommunications network, said network including signaling protocols that allow transmission of IEPS authenticating entity identity and IEPS authenticating entity electronic signature to said switch during call setup, said switch able to determine network load of its national network, said system comprising: a list of IEPS authenticating entities and associated electronic signature information; a rule set for determining whether IEPS calls from authenticating entities in said list and not in said list will be marked or validated when received by said switch, and how marked upon failing validation; authenticating entity electronic signature validation logic for validating incoming IEPS calls using said associated electronic signature information; a sampling scheme for sampling incoming IEPS calls at a desired per entity sampling rate; values by which to increment and decrement per entity sampling rates based on the per entity validation failure rates and network load; said network entry switch operated to: mark or validate incoming IEPS calls on a per entity basis based on said rule set; validate incoming IEPS calls based on overall rate of incoming IEPS calls received; validate a sampling of incoming IEPS calls using said electronic signature validation logic and mark calls upon validation failure based on said rule set; and increment and decrement per entity validation sampling rates by said values based on per entity validation failure rates and network load.