Electronic surveillance in a public switched telephone network
Emergency telephone communications system
Enhanced communication platform and related communication...
Enhanced communication platform and related communication...
Enhanced communication platform and related communication...
Enhanced communication services and apparatus
Enhanced signaling for terminating resource
Escalation tracking system
Establishing and managing communications over...
Event pre-processing for composing a report
Exchange system having originating call restriction function
Extracting and processing data derived from a common channel sig
Extraction of desired data from flow
Facility modem-to-modem application
Facsimile apparatus with device to determine line changes, and h
Fee collection system and method for call completion
Flexible billing support in a service selection gateway (SSG)
Flexible call detail recording system
Flexible customer billing solution for telephone systems utilizi
Flexible recharge system for prepaid telecommunications service