Charging method in telecommunications network
Charging unit price determination/information apparatus and comm
Circuit arrangement for suppressing interference signals on the
Circuit arrangement for telecommunications switching systems, pa
Circuit arrangement for telecommunications switching systems, pa
Circuit arrangement for telecommunications switching systems, pa
Circuit for generating metering pulses intended for presentation
Collaborative conference bridges
Collect callback
Collect credit card service
Communication assistance system and method
Communication charge calculating apparatus, control method...
Communication charge management system
Communication control system and communication control method
Communication control system and communication control method
Communication method and system
Communication method authenticating a personal station and...
Communication service control apparatus
Communication services method and apparatus
Communication system control method