Power feeding system using two-wire subscriber lines
Power-failure resistant communication system
Predicting performance of telephone lines for data services
Predicting performance of telephone lines for data services
Pressure alarms and reports system module for proactive...
Pressure alarms and reports system module for proactive...
Priority auto-control method of signal routes in No. 7...
Private branch exchange system with specific information transmi
Pro-active billing and routing test set
Proact module for proactive maintenance application
Proactive analysis of communication network problems
Proactive maintenance application
Proactive maintenance application
Proactive maintenance application
Probe for sampling differential electromagnetic fields
Processes and systems for correlating work orders
Processes and systems for correlating work orders
Processes and systems for creating and for managing trouble...
Processes and systems for creating and for managing trouble...
Processes and systems for creating maintenance reports for...