Support for change of numbers

Suppressed ringing connectivity

Suppression of call answer supervision in a telephone network by

Switch and method of seizing outgoing trunk of same

Switch code routing management method and system

Switch cutover with paced transition

Switched integrated network access system

Switched telecommunication network, method of establishing a...

Switching core controller for digital cross-connect system,...

Switching system control method and apparatus

Switching system for electronic switcher

Switching system reliability

Synchronous digital hierarchy switch system

System access modules for use with a telecommunications...

System access modules for use with a telecommunications...

System and computer program for routing a dedicated number...

System and method for a local number portability cache

System and method for accessing a wireless network from a...

System and method for accessing a wireless network from a...

System and method for activation of an enhanced telecommunicatio