In the early 1950s, a Labs team began serious work on electronic switching.

The majority of installed systems in this category actually use electronic switching between fiber transponders.

It was one of their first applications requiring electronic switching of voice circuits.

These functions cannot be combined to operate from one switch, and the cost of custom built electronic switching would be prohibitive.

Work also continues with studies of applying external controls such as electronic switching and semiconductor structures to control transmission and reflection properties.

These are electronic switching and memory devices made of relatively cheap glassy materials instead of expensive crystal.

In 1987 the network was converted to electronic switching.

For example, electronic switching might allot an individual speaker to a soloist and share the remaining speakers among the other instruments.

GTE California, had completed the transition from mechanical to electronic switching by 1992.

Although the system is relatively cheap to install, because there is no electronic switching.