Acronym

Description

X.25

CCITT standard defining the interface between packet-type data terminal equipment and a public data network

X.nn

X.nn series of CCITT standards that relate to a connection of digital equipment to a public data network

XB

Crossbar switch

X-band

6.2 GHz to 10.9 GHz

XBAR

Crossbar (switching system)

XMS

A Northern Telecom Inc. operating system

XMS-PASCAL

A high level language for peripherals

XMT

Transmit

XOR

Exclusive-or

XPC

BX.25 Protocol Controller

XPT

Crosspoint

X-ray program

Hardware test program

X-ray translations

Selected translation information used with the X-ray test program

X-series

CCITT Recommendations for new data networks

X-talk

Crosstalk