NonStop NS-Series Servers Site Preparation (H06.03+)

Glossary
HP Integrity NonStop NS-Series Site Preparation Guide—527836-005
Glossary-12
wide area network (WAN) subsystem
wide area network (WAN) subsystem. The Subsystem Control Facility (SCF) subsystem
for configuration and management of WAN objects in G-series release version updates
(RVUs).
wye. A polyphase electrical supply where the conductors of the source transformer are
connected to the terminals in a physical arrangement that resembles the letter Y. Each
point of the Y represents the connection for a conductor at high potential. The angle of
phase displacement between each point on the Y is 120 degrees. The center point of
the Y is the common return point for the neutral conductor.
wye-delta. The interconnections between a wye source and a delta load.
X.21. A digital signaling interface recommended by the International Telecommunications
Union, Telecommunication Standardization Sector (ITU-T) that includes specifications
for data terminal equipment/data communications equipment (DTE/DCE) physical
interface elements, alignment of call control characters and error checking, elements of
the call control phase for circuit switched services, data transfer at or below 9600
bits/second, and test loops.