
Glossary
Glossary-9
3170-A2-GB20-30
March 1999
V.54 Loop 2
A CCITT standard for a data channel loopback (DCLB).
V.54 Loop 3
A CCITT standard for a data terminal loopback (DTLB).
WAN
Wide Area Network. A network that spans a large geographic area (e.g., a country).
warmStart trap
An SNMP trap that indicates that the device has reinitialized itself.
wireless communications
The transmission of voice and/or data over the airwaves.
XTXC
External Transmit Clock. V.24 circuit 113.
1in8 Test
A test pattern consisting of a one (1) followed by seven zeros (on the network
only).
511 Test
A pseudo-random bit sequence (PRBS) that is 511 bits long (on the data ports
only). This is a PRBS 2
9
–1 test.