Cisco UBR7225VXR Hardware Installation Manual page 180

Glossary
T
Digital WAN carrier facility. T1 transmits DS1-formatted data at 1.544 Mbps through the telephone
T1
switching network.
Technical Assistance Center.
TAC
Time of day.
ToD
Trivial File Transfer Protocol.
TFTP
U
Universal broadband router.
UBR
Unshielded twisted-pair.
UTP
V
Voice over IP.
VoIP
Virtual private network.
VPN
Voice Extension Ready.
VXR
X
A test point that is established by inserting a test signal of known amplitude into a fiber node and then
X-level test point
measuring the output level amplitude at the headend optical receiver.
Cisco uBR7225VXR Universal Broadband Router Hardware Installation Guide
GL-6
OL-17309-01