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T1
Transmission rate of 1.544 Mbps on T1 communication lines. A T1 facility carri-
ers a 1.544 Mbps digital signal. Also referred to as digital signal level 1 (DS-1).
See also E1.
trunk line
A communications line connecting two frame relay switches to each other.
VT 100
A non-intelligent terminal or terminal emulation mode used for asynchronous
communications. Used to configure the Express 5200.
61202175L1-1
Express 5200 User Manual
Appendix D.Glossary
D-9
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