ADTRAN L128T user manual Zip

Glosssary

U-interface

A twisted pair subscriber loop that connects the NT1 reference point to the ISDN network, as defined in the I.411 Recommendation. This interface pro- vides Basic Rate Access with an operating frequency of 160 kbps and an infor- mation rate of 144 kbps. Under U.S. regulations, this also marks the line of demarcation between customer-owned equipment and the public network.

ZIP

Zone Information Protocol. The AppleTalk session-layer protocol used to maintain and discover the internet-wide mapping of network number ranges to zone names.

Zombie Routes

Routes that have been identified by the router to be deleted. They remain in the router’s route table for a specified amount of time with an infinite metric so that all other routers will learn of this router’s intention to delete them.

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