T
T reference point

Used with an S reference point to change a 4-wire ISDN network to a two-wire ISDN network.

T1

Digital WAN that uses 24 DS0s at 64K bps each to create a bandwidth of 1.536Mbps, minus clocking overhead, providing 1.544 Mbps of usable bandwidth.

T3

Digital WAN that can provide bandwidth of 44.763 Mbps.

TACACS+

Terminal Access Controller Access Control System Plus: An enhanced version of TACACS, this protocol is similar to RADIUS. See also: RADIUS.

tagged traffic

ATM cells with their cell loss priority (CLP) bit set to 1. Also referred to as Discard Eligible (DE) traffic in frame relay networks. Tagged traffic can be eliminated in order to ensure trouble-free delivery of higher priority traffic, if the network is congested. ...

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