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T3 Interfaces Overview
T3 is the physical layer protocol used by the Digital
Signal level 3 (DS3) multiplexing method in North America. A T3 interface
operates at a bit rate of 44.736 Mbps. The JUNOS software supports
payload scrambling and subrate operation on each physical T3 interface.
One encapsulation format—Point-to-Point Protocol (PPP), Frame
Relay, or High-level Data Link Control (HDLC)—must be configured
for the interface. DS3 standards supported include:
- ANSI TI.107, TI.102
- GR 499-core, GR 253-core
- Bellcore TR-TSY-000009
- AT&T Pub 5404
- ITU G.751, G.703, G823
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