AN388| Application Note
Maxim > App Notes > TELECOM Keywords: hitless protection, redundancy, backup, relay, primary, T1 E1 transceivers, hot swap protection
Oct 02, 2006
APPLICATION NOTE 388
Hitless Protection Switching with 1+1 Redundancy
Abstract: This application note discusses how to connect various Dallas Semiconductor T1/E1/J1 single-chip transceivers (SCTs) or line interface units (LIUs) for 1+1 redundancy. It contains a simple hardware design without relays and software register settings for specific devices. A designer can use these drawings to implement an operational system quickly.
Overview
Hitless protection describes the ability to switch between the primary and backup line card without losing framing synchronization when a primary line-card failure occurs. This feature ensures that telecommunications equipment will provide uninterrupted or continuous service and maintain an extremely high-reliability rating.
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