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Synchronous Digital Hierarchy (SDH)

Subnetwork connection protection (SNCP)
Fiber Connection (FICON) over SDH (ISC1/ISC3)
E3 Signalling
ESCON over SDH
Fiber Channel over Synchronous Digital Hierarchy (FC over SDH)
2F Multiplex Section-Shared Protection Ring (MS-SPR)
4F Multiplex Section-Shared Protection Ring (MS-SPR)

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Technology Information
- Troubleshooting Guide for Synchronous Digital Hierarchy 02-Dec-2005
Operation and Troubleshooting
- ASR5000 Switchover of STM1/OC3 Channelized Cards with APS-Mode Redundancy 04-Jun-2018
- Inspection and Cleaning Procedures for Fiber-Optic Connections 30-Nov-2016
- Synchronous Digital Hierarchy (SDH) Graphical Overview 01-Oct-2006
- Introduction to Optical Fibers, dB, Attenuation and Measurements 20-Apr-2005
- Configuring J1 Bytes and Troubleshooting HP-TIM Alarms on POS Line Cards 21-Mar-2005