SONET Systems CET 533
North American Digital Hierarchy and SONET TypeChannelsData Rate DS-0164 Kbits/sec DS Mbits/sec DS Mbits/sec OC-1*1 DS Mbits/sec 560 System; 560 Mbps; 8064 DS0 = 336DS1 = 12 DS3
Optical Leve l Electrical Level Line Rate (Mbps) Payload Rate (Mbps) Overhead Rate (Mbps) SDH Equival ent OC-1STS OC-3STS STM-1 OC-12STS STM-4 OC-48STS STM-16 OC-192STS STM-64 OC-768STS STM-256 SONET and SDH SONET is short for Synchronous Optical NETwork the United States version of the standard published by the American National Standards Institutue SDH is an acronym for Synchronous Digital Hierarchy international version of the standard published by the International Telecommunications Union
Segments of a SONET network Linear Topology Add / Drop Multiplexers Line/Path Terminating Element
STS Frame 90 Bytes
STS -1 Frame (9x90x8) bits/frame x8000 samples/frame = Mbps
SONET Overheads
STS-1 and its position in SPE Transport overhead includes Section and Line overheards
Section and Path Overhead Read
Line Overhead
Interleaved parity code (BIP-8) byte Applications
SONET Hierarchy - VT1.5 1.7 Mbps (equivalent to a DS1) - VT is virtual tributary (VT1.5, VT2, VT6)
SONET MUX With different Interfaces
SONET Ring Application www2.embarq.com/wholesale/socr.html Two SONET rings connected together