Estimated Rates for Various Network Technologies ------------------------------------------------------------------------------- Technology Theoretical Speed Realistic Speed Byte_speed ------------------------------------------------------------------------------- Modem 28.8 KBaud 2 KBps ISDN 128 Kbbs 10 KBps Frame Relay 256 256 Kbps 20 KBps Frame Relay 512 512 Kbps 39 KBps DS-0 (Voice channel, DDS) 64 Kbps T-1/DS-1(24 DS-0) 1.544 Mbps 115 KBps 180 KB T-2/DS-2(4 DS-1, 96 DS-0) 6.312 Mbps T-3/DS-3(7 DS-2,672 DS-0) 44.376 Mbps 3.4 MBps 5 MB T-4/DS-4(6 DS-3,4032 DS-0) 274.176 Mbps OC-1/STS-1 51 Mbps 6 MB OC-3/STS-3/STM-1 155 Mbps 19 MB OC-9/STS-9/STM-3 466.56 Mbps OC-12/STS-12/STM-4 622 Mbps 77 MB OC-18/STS-18/STM-6 933.12 Mbps OC-24/STS-24/STM-8 1.24 Gbps OC-36/STS-36/STM-12 1.87 Gbps OC-48/STS-48/STM-16 2.48 Gbps 310 MB OC-96/STS-96/STM-32 4.9 Gbps 620 MB OC-192/STS-192/STM-64 9.8 Gbps 1240 GB DWDM fibre 100 Tbps 12.5 TB ------------------------------------------------------------------------------- Ethernet (10BaseT) 10 Mbps 1.25 MBps 4.5 GBh FastEthernet (100BaseT) 100 Mbps 12.5 MBps 45.0 GBh GigabitEthernet (1000BaseT) 1000 Mbps 125.0 MBps 450.0 GBh 150 km GigabitEthernet (1000BaseT) 270.0 GBh real T1 0.6 GBh 10Mb 4.2 GBh T3 18.7 GBh 100Mb 41.9 GBh OC3 65.2 GBh OC12 260.7 GBh 1000 Mb (GbE) 419.1 GBh ------------------------------------------------------------------------------- FDDI 100 Mbps 8 MBps Fibre channel 1GB 100 MBps 1.06 GBps, 360 GBph, 10-80 km Fibre channel 2GB 200 MBps 2.13 GBps Fibre channel 4GB 800 MBps 4.25 GBps Fibre channel 10GB 2400 MBps 10.5 GBps CDDI 100 Mbps 8 MBps ATM 155 155 Mbps 11.6 MBps ATM 622 622 Mbps 50 MBps HIPPI-s 800 Mbps 60 MBps ------------------------------------------------------------------------------- DS is the digital service implemented on a T line of the same number (T-1 supports the service DS-1). DDS is the digital data service normall on a switched/56 line. The DS-X can be total multiplexed bandwith or a combination of grouping of the 56 lines. ------------------------------------------------------------------------------- ATM - asyncronous transfer mode ADSL - asymmetric DSL CDDI - copper distrubuted data interface CSU - channel service unit DDS - digital data service DSL - digital subscriber line DSU - digital service unit FDDI - fiber distrubuted data interface FTTC - fiber to the curb OC - optical carrier POTS - plain old telephone service SONET- syncronous optical network STM - sychronous tranport module - used for SONET -------------------------------------------------------------------------------