data-center-soc-noc , networking

Network Connection Speeds detailed.

March 4, 2010

  

Carrier Technology

Speed

Physical Medium

Notes
Dial-up AccessPlain Old Telephone System (POTS) 2400 bps to 56 Kbps Twisted Pair On demand access. Switched 56
Requires modem and POTS line.
Slow and varies with line quality.
Switched 56 2400 bps to 56 Kbps   Requires modem and POTS line. Slow and varies with line quality.
Switched Multimegabit Data Service (SMDS) 2400 bps to 56 Kbps   Requires modem and POTS line. Slow and varies with line quality.
FTO / DS0 2.4 Kbps to 64 Kbps Twisted Pair Requires DSU/CSU
ISDN 64 Kbps to 128 Kbps Twisted Pair Requires 2 dedicated POTS lines.
Requires router.
56K ISDN line is faster than a 56K dialup, barely.
2 DS0s = 1 ISDN
ISDN Dual Channel 128 Kbps Twisted Pair Requires 2 dedicated POTS lines. Requires router.
DSL 128 Kbps to 8 Mbps Twisted Pair Uses the digital portion of POTS line.
  ADSL is generally just referred to as DSL
ADSL Down Stream speed 6 to 8 Mbps
HDSL Up Stream speed 64 Kbps.
SDSL Requires modem.
VDSL May require line filter.
  Bandwidth is dedicated, sometimes fixed and maybe affected by distance from CO.
LocalTalk 230.4 kbs Twisted Pair Uses the digital portion of POTS line.
Asymmetric Digital Subscriber Line (ADSL) Upstream 640 kbs – 10b mbs   Requires ADSL / DSL cable modem.
Cable 512 Kbps to 20 Mbps Coaxial Cable Requires cable modem.
Can be Networked.
Shared bandwidth.
Ethernet   Twisted Pair  
  Coaxial Cable
10BaseT Mbps1.25  
100BaseT Mbps12.5  
1000BaseT Mbps125  
10G Ethernet (IEEE 802.3ae) 10 gbps    
PCS Wireless 2-30 Mbps + Airwaves Requires transmitter / receivers with antennas.
IEEE 802.11 wireless (A – G band) 2 -54 Mbps +
(LMCS) Home = 10Mbps
Satellite 6 Mbps or more Airwaves Requires outside antenna / dish and decoder box.
May require POTS line for first leg of transmission.
May have high latency.
Frame Relay 56 Kbps to 1.544 Mbps + Varies Provides “party line” connection to INet.
Requires FRAD unit or DSU/CSU device
Connects using T1 – OC3
T1 Fractional 64 Kbps to 1.544 Mbps Twisted Pair Only a select portion of the 23 channels available are actually used.
Coaxial Cable Expandable in 56Kbps or 64Kbps increments.
  a.k.a FT1
  This is a flexible DS1
T1 / DS1 1.544 Mbps Twisted Pair Requires DSU/CSU
Coaxial Cable Requires Router
Fiber Optic Requires 24 DS0 lines.
  a.k.a DS1
T2 / DS-2 6.312 Mbps    
T3 44.736 Mbps Optical Fiber 28 T1s
a.k.a DS3
T-4 / DS-4 274.176 Mbps Optical Fiber DS-4 (178 T-1)
OC-1 51.84 Mbps Optical Fiber Backbone
FDDI 100 Mbps Optical Fiber  
OC-3 / STM-1 155.52 Mbps Optical Fiber Requires 84 T1s
OC-9 / STM-3 466.560 mbps Optical Fiber Backbone
OC-12 / STM-4 622 Mbps Optical Fiber Requires 4 OC3s
= 336 T1s
OC-18 933.120 mbps Optical Fiber Backbone
OC-24 / STM-8 1.244 gbps Optical Fiber Backbone
OC-36 / STM-12 1.866 gbps Optical Fiber Backbone
OC-48 / STM-16 2.5 Gbps Optical Fiber Requires 4 OC12s
= 1,344 T1s
OC-96 / STM-32 4.976 gbps Optical Fiber Backbone
OC-192 / STM-64 9.6 Gbps Optical Fiber Requires 4 OC48s
= 5,376 T1s
OC-256 13.271 Gbps Optical Fiber Backbone
OC-768 39.813 Gbit/s Optical Fiber Backbone
OC-1536 79.6 Gbit/s Optical Fiber Backbone
OC-3072 159.2 Gbit/s Optical Fiber Backbone

 

Legend
BRI Basic Rate Interface (ISDN)
CSU Channel Service Unit
DS0 Dedicated Service
DSU Digital Service Unit
DSU/CSU Digital Service Unit to Channel Service Unit
FDDI Fiber Distributed-Data Interface
FRAD Frame Relay Access Device
FT1 Fractional T1
ISDN Integrated Services Digital Network
LMCS Local Multi-point Communications System
OC Optical Carrier
POTS Plain Old Telephone Service
 
kbps kilobits per second. (kilo = thousands)
Mbps Megabits per second. (Mega = millions)
MBps Megabytes per second. (Mega = millions)
Gbps Gigabits per second. (Giga = billions)