Data Rates

A number of terms and abbreviations are also used for data rates.  This can also be a confusing area, but the following table offers a little insight:

Term

Line Rate

Also known as/Comparable to

E1

2.048 Mbps

 

T1

1.544 Mbps (24 x 64 kbps)

DS1

T2

6.312 Mbps

DS2

T3

44.736 Mbps

DS3

Ethernet

10 Mbps

 

Fast Ethernet

100 Mbps

 

Token Ring

4 or 16 Mbps

 

DS0

64 kbps

 

DS1

1.544 Mbps

T1

DS2

6.312 Mbps

T2

DS3

44.736 Mbps

T3

OC-1

51.84 Mbps

STS-1

OC-3

155.52 Mbps

STS-3 & STM-1

OC-12

622.08 Mbps

STS-12 & STM-4

OC-24

1244.16 Mbps

STS-24 & STM-8

OC-48

2488.32 Mbps

STS-48 & STM-16

OC-96

4976.64 Mbps

STS-96 & STM-32

OC-192

9953.28 Mbps

STS-192 & STM-64

ISDN Basic (2B+D)

2 x 64 kbps & 1 x 16 kbps

 

ISDN B Channel

64 kbps

 

ISDN D Channel

16 kbps

ISDN Signalling Channel

ISDN Primary (24B+D)

24 x 64 kbps & 1 x 16 kbps

 

Sonet

51.84 Mbps - 10 Gbps

 

SDH

155 Mbps - 10 Gbps

 

PDH

T1/E1 - 565 Mbps