DSx (Digital Signal X)
A standard for signaling and multiplexing of data on digital communications circuits.
The DSx standard is derived from: ANSI T1.107.
DSx data rates are multiples of one DS0 = one 64 Kbps channel.
A DS0 normally carries one phone voice channel or 64Kbps of data.
A DS3 (also known as a T3 Line) is an ultra high-speed connection that is capable of transmitting data at rates as fast as up to 45 Mbps which is equivelent to 28 T1 circuits.
A standard for signaling and multiplexing of data on digital communications circuits.
The DSx standard is derived from: ANSI T1.107.
DSx data rates are multiples of one DS0 = one 64 Kbps channel.
A DS0 normally carries one phone voice channel or 64Kbps of data.
A DS3 (also known as a T3 Line) is an ultra high-speed connection that is capable of transmitting data at rates as fast as up to 45 Mbps which is equivelent to 28 T1 circuits.
| ID | Speed | Num DS0 | E/T Equiv |
| DS0 | 64 Kbps | 1 | - |
| DS1 | 1.544 Mbps | 24 | T1 |
| - | 2.048 Mbps | 32 | E1 |
| DS1c | 3.152 Mbps | 48 | - |
| DS2 | 6.312 Mbps | 96 | T2 (4 T1) |
| - | 8.448 Mbps | 128 | E2 (4 E1) |
| - | 34.368 Mbps | 512 | E3 (4 E2 or 16 E1) |
| DS3 | 44.736 Mbps | 672 | T3 (28 T1) |
| - | 139.264 Mbps | 2048 | E4 (4 E3 or 64 E1) |
| DS4/NA | 139.264 Mbps | 2176 | - |
| DS4 | 274.176 Mbps | 4032 | - (168 T1) |
| - | 565.148 Mbps | 8192 | E5 (4 E4 or 256 E1) |
Comments
333T1 capacities chart
Another great item I didn't see any where is the Peak-Peak voltage or dbdsx signal levels. IE on a T1 it should be 3 volts peak to peak whick is 0 dbdsx. If it lower that -8 or more many equipment types can't see it or run well. A CSU Customer service unit boosts it to 0 dbdsx so it will work.
Also HDSL circuits are actually 2 lower speed circuits that make up a T1. Each runs on 1 pair of wires. So half of the time slots can fail but the other are ok. The HDSL unit can be optioned hi-low or odd even whick determines the time slots at DS0 level you will loose.
Keep up the good data on the site.
Jim Stack