|
|
PDH/SDH Channelization
PDH Channelization
Digital Hierarchy |
Bit Rate |
Typical Structure |
|
| Usual
notation |
Exact
value |
||
E0 |
64 Kbps |
64 kbit/s |
1 voice channel |
E1 |
2 Mbps |
2 048 kbit/s |
30 channels of 64 kbit/s |
E2 |
8 Mbps |
8 448 kbit/s |
4 E1 |
E3 |
34 Mbps |
34 368 kbit/s |
16 E1 |
E4 |
140 Mbps |
139 264 Kbit/s |
64 E1 or 4 E3 |
Source: G.702 (UIT)
SDH Channelization
Digital Hierarchy |
Bit
Rate |
Typical
tributary structure |
|
|
Usual notation |
Exact value |
||
STM1 |
155 Mbps |
155 520 kbit/s |
63 E1 or 3 E3 |
STM4 |
622 Mbps |
622 080 kbit/s |
4 STM1 |
STM16 |
2.5 Gbps |
2 488 320 kbit/s |
16 STM1 or 4 STM4 |
STM64 |
10 Gbps |
9 953 280 kbit/s |
64 STM1, 16 STM4 or 4 STM16 |
Source: G.707 (UIT)
The channels of the PDH and SDH digital hierarchies might be used in a non-structured configuration, with the same bit rates of the full channels.
SONET x SDH Compatibility
Nomenclature |
SONET |
SDH |
| Tributary | VT: Virtual Tributary |
VC: Virtual Container |
| Electric Signal | STS: Synchronous Transport
Signal |
STM: Synchronous
Transport Module
|
| Optic Signal | OC: Optical Carrier |
| SONET |
Bit Rate (Kbit/s) |
SDH |
| VT1.5 |
1 544 |
VC-11 |
| VT2.0 |
2 048 |
VC-12 |
| VT3.0 |
3 152 |
- |
| VT6.0 |
6 312 |
VC-21 |
| - |
8 448 |
VC-22 |
| - |
34 368 |
VC-31 |
| - |
44 736 |
VC-32 |
| - |
139 264 |
VC-4 |
| STS-1 (OC-1) |
51 840 |
STM-0 |
| STS-3 (OC-3) |
155 520 |
STM-1 |
| STS-6 (OC-6) |
311 040 |
- |
| STS-9 (OC-9) |
466 560 |
- |
| STS-12 (OC-12) |
622 080 |
STM-4 |
| STS-18 (OC-18) |
933 120 |
- |
| STS-24 (OC-24) |
1 244 160 |
- |
| STS-36 (OC-36) |
1 866 240 |
- |
| STS-48 (OC-48) |
2 488 320 |
STM-16 |
| STS-96 (OC-96) |
4 976 640 |
- |
| STS-192 (OC-192) |
9 953 280 |
STM-64 |
Print this Page
Send this Page
Add to favorites
Communicate errors