Tip of the Week:
Here is a quick refresher and reference guide for ITU-T G.709 OTN nomenclature
OUT
ODU
Rate
Signal Rate OUT
Payload Rate ODU
Client Payload
0
1.25G
NA
1.23Gbps
1GigE LAN
OTU1
1
2.5G
2.666Gbps
2.488Gbps
OC-48/STM-16
OTU1e
1e
10G
11.049Gbps
10.312Gbps
10GigE LAN
OTU1f
1f
10G
11.270Gbps
10.518Gbps
10G Fibre Channel
OTU2
2
10G
10.709Gbps
9.953Gbps
OC-192/STM-64
OTU2e
2e
10G
11.095Gbps
10.312Gbps
10GigE LAN
OTU2f
2f
10G
11.317Gbps
10.518Gbps
10G Fibre Channel
OTU3
3
40G
43.018Gbps
39.813Gbps
OC-768/STM-256
OTU3e1
3.00E+01
40G
44.570Gbps
4×10.312Gbps
4xODU2e
OTU3e2
3.00E+02
40G
44.583Gbps
16×2.488Gbps
4xODU2e
OTU4
4
100G
111.809Gbps
104.794Gbps
100GigE
OTL(OTU).n
where n is the number of lanes that are used to multiplex up to the OTU level
Example OTL4.4
100GE system with 4 lanes or wavelengths (assuming 2 fibers) at 24.883Gbps
Example OTL4.10
100GE system with 10 lanes or wavelengths (assuming 2 fibers) at 9.953Gbps
ODU – Optical Data Unit
OTN – Optical transport Node
OTL – Optical Chanel Transport Lane
Also Note, our new website now has a Tips of the Week blog where I will be posting all tips and you can comment on them there or simply email me your comments or questions.
Older Tips will be posted eventually, when I get time.
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