On a traditional transport network, muxponder boards convert client-side services into OTN signals. Generally, each client-side service occupies both a board and a wavelength, which reduces utilization of network resources. This figure shows client-side GE, STM-64 and 10GE signals occupying 100 Gbit/s of total bandwidth on a traditional transport network.

               

On an OTN network, different client-side services can be multiplexed to the same line board and wavelength, maximizing utilization of network resources. This figure shows client-side GE, STM-64 and 10GE signals occupying 100 Gbit/s of total bandwidth on an OTN network, with 100% bandwidth utilization.

             

 

According to your explanation, in a traditional transport network, for STM-64 & 10GE service two different line board required but in OTN, only 1 line board with 20G capacity required-----is it OK??? can you explain more?

According to your explanation, in a traditional transport network, for STM-64 & 10GE service two different line board required but in OTN, only 1 line board with 20G capacity required-----is it OK??? can you explain more?

tanjil Posted on 2015-08-05 16:48

hi, tanjil, thank you for your reply and Im sorry for the description was not clear, so the boards in the figure have been labled.

 

In a traditional transport network, we use the OTU boards (just like the 100G Muxponder) to access the services, like this:

In a OTN nwtwork, we use the Tributary boards and the line boards, as the followns

 

For example:

the client-side GE, STM-64 and 10GE signals occupying 100 Gbit/s of total bandwidth,

If in traditional network, we can use the 100G muxponder (which does not supports GE service ) to process the STM-64, 10GE services and the other muxponder to process the GE service. So there is more than one wavelength at the WDM-side.

If in a OTN network, we can use the tributary boards and a 100G line board. The tributary boards receives client-side services,  maps the services into ODUk signals (the total bandwidth is 100 Gbit/s). Then the 100G line board multiplexes and maps the ODUk signals into the OTU4 signal. For the 100G line board, the bandwidth utilization is high.

This is what we call it as granular services, to reduce wastage of resources. Huawei OTN is simply the best.