IP over OTN or IP over DWDM?

Question

these are two main trend in IP core Network construction.
The core different between them is how to dealing with the TDM service or other small granularity service in electrical layer. in Router or in OTN?
What is your opinion? I find many expert or communication fancier here, so beg your answers.

Answer 1

The core different between them is how to dealing with the TDM service or other small granularity service in electrical layer. in Router or in OTN?
As per my knowledge, difference between IP over DWDM or IP over OTN is which method can take all type of traffic (voice, data, video etc ) in efficient way not just TDM service or granularity (ROuter cannot beat SONET/SDH boxes in handling TDM traffic).
Most of the traffic now a days is IP not TDM, whereas OTN are good for TDM
Question is what can take packet effieciently without too many layers in between. Whether to add IP feature to OTN or Transport feature to Router.
I have no answer who will win IP in router or OTN but IP over DWDM (In router ) will not be the best solution. This method is good for point to point High speed connection things will change if you have lot of traffic to crossconnect.
In other post you have question that how can you separate traffic on different wavelngths, what do you think will your router will act as a crossconnect to segregate different traffic or what if you need only 5 Gig to point A and 5 Gig to point B will the router grrom that traffic?