ODU1 and ODU2 Definition

 ODU1 Definition 

Original tier of the hierarchy to transport 2.5G signals  

•ODU1 = 2.498775Gbit/s 

•OTU1 = 2 666057Gbit/s 

 OTU1 can be used as a higher order ODU to carry lower order ODU0s  

•Divided into 2x1.25G tributary slots: 

•ODU0 maps into 1 tributary slot 

 OPU1 can carry:  

•STS-48 

•STM-16 

•FC-200 

 ODU2 Definition 

Original tier of the hierarchy to transport 10G signals  

•ODU2 = 10.037273Gbit/s 

•OTU2 = 10 709224Gbit/s 10.709224Gbit/s 

Can be used as a higher order ODU to carry lower order ODUs  

•Divided into 4´2.5G or 8´1.25G tributary slots: 

•ODU0 maps into 1 tributary slot 

•ODU1 maps into 1 2.5G or 2 1.25G tributary slot(s)  OPU2 can carry:  

•STS-192 

•STM-64