Amendment 2 to Recommendation G.872 provides modifications to clause 9 to describe the resources used to convey ODUk signals as a single layer network. This revised clause also describes the new 1.25Gbit/s TS structure and some considerations on interworking with the existing 2.5Gbit/s. The new ODUk signals, e.g. ODU0, ODU4 and ODUflex are also described. A new appendix IV to describe some multi domain network examples.