The document proposes a solution to migrate legacy traffic for ethio Telecom to a new hybrid IP and packet backhaul network. Key points of the proposal include:
1) Replacing legacy microwave backhaul with a new hybrid system and mapping legacy TDM traffic to CES over IP while keeping 2G/3G as packet traffic.
2) Legacy services like MISU, CDMA and PSTN will be carried over the new network using CES to encapsulate TDM signals for transport over IP.
3) The solution will require configurations of network elements like TCUs, SPs, TN nodes and Tellabs equipment to implement CES mapping and ensure services continue functioning over the new infrastructure