Packet Based Methods: Standardization Framework 2008-05-01 Packet Based Methods: Standardization Framework Frequency Sync Time/Phase Sync Application Packet based methods Arrangement Basic Requirements (Independent from protocols) CES (“traffic masks”) PNT (“x ppb”) Phase/Time (e.g. “0.1-1 ms”) Accurate Phase/Time (e.g. “0.x – x ms”) Specific requirements (dependent on Protocols Definition General With support from Network Nodes End-to-end (“sync mask”) Protocols details Work flow Implementations with PTP, NTP, Others (“Telecom Profiles”) - Performance related aspects (G.8264, G.8263?, G.8261? ) Network Architecture (G.8261) Network Modelling (G.8264) Clock Spec. (G.8263) Equipment Functions (G.8261, G.8264) Inputs from other standardization bodies Study area tecnhically relevant Study area could be technically relevant but probably is of lower interest Study area relates to a challenging scenario (technically possible in special cases) Target Requirements (G.8261) Sync Methods (G.8261) Network Limits (G.8261) Outside Q13 scope (e.g. IETF, IEEE) Traditional ToD (e.g. “50-100 ms”) Network Architecture (G.8265? G.826x?) Network Modelling (8265, G.826x) Clock Spec. (G.8263? G.826x ?) Equipment Functions (G.8265) Implementations with PTP, NTP, Others (“Telecom Profiles”) - Performance related aspects (G.8265, G.826x?) Target Requirements (G.8265?, G.826x?) Sync Methods (G.8265? G.826x?) Network Limits (G.8265?, G.826x?) Performance Related aspects Ericsson AB 2008

Input for drafting on Q13 Standardization Framework for Frequency Sync 2008-05-01 Input for drafting on Q13 Standardization Framework for Frequency Sync Recc. Main Contents What is missing How to address G.8261 Target Requirements Network Limits Sync Methods Detailed model to clarify where the PDV limits apply. PDV metrics and related network limits New Living List Via Amendment G.8262 SyncE Clocks completed - G.8263 Packet based clocks spec Clock model PSC, PEC, speifications New Clocks? New document G.8264 Modelling Functional blocks Equipment functions Details on use of protocols: for syncE (i.e. SSM) and for packet based (e.g. “IEEE1588 Telecom Profiles”: these could be handled in Annexes, one per application) Details on packet based methods incl. profiles New revision ? Ericsson AB 2008

2008-05-01 Input for drafting on Q13 Standardization Framework for Time-Phase Sync Recc. Main Contents What is missing How to address G.pactiming-bis Target Requirements Network Limits Sync Methods New document G.paclock-ter Time-Phase clocks spec (e.g. Boundary clock) G.8265 Functional blocks Modelling Equipment functions Details on use of protocols (e.g. “IEEE1588 Telecom Profiles”, NTP implementations; these could be handled in Annexes, one per application) Ericsson AB 2008