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Reply To: E1


Dear, sairam!
It is the plain text, not encoded:
In the mentioned Recomendations you can found out what about you said.
G.703 – Physical/electrical characteristics of hierarchical digital interfaces.
G.704 – Synchronous frame structures used at 1544, 6312, 2048, 8448 and 44 736 kbit/s hierarchical levels.
with Best Regard, Pan