CDM-625A Advanced Satellite Modem MN-CDM625A
Appendix P Revision 4
P–4
P.3.1 D&I Primary Data Interfaces
When configured for D&I operation, multiplexing/demultiplexing follows the IBS satellite frame
structure and ESC features, but with the following changes:
• It accepts and outputs primary data through the G.703 connectors.
• The data rate must be at T1 or E1 rates only. This includes additional links for Drop Data Out
and Insert Data In.
• Clock recovery, dejitter, and encoding/decoding are performed as before.
P.3.2 D&I Framing
The IBS satellite framing/deframing is applied only to selected time slots of the data’s G.704
terrestrial structure.
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