D&I Primary Data Interfaces; D&I Framing - Comtech EF Data SDM-300A Installation And Operation Manual

SDM-300A Satellite Modem
C.10.2 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:
•
C.10.3 D&I Framing
The IBS satellite framing/deframing is applied only to selected time slots of the data's
G.704 terrestrial structure.
Rev. 4
Accepts and outputs primary data through the 50-pin connector using G.703. 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.
Specifications
C–51