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Chapter 14. open network operations, 1 overview, 2 intelsat business service (ibs) – Comtech EF Data CDM-625 User Manual

Page 371

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14–1

Chapter 14. OPEN NETWORK

OPERATIONS

14.1 Overview

This chapter summarizes the functionality and specifications of the Intelsat Business Service

(IBS), Drop and Insert (D&I), and Intermediate Data Rate (IDR) Open Network framing modes.

14.2 Intelsat Business Service (IBS)

Primary Data Rates Supported

G.703

1544, 2048, 6312 and 8448 kbps SD, RD

EIA-422, V.35, LVDS

N x 64 kbps SD, RD (up to 8448 kbps)

ADPCM Audio (2 Channels)

64 kbps only, full duplex

Engineering Service Channel

Earth Station-to-Earth

Station Channel

EIA-232 data synchronous at 1/480 of the primary data

EIA-232 data asynchronous at 1/2000 of the primary data

High Rate Engineering Service Channel

ESC Data Interface Type

Async – configurable asynchronous character format, EIA-232 at up to

1/20

th

of primary data rate

ESC Data Rate

Example: 2400 baud at 64 kbps

Faults and Alarms

Satellite Backward Alarm

1 (per IESS-309)

Receive BWA Output

Enabled onto terrestrial secondary alarm