Accession Number:

ADA093293

Title:

National Airspace Data Interchange Network (NADIN) Communications Support for Flight Service Automation System.

Descriptive Note:

Final rept. 1979-1980.

Corporate Author:

NETWORK ANALYSIS CORP VIENNA VA

Personal Author(s):

Report Date:

1980-11-01

Pagination or Media Count:

217.0

Abstract:

The FSAS service was analyzed to determine NADIN enhancements required to support FSAS data communications. The analysis yielded the following conclusions 1 The NADIN backbone architecture fits FSAS needs and requires no change however, the NADIN switch to concentrator line speeds need to be increased from 4.8 to 9.6 Kbitssecond 2 The FSAS file transfers may cause relatively long delays to Service B and AFTN messages. By having the switches systematically intersperse frames of messages going to different concentrator input circuits, the delay effects of these file transfers can be minimized 3 Control of AWP message transmissions is recommended. Flow control will result in a more efficient use of the processing and memory resources of NADIN switches and 4 The AWP and FSDPS software should be designed to enable the AWPs to interrupt large weather file transmissions to send shorter messages. Author

Descriptors:

• *INFORMATION TRANSFER
• *DATA TRANSMISSION SYSTEMS
• *COMMUNICATIONS NETWORKS
• AUTOMATION
• QUEUEING THEORY
• DATA MANAGEMENT
• COMMUNICATIONS TRAFFIC
• AIR TRAFFIC CONTROL SYSTEMS
• AIR SPACE
• COMPUTER FILES
• MESSAGE PROCESSING

Subject Categories:

• Non-Radio Communications

Distribution Statement:

APPROVED FOR PUBLIC RELEASE