Peripheral Products

4957A Protocol Analyzer

Emulators/Protocol Analyzers Selection:

Name: 4957A Protocol Analyzer
Product Number: 4957A
Introduced: 1991
Division: Colorado Telecommunications
Original Price: Unknown
Catalog Reference: 1992, page 599


The 4957A replaced the 4951C and 4952A in 1991. The 4957A handled the same protocols as the older machines, as well as IPARS and ISND.

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