SIS 11-1989
Telecommunications equipment — Private Branch Exchanges (PBXs)
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SIS 11-1989
Standard No.
SIS 11-1989
Release Date
1989
Published By
SE-SIS
Latest
SIS 11-1989
SIS 11-1989 history
1989
SIS 11-1989
Telecommunications equipment — Private Branch Exchanges (PBXs)
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