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Active standard | Published: 15/09/1995
ETSI ETR 203-ed.1
Public Switched Telephone Network (PSTN); Messages and formats for push-button dialling [CEPT Recommendation T/CS 28-01 E (1980)]
Available languages: English
Available design: PDF - Immediate download, Print design
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Detail information
Designation: ETSI ETR 203-ed.1
Publication date: 15/09/1995
Pages: 7
Country: European technical standard
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