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Active standard | Published: 15/03/1996
ETSI ETR 254-ed.1
Public Switched Telephone Network (PSTN); Signalling System R2; Signalling and circuit supervision via the European Communications Satellite (ECS) [CEPT Recommendation T/CS 42-09 E (1985)]
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Detail information
Designation: ETSI ETR 254-ed.1
Publication date: 15/03/1996
Pages: 10
Country: European technical standard
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