ETR 220001 : 20001
Current
The latest, up-to-date edition.
PUBLIC SWITCHED TELEPHONE NETWORK (PSTN); REGISTER-RECALL
Hardcopy , PDF
English
Foreword
Endorsement notice
1 DEFINITION
2 GENERAL DESCRIPTION
3 TECHNICAL CHARACTERISTICS OF THE REGISTER-RECALL FEATURE
IN CONJUNCTION WITH THE BASIC MULTIFREQUENCY PUSH-BUTTON
SIGNALLING SYSTEM
4 TECHNICAL CHARACTERISTICS OF THE REGISTER-RECALL FEATURE
IN THE COMBINED BASIC MULTIFREQUENCY PUSH-BUTTON AND
DIRECT CURRENT SIGNALLING SYSTEM
History
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