PRETS 300 659-2 : JUN 97
Superseded
A superseded Standard is one, which is fully replaced by another Standard, which is a new edition of the same Standard.
A superseded Standard is one, which is fully replaced by another Standard, which is a new edition of the same Standard.
PUBLIC SWITCHED TELEPHONE NETWORK (PSTN) - SUBSCRIBER LINE PROTOCOL OVER THE LOCAL LOOP FOR DISPLAY (AND RELATED) SERVICES; PART 2: OFF-HOOK DATA TRANSMISSION
07-23-2013
01-12-2013
Definition of the protocol for off hook data transmission on analogue lines required to support display services such as calling line Identification Presentation for the PSTN.
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