PREN 300 369-1 : 1.2.1
Superseded
A superseded Standard is one, which is fully replaced by another Standard, which is a new edition of the same Standard.
A superseded Standard is one, which is fully replaced by another Standard, which is a new edition of the same Standard.
INTEGRATED SERVICES DIGITAL NETWORK (ISDN); EXPLICIT CALL TRANSFER (ECT) SUPPLEMENTARY SERVICE; DIGITAL SUBSCRIBER SIGNALLING SYSTEM NO. ONE (DSS1) PROTOCOL; PROTOCOL SPECIFICATION
23-07-2013
12-01-2013
To produce an extension to stage 3 ETS 300 369-1 required to provide the supplementary service at the T reference point and to remove restrictions concerning the auxilairy states.
Access your standards online with a subscription
Features
-
Simple online access to standards, technical information and regulations.
-
Critical updates of standards and customisable alerts and notifications.
-
Multi-user online standards collection: secure, flexible and cost effective.