SS-ETS-300141 › Complete Document History
Integrated Services Digital Network (ISDN) - CallHold (HOLD) supplementary service - Digital Subscriber Signalling System No. one (DSS1) protocol


Obsolete Revision Information:
   ED. 1 CORRIGENDUM 2 - ENGLISH LANGUAGE EDITION - May 20, 1994
   ED. 1 CORRIGENDUM 1 - ENGLISH LANGUAGE EDITION - Sept. 30, 1993
   EDITION 1 - ENGLISH LANGUAGE EDITION - Nov. 16, 1992