DIN ETS 300139:1992-12
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DIN ETS 300139:1992-12

Integrated Services Digital Network (ISDN); Call Hold (HOLD) supplementary service; service description; english version ETS 300139:1992

Summary

The document deals with the stage 1 description of the Call Hold supplementary service in the pan-European ISDN. This supplementary service allows a user to interrupt communications on an existing call and then subsequently, if desired, re-establish communications.

Technical characteristics

Publisher Deutsche Institut für Normung e.V. (DIN)
Publication Date 12/01/1992
Page Count 18
EAN ---
ISBN ---
Weight (in grams) ---
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