NA 022
DKE German Commission for Electrical, Electronic & Information Technologies of DIN and VDE
DIN ETS 300356-19 Berichtigung 1 [Withdrawn] references following documents:
| Document number | Edition | Title |
|---|---|---|
| ITU-T Q.734.1 | 1993-03 | Stage 3 description for multiparty supplementary services using Signalling System No. 7 : Conference calling More |
