NA 022
DKE German Commission for Electrical, Electronic & Information Technologies of DIN and VDE
DIN ETS 300557 [Withdrawn] references following documents:
| Document number | Edition | Title |
|---|---|---|
| ITU-T V.26ter | 1988-11 | 2400 bits per second duplex modem using the echo cancellation technique standardized for use on the general switched telephone network and on point-to-point 2-wire leased telephone-type circuits More |
| ITU-T X.21 | 1992-09 | Interface between data terminal equipment and data circuit-terminating equipment for synchronous operation on public data networks More |
