NA 022
DKE German Commission for Electrical, Electronic & Information Technologies of DIN and VDE
DIN ETS 300659-2 [Withdrawn] references following documents:
| Document number | Edition | Title |
|---|---|---|
| ETR 206 | 1995-09 | Public Switched Telephone Network (PSTN) - Multifrequency signalling system to be used for push-button telephones (CEPT T/CS 46-02 E-1985) More |
