| 1/00 | Frequency-division multiplex systems (
H04J 14/02 takes precedence) |
| 1/02 | Frequency-division multiplex systems (
H04J 14/02 takes precedence) Details |
| 1/04 | Frequency-division multiplex systems (
H04J 14/02 takes precedence) Details Frequency-transposition arrangements |
| 1/05 | Frequency-division multiplex systems (
H04J 14/02 takes precedence) Details Frequency-transposition arrangements using digital techniques |
| 1/06 | Frequency-division multiplex systems (
H04J 14/02 takes precedence) Details Arrangements for supplying the carrier waves |
| 1/08 | Frequency-division multiplex systems (
H04J 14/02 takes precedence) Details Arrangements for combining channels |
| 1/10 | Frequency-division multiplex systems (
H04J 14/02 takes precedence) Details Intermediate station arrangements, e.g. for branching, for tapping-off |
| 1/12 | Frequency-division multiplex systems (
H04J 14/02 takes precedence) Details Arrangements for reducing cross-talk between channels |
| 1/14 | Frequency-division multiplex systems (
H04J 14/02 takes precedence) Details Arrangements providing for calling or supervisory signals |
| 1/16 | Frequency-division multiplex systems (
H04J 14/02 takes precedence) Details Monitoring arrangements |
| 1/18 | Frequency-division multiplex systems (
H04J 14/02 takes precedence) in which all the carriers are amplitude-modulated (H04J 1/02 takes precedence) |
| 1/20 | Frequency-division multiplex systems (
H04J 14/02 takes precedence) in which at least one carrier is angle-modulated (H04J 1/02 takes precedence) |
| 3/00 | Time-division multiplex systems (
H04J 14/08 takes precedence) |
| 3/02 | Time-division multiplex systems (
H04J 14/08 takes precedence) Details |
| 3/04 | Time-division multiplex systems (
H04J 14/08 takes precedence) Details Distributors combined with modulators or demodulators |
| 3/06 | Time-division multiplex systems (
H04J 14/08 takes precedence) Details Synchronising arrangements |
| 3/07 | Time-division multiplex systems (
H04J 14/08 takes precedence) Details Synchronising arrangements using pulse stuffing for systems with different or fluctuating information rates |
| 3/08 | Time-division multiplex systems (
H04J 14/08 takes precedence) Details Intermediate station arrangements, e.g. for branching, for tapping-off |
| 3/10 | Time-division multiplex systems (
H04J 14/08 takes precedence) Details Arrangements for reducing cross-talk between channels |
| 3/12 | Time-division multiplex systems (
H04J 14/08 takes precedence) Details Arrangements providing for calling or supervisory signals |