Abstract: A method designated as Dynamic Rate Repartitioning (DRR) is provided, which allows temporary allocation of temporarily not-in-use time-multiplex based transmission channels of telephone or ISDN-links like channeled voice over DSL/CVoDSL to a simultaneously active ATM-link, in an SDSL/SHDSL- or ADSL frame of a corresponding DSL-link. The method increases the data rate and makes a more intensive use of the transmission capacity of the DSL-link. Switching is carried out with frame synchronization and without data loss, wherein bit positions can be maintained.

Abstract: A method for transmitting data in bit-synchronous fashion using a binary signal whose bit transitions appear in the middle of each bit interval is described. Signals are assigned to certain bits forming a composite signal for transmission. For the durations of the bits, after every quarter bit period and after every three quarter bit period, the amplitudes of the assigned signals exceed a predetermined threshold value. For the durations of bits having no signals assigned thereto, the values of the assigned signals do not exceed the threshold values. After half bit and whole bit periods, the values of the assigned signals equal zero.