US 7,254,110 B2 · Pots extender for voice fallback in a subscriber line

Abstract

A full services access multiplexer is described. A master digital subscriber line (master DSL) modem is coupled to a conductor pair. A POTS extender also is coupled to the conductor pair and may sense the operation of a fallback or other signal on the conductor pair. A suppression signal may be transmitted to a master DSL modem upon occurrence of the fallback. The suppression signal may travel over a control circuit. Traffic over a backplane or other network segment may be uninterrupted to a Integrated Access Device (IAD) by handling signals inbound and outbound to the backplane via a packet assembler and disassembler (PAD). The PAD may transmit a data stream to a vocoder and receive a data stream from the vocoder for injection onto the backplane. The vocoder connects duplexed traffic to the subscriber line interface circuit (SLIC) wherein traffic between the vocoder and the SLIC are in analog formats in or near the audible range of frequencies.

Claims8

Dependent claims

A DSL suppression circuit for suppressing DSL mode operation on a local loop comprising:

a loop current detector for sensing current drain on the local loop;
a means for providing a suppression signal controllable by said loop current detector;
and
a master DSL modem operative coupled to a subscriber line interference circuit (SLIC), said master DSL modem operating in a quiescent state upon receiving the suppression signal, wherein the SLIC provides power to a subscriber line during the quiescent state.

1 more element

Dependencies are inferred from the claim text.

Pots extender for voice fallback in a subscriber line

Life of this patent

Pots extender for voice fallback in a subscriber line

Life of this patent

Abstract

Claims8