Apparatus for utilizing spare E1 channels
AssigneeAT&T Corp.
InventorsEthan I. Dashiff, Victoria Y Jin, Lucy Ann Tscherne
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Abstract
An apparatus which enables a customer to transport data utilizing up to 7 channels which frequently go unused when 24 channels of unframed T1 data are transported utilizing 24 of the 32 channels available through E1 is disclosed. A multiplexer receives 24 64 Kbps channels of unframed T1 data at a first interface and up to 7 64 Kbps channels of data at a second interface. The data received at the first and second interfaces is multiplexed into 32 64 Kbps channels in accordance with the E1 standard.
Claims4
A multiplexer for providing a thirty-two channel telecommunications interface using one twenty-four channel interface and at least one standard user serial interface, comprising:
- a twenty-four channel interface;
- at least one standard user serial interface;
- and
- a thirty-two channel interface, wherein said multiplexer:
- receives a first plurality of channels at the twenty-four channel interface in a twenty-four channel format;
- couples the first plurality of channels to the thirty-two channel interface;
- multiplexes up to 7 user channels input to the at least one standard user serial interface with the first plurality of channels;
- receives a second plurality of channels at the thirty-two channel interface in a thirty-two channel format;
- couples the second plurality of channels to the twenty-four channel interface;
- demultiplexes up to 7 user channels from the second plurality of channels received at the thirty-two channel interface;
- and
- couples the demultiplexed up to 7 user channels to the at least one standard user serial interface.
Dependencies are inferred from the claim text.