Alcatel USA Sourcing, L.p.

Dsc Telecom L.p.

Manouchehr Entezari

Stephen A Deschaine

Werner L Heissenhuber

Mark J Nietubyc

Rudolph B Klecka

Edward P Traupman

Clemente G Garcia

An interface unit (12) for interfacing a digital loop carrier (16) to a digital cross-connect (14) comprises a control interface (22) coupled between the digital cross-connect (14) and digital loop carrier (16) for conversion and communication of control messages therebetween. A timing interface (32) is further coupled between the digital cross-connect (14) and digital loop carrier (16) for generally synchronizing the operations thereof. Further, a matrix interface (30) is coupled between the digital cross-connect (14) and digital loop carrier (16) for converting data rates and formats of data in the digital cross-connect (14) and digital loop carrier (16), so that network signals received by the digital loop carrier (16) are converted from a first format to a second format and communicated by the matrix interface (30) to the digital cross-connect (14) for cross-connection, and cross-connected data are converted from the second format to the first format and communicated to the digital loop carrier (16).

Digital cross-connect system to digital loop carrier interface unit

Apparatus and method are provided which map E1 signals into a logical space of a predetermined number of DS1 signals. 24 selected DS0 signals that are part of each E1 signal are mapped into the space of one DS1 signal in the logical space. The remaining eight DS0 signals of every three E1 signal are then interleavingly mapped into the space of one DS1 signal in the logical space. Depending on the defined logical space, additional E1 signals are mapped into the logical space in the same manner until the predetermined number of DS1 signal spaces in the defined logical space are filled.

Apparatus and method for mapping high density E1 signals into a digital

Apparatus and method are provided which map E1 signals into a logical space of a predetermined number of DS1 signals. 24 selected DS0 signals that are part of the first E1 signal are mapped into the space of a first DS1 signal in the logical space. The 8 DS0 signals of the first E1 signal are then mapped into the space of a second DS1 signal in the logical space. Depending on the defined logical space, additional E1 signals may be mapped into the logical space of two DS1 signals in the same manner until the predetermined number of DS1 signal spaces in the defined logical space are filled.

Apparatus and method for mapping E1 signals into a digital cross-connect

Two T1 signals are mapped onto a subscriber bus (26) in a subscriber loop equipment (10) for transport between a bank control unit (20) and channel units (22), for example. The data channels and the signaling and control channels of the first T1 signal are mapped onto a first data stream, and the data channels and the signaling and control channels of the second T1 signal are mapped onto a second data stream. The data streams are bit-interleaved for transport on the subscriber bus (26).

Apparatus and method for mapping telecommunications signals onto a

In a subscriber loop equipment (10) having a subscriber bus (26), there is provided an odd data stream carrying a first set of data time slots of an E1 signal and a first set of signaling and control time slots of the E1 signal, and an even data stream carrying a second set of data time slots of the E1 signal and a second set of signaling and control time slots of the E1 signal. The odd and even data streams are bit-interleaved and transported on the subscriber bus (26).

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Flower Mound, TX, United States of America

Manouchehr Entezari