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    12.
    发明专利
    未知

    公开(公告)号：DE69902321T2

    公开(公告)日：2003-01-30

    申请号：DE69902321

    申请日：1999-05-26

    Applicant: LUCENT TECHNOLOGIES INC

    Inventor： BODNAR BOHDAN LEW ,  HERSE CONRAD MARTIN ,  DUNN JAMES PATRICK ,  TAMMARU ENN

    IPC: H04L12/66 ,  H04Q11/04

    Abstract: Apparatus and a method for interfacing between the Internet and the Telephone Network. A time slot interchange (TSI) is enhanced by the addition of a supplementary memory (211) for storing data for accumulating Internet packets. When a packet has been accumulated, the appropriate header is inserted into the packet under the control of a routing processor (213), and the packet can then be sent as a group of adjacent PCM samples over a connection to the Internet. In other embodiments, information is sent to the Internet over a direct data pipe for transmitting ATM cells or Ethernet packets. A Vocoder signal processor (301) can be inserted between the TSI memory (103), and the supplementary memory to convert PCM voice samples into vocoded voice samples for transmission over the Internet. A modem signal processor (201) can be interposed between the TSI memory and the supplementary memory to convert between analog data (representing for example, shift key analog signals) and binary data for transmission within packets over the Internet. Advantageously, existing TSI units can be used to interface with both the telephone plant and the Internet.

    14.
    发明专利
    未知

    公开(公告)号：DE60009835D1

    公开(公告)日：2004-05-19

    申请号：DE60009835

    申请日：2000-08-21

    Applicant: LUCENT TECHNOLOGIES INC

    Inventor： DUNN JAMES PATRICK ,  ZHANG PENG

    IPC: H04B3/23 ,  H04L27/01 ,  H04M9/08

    Abstract: An echo canceling system (100) with self deactivation includes an echo canceller (140) based on an adaptive filter (152), and an echo detector (160). The adaptive filter (152) determines an estimate of an echo signal present in an untreated signal received from a "near" end of a communications channel. In order to produce an echo-canceled received signal, the echo canceller (140) subtracts the estimated echo from the untreated received signal. The echo detector (160) compares the energy of the untreated received signal and the energy of the echo-canceled received signal. The difference represents the energy in the estimated echo signal generated by the adaptive filter. If this energy is large, significant echo is present. The echo canceller remains activated, and the echo detector selects the echo-canceled received signal for output. If the estimated echo energy is small, little or no cancelable echo is present. The echo canceller is deactivated, and the echo detector selects the untreated received signal for output. Where plural channels of echo cancellation are provided, the deactivated echo canceller may be reallocated to service another communications channel.

    15.
    发明专利
    未知

    公开(公告)号：DE60100927D1

    公开(公告)日：2003-11-13

    申请号：DE60100927

    申请日：2001-05-22

    Applicant: LUCENT TECHNOLOGIES INC

    Inventor： BODNAR BOHDAN LEW ,  BYERS CHARLES CALVIN ,  DUNN JAMES PATRICK

    IPC: H04L12/46 ,  H04L12/56 ,  H04L12/26

    Abstract: Apparatus and a method for routing packets having destination addresses in their header. The routing modules of the router are of two types: simple routing modules which can only route packets whose destination address is stored in a limited memory of the module for storing corresponding output port addresses, and default modules which are used to find the identity of an output port for routing all other packets received by the simple routing modules of the router. Advantageously, the processing load of the simple routing modules is smoothed because these modules do not have to perform the complex searching functions required to find destination addresses not readily accessible in their memory. Advantageously, the single or small number of default routing modules can have sophisticated memory and processor facilities for searching over a very large number of destination addresses and for concentrating the process of sending queries to other routers for additional information.

    16.
    发明专利
    未知

    公开(公告)号：DE69901138T2

    公开(公告)日：2002-11-14

    申请号：DE69901138

    申请日：1999-07-20

    Applicant: LUCENT TECHNOLOGIES INC

    Inventor： BODNAR BOHDAN LEW ,  DUNN JAMES PATRICK ,  HERSE CONRAD MARTIN ,  TAMMARU ENN

    IPC: H04L12/46 ,  H04L12/56

    Abstract: A large router for routing datagrams. The large router comprises a plurality of router slices, each of which receives switches and transmits datagrams. Each router slice has a routing memory for routing the packets. If a packet is received whose destination address is not known to the receiving packet slice, the packet slice broadcasts a request for routing information for that datagram to the other packet slices of the large router and routes the packet in accordance with the received responses. Groups of slices are interconnected by a time slot interchange (TSI) unit, and groups of TSIs are interconnected by a time multiplexed switch. The router can consist of more than one switch; the switches being interconnected by high speed data links. Advantageously, the router, though composed of small slices, acts as if it were a single large high capacity entity.

    A LARGE PACKET SWITCH ROUTER
    19.
    发明专利
    A LARGE PACKET SWITCH ROUTER 未知

    公开(公告)号：CA2273736A1

    公开(公告)日：2000-01-30

    申请号：CA2273736

    申请日：1999-06-08

    Applicant: LUCENT TECHNOLOGIES INC

    Inventor： BODNAR BOHDAN LEW ,  DUNN JAMES PATRICK ,  HERSE CONRAD MARTIN ,  TAMMARU ENN

    IPC: H04L12/46 ,  H04L12/56

    Abstract: A large router for routing datagrams. The large router comprises a plurality of router slices, each of which receives switches and transmits datagrams. Each router slice has a routing memory for routing the packets. If a packet is received whose destination address is not known to the receiving packet slice, the packet slice broadcasts a request for routing information for that datagram to the other packet slices of the large router and routes the packet in accordance with the received responses. Groups of slices are interconnected by a time slot interchange (TSI) unit, and groups of TSIs are interconnected by a time multiplexed switch. The router can consist of more than one switch the switches being interconnected by high speed data links. Advantageously, the router, though composed of small slices, acts as if it were a single large high capacity entity.

    SWITCHING INTERNET TRAFFIC THROUGH DIGITAL SWITCHES HAVING A TIME SLOT INTERCHANGE NETWORK
    20.
    发明专利
    SWITCHING INTERNET TRAFFIC THROUGH DIGITAL SWITCHES HAVING A TIME SLOT INTERCHANGE NETWORK 未知

    公开(公告)号：CA2270091A1

    公开(公告)日：1999-12-05

    申请号：CA2270091

    申请日：1999-04-26

    Applicant: LUCENT TECHNOLOGIES INC

    Inventor： TAMMARU ENN ,  BODNAR BOHDAN LEW ,  DUNN JAMES PATRICK ,  HERSE CONRAD MARTIN

    IPC: H04L12/66 ,  H04Q11/04 ,  H04L12/56 ,  H04B14/04

    Abstract: Apparatus and a method for interfacing between the Internet and the Telephone Network. A time slot interchange is enhanced by the addition of a supplementary memory for storing data for accumulating Internet packets. When a packet has been accumulated, the appropriate header is inserted into the packet under the control of a routing processor, and the packet can then be sent as a group of adjacent PCM samples over a connection to the Internet. In other embodiments, information is sent to the Internet over a direct data pipe for transmitting ATM cells or Ethernet packets. A Vocoder signal processor can be inserted between the TSI memory, and the supplementary memory to convert PCM voice samples into vocoded voice samples for transmission over the Internet. A modem signal processor can be interposed between the TSI memory and the supplementary memory to convert between analog data (representing for example, shift key analog signals) and binary data for transmission within packets over the Internet. Advantageously, existing TSI units can be used to interface with both the telephone plant and the Internet.

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