Bi-directional wire-line to local area network interface and method

  • US 5,410,754 A
  • Filed: 07/22/1993
  • Issued: 04/25/1995
  • Est. Priority Date: 07/22/1993
  • Status: Expired due to Term
  • ×
    • Pin
First Claim
Patent Images

1. An interface used between a remote host on a local area network (LAN), and a wire-line carrier system comprising:

  • a LAN media access control (LAN-MAC) and physical interface for converting data from said local area network to an outgoing-data packet with a machine readable format;

    a LAN transmission control protocol and internet protocol stack, coupled to said LAN-MAC and physical interface, for identifying a protocol type of the outgoing-data packet from the LAN-MAC and physical interface, said LAN transmission control protocol and internet protocol stack responsive to the outgoing-data packet having any of mangled data and a mangled header for requesting said remote host to send a replacement outgoing-data packet, said LAN transmission control protocol and internet protocol stack responsive to the outgoing-data packet having an internet protocol and not having any of mangled data and mangled header for correlating the outgoing-data packet to an incoming-data packet;

    a protocol converter coupled to said LAN transmission control protocol and internet protocol stack, responsive to the outgoing-data packet having a modem control command for decoding the modem control command, and responsive to the outgoing-data packet not having a modem control command for correlating the outgoing-data packet to a channel number and depacketizing the outgoing-data packet into outgoing-binary data;

    a connection controller and signal transform subsystem coupled to said protocol converter, responsive to the channel number for polling the outgoing-binary data and for transforming, without using an analog signal, the outgoing-binary data to a digitized representation of an analog signal having pulse code modulation (PCM); and

    a wire-line carrier interface, coupled to said connection controller and signal transform subsystem, responsive to the channel number, for multiplexing the digitized representation of the analog signal with frame bits, any alarm conditions and signalling bits as an outgoing-wire-line carrier signal and sending the outgoing-wire-line carrier signal over said wire-line carrier system.

View all claims
    ×
    ×

    Thank you for your feedback

    ×
    ×