Abstract: A method of transmitting signals between a source modem and a destination modem. The method includes transmitting the signals from the source modem, over a first switched network path, to a first interface, encapsulating the at least some of the signals received by the first interface into packets, transmitting the packets from the first interface over a packet-based network to a second interface, removing the encapsulation of the signals at the second interface; and transmitting the data signals from the second interface over a second switched network path to the destination modem.

Abstract: A method of establishing a fax connection on a link which is a portion of a composite connection. The method includes transmitting at least some signals of a negotiation procedure on the link and initiating a retrain on the connection, without identifying a problem on the connection of the link, the retrain being initiated after transmitting the at least some signals of the negotiation procedure but before transmitting data on the data channel of the link due to the negotiation procedure.

Abstract: A repeater having first and second communication terminals that receives signals at either of the terminals and transmits signals responsive to the received signals at the other of the terminals, comprising: a first signal processor that receives V.90 analogue data signals from the first terminal and generates bit streams responsive thereto that accurately reproduce the data in the analogue signals; a second signal processor; and a communication channel linking the first and second signal processors wherein the second signal processor receives the bit streams generated by the first signal processor via the communication channel and transmits V.90 PCM octets responsive thereto via the second terminal.