Patent ID: 7957369
Filing Date: 2011-06-07
Classification: H04L

Abstract:
1. A method for use by a first gateway having a first gateway modem to establish data communication between a first modem and a second modem over a packet network, said method comprising: receiving a call from said first modem over a first telephone line; negotiating, in response to said call, over said first telephone line with said first modem to establish a first physical link connection; informing a second gateway of said call over said packet network, said second gateway having a second gateway modem; establishing a gateway-to-gateway transport link with said second gateway over said packet network; determining a first set of data link parameters supported by said first modem and said first gateway modem; requesting said first modem to enter a wait state after said determining of said first set of data link parameters; negotiating by said first gateway with said second gateway, on behalf of said first modem and said second modem, respectively, to determine a final set of parameters supported by both said first modem and said second modem based on said first set of data link parameters and a second set of data link parameters, wherein said second set of data link parameters are supported by both said second modem and said second gateway modem; sending, after determining said final set of parameters, a ready to resume message to said first modem by said first gateway modem indicating that said first gateway modem is ready to resume from said wait state; establishing, after said sending of said ready to resume message, a first data link between said first gateway modem and said first modem over said first physical link connection using said final set of data link parameters; configuring said first gateway modem for passively transporting first data link information received from said first modem over said first data link to said second gateway over said packet network, wherein said first data link includes a modem error correction, and wherein said passively transporting of said first data link information is a transportation performed without applying said modem error correction to said first data link information by said first gateway modem and said second gateway modem.