Patent ID: 7075979
Filing Date: 2006-07-11
Classification: H04L

Abstract:
1. A modem relay method for use by a first gateway device, said modem relay method comprising: receiving a call from a local modem for establishing a communication with a remote modem; requesting a second gateway device to place a call to said remote modem for establishing said communication; transmitting an amplitude modulated answer tone (ANSam) to said local modem for a predetermined period of time; monitoring for detection of a call menu (CM) signal from said local modem; monitoring for detection of an AA signal from said local modem; monitoring for detection of an energy from said local modem, wherein said energy is not related to said CM signal or said AA signal; detecting said energy; transmitting a modem pass through message to said second gateway device; and configuring said first gateway device to modem pass through mode.