Patent ID: 6819749
Filing Date: 2004-11-16
Classification: H04L,H04M

Abstract:
A training method for use by a first modem to reduce a training time for training said first modem with a second modem, said training time including a capabilities exchange phase time, a probing phase time, an impairment learning phase time and a constellation phase time, where said first modem is capable of training with said second modem over a communication channel in accordance with the V.90 modem protocol including the V.8bis capabilities exchange phase, said training method comprising the steps of:receiving a call from said second modem to establish said communication channel; initiating, in response to said call, a modified V.8bis capabilities exchange phase of the V.90 modem protocol, wherein said modified V.8bis capabilities exchange phase of the V.90 modem protocol is indicative of a fast connect capability; receiving a fast connect capability acknowledgement from said second modem in response to said fast connect capability; skipping at least a portion of the V.8bis capabilities exchange phase of the V.90 modem protocol to reduce said capabilities exchange phase time, said skipping step being performed in response to said receiving said fast connect capability acknowledgement; determining whether a characteristic of said communication channel is similar to a corresponding characteristic associated with a previously established communication channels; and using one or more stored parameters to reduce said training time for establishing said communication channel, wherein said one or more stored parameters are associated with one or more previously established communication channels.