Patent ID: 6404807
Filing Date: 2002-06-11
Classification: H04L,H04M

Abstract:
A method for connecting a first and a second analog modems at a first and a second end point respectively, through a digital backbone wherein said first and second end points include analog connection lines, and wherein said first and second analog modems utilize PCM (pulse code modulation) in both directions, comprising:connecting said first analog modem coupled to a first analog connection line to said first end point, through a first digital modem coupled to a first digital connection line which communicates with said first analog connection line; negotiating a first data transmission/receiving rate between said first analog modem and said first digital modem; connecting a second analog modem coupled to a second analog connection line to said second end point, through a second digital modem coupled to a second digital connection line which communicates with said second analog connection line; negotiating a second data transmission/receiving rate between said second analog modem and said second digital modem; determining an appropriate data transmission/receiving rate based on said first and second negotiated data transmission/receiving rates; and based on said determined appropriate data transmission/receiving rate, re-negotiating said data transmission/receiving rate between said first analog modem and said first digital modem, and said data transmission/receiving rate between said second analog modem and said second digital modem.