Patent ID: 6912276
Filing Date: 2005-06-28
Classification: H04L,H04M

Abstract:
1. A first modem for communication with a second modem over a communication channel, said first modem being in communication with a handset, said first modem comprising: an off-hook detector capable of detecting said handset going off-hook, while said first modem is in communication with said second modem, and further being capable of generating an attention signal in response thereto; and a transmitter capable of transmitting a hold request to said second modem in response to said attention signal; wherein said handset is placed off-hook by a user for dialing an outgoing call, and wherein said communication between said modems over said communication channel ceases for a period of time after transmitting said hold request, and wherein said first modem keeps an upper layer protocol alive during said period of time by manufacturing data and presenting said data to an upper layer to maintain an appearance of receiving said data from said second modem.