Abstract: A modem to modem communication system supports call waiting services by exchanging hold request and acknowledge signals before relinquishing the line servicing incoming calls. Thereafter, the modem to modem session is reestablished without having to redial. The hold request may be denied or accepted, and may define the duration a modem will hold before hanging up. The holding modem maintains the session by fooling the higher protocol layers, making them believe that the modem is not on hold. Three-way calling services are also used to free up the shared line for outgoing calls while maintaining the session with holding modems. A table may be employed to screen incoming calls through a comparison of the caller ID information with that in the table. The table may be within the modem or the host computer.

Abstract: The present invention is directed to a method and system for operating a secondary diagnostic channel on a modem. The present invention is directed to the transmission of data on a previously defined UI frame. In this manner, various pieces of information may be sent over the secondary logic channel. The present application also discloses the use of a wild card request that allows the sending of multiple pieces of unrelated data at one time, through the use of a special format. The present application also discloses the use pseudo-unique call identification information that can be used to diagnose and prevent problems in various data connections. Modems can be configured to refer to information stored for previous connections to diagnose problems that may have occurred in the previous connection.

Abstract: In a modem system connecting two modems over the telephone lines, a method is disclosed that transmits identification data regarding the two modems. Furthermore, the connection between the two modems may be optimized based upon information regarding the compatibility of the two modems. In addition, a secondary logic channel, which may remain open throughout the duration of the connection may also be used to transmit data about the modems. The secondary logic channel would only transmit data if the primary data channel is not being fully used. The secondary logic channel may be used to transmit various diagnostic information between the modems.

Abstract: A modem to modem communication system supports call waiting services by exchanging hold request and acknowledge signals before relinquishing the line servicing incoming calls. Thereafter, the modem to modem session is reestablished without having to redial. The hold request may be denied or accepted, and may define the duration a modem will hold before hanging up. The holding modem maintains the session by fooling the higher protocol layers, making them believe that the modem is not on hold. Three-way calling services are also used to free up the shared line for outgoing calls while maintaining the session with holding modems. A table may be employed to screen incoming calls through a comparison of the caller ID information with that in the table. The table may be within the modem or the host computer.

Abstract: A modem to modem communication system supports call waiting services by exchanging hold request and acknowledge signals before relinquishing the line servicing incoming calls. Thereafter, the modem to modem session is reestablished without having to redial. The hold request may be denied or accepted, and may define the duration a modem will hold before hanging up. The holding modem maintains the session by fooling the higher protocol layers, making them believe that the modem is not on hold. Three-way calling services are also used to free up the shared line for outgoing calls while maintaining the session with holding modems. A table may be employed to screen incoming calls through a comparison of the caller ID information with that in the table. The table may be within the modem or the host computer.

Abstract: The present invention is directed to a method and system for operating a secondary diagnostic channel on a modem. The present invention is directed to the transmission of data on a previously defined UI frame. In this manner, various pieces of information may be sent over the secondary logic channel. The present application also discloses the use of a wild card request that allows the sending of multiple pieces of unrelated data at one time, through the use of a special format. The present application also discloses the use pseudo-unique call identification information that can be used to diagnose and prevent problems in various data connections. Modems can be configured to refer to information stored for previous connections to diagnose problems that may have occurred in the previous connection.