Christopher D Haun, 463809 Deep Valley Trl, Plano, TX 75023

6757732, Jun 29, 2004

Mar 16, 2000

09/527097

Patrick N. Sollee - Richardson TX
Christopher Haun - Richardson TX

Nortel Networks Limited - St. Laurent

G06F 1516

709227, 709204, 709228, 709230, 455412, 455466, 455413, 455557, 379 52, 379114, 375222, 704201

A communications system ( ) includes a packet-based data network ( ) that is coupled to various network elements ( , and ) that are capable of participating in audio-based call sessions over the data network ( ). The audio-based call sessions may be defined according to a Session Initiation Protocol (SIP) or to another type of protocol (e. g. , H. 323). The network elements ( , and ) are also capable of participating in text-based chat sessions. Text messages exchanged in such text-based chat sessions are earned in messages that are defined according to the protocol for audio-based call sessions. In one example, such messages may be SIP Info messages. The SIP Info messages carrying the text messages may be communicated either during an established audio-based call session or outside of an audio-based call session. Using SIP (or another signal protocol) messages to carry the text messages allows such messages to be conveniently transported through a firewall system.

6771641, Aug 3, 2004

Dec 10, 1999

09/459044

Patrick Sollee - Richardson TX
Tahsin Choudhuri - Plano TX
Christopher Haun - Richardson TX
Scott L. Orton - Allen TX
Stephen Whynot - Dallas TX

Nortel Networks Limited - St. Laurent

H04L 1266

370356, 370389, 370525, 370526, 379 8817, 379418

A system and method is provided for collecting and transporting DTMF digits between two network end points in a packet network in order to preserve the integrity of the DTMF digits. The system and method use a Session Initiation Protocol (SIP), which is currently defined by the standard body of Internet Engineering Task Force. SIP applications utilize certain predetermined messages, such as an INFO message, and templates. DTMF digits can be collected and transported by using the SIP INFO messages. This works especially well for telephony applications which may require mid session signaling.

6993595, Jan 31, 2006

Dec 28, 2001

10/034261

Gregory Luptowski - Richardson TX, US
Patrick Sollee - Richardson TX, US
Anita Wadhwani - Dallas TX, US
Christopher Haun - Richardson TX, US
Deepashree Rugi - Richardson TX, US

Nortel Networks Limited - St. Laurent

G06F 15/16
G06F 15/173
H04L 12/28

709245, 709227, 709238, 370392

The present invention allows a client on a private network to determine changes in a public address, which is provided by an address translation device and used for communications on a public network. The client will receive messages over the private network from the public network via the address translation device. In the message, a copy of the public address is placed in a portion of the message. When the address translation device modifies the message such that the client's private address is used for delivery of the message to the client, the copy of the public address remains in the message. Upon receipt, the client will analyze the message to identify the public address and compare the public address with a previously known public address. If the public address provided in the message is different from the stored public address, the client can recognize that it has changed.

2003009, May 15, 2003

Nov 14, 2001

09/992217

Christopher Haun - Richardson TX, US
Tahsin Choudhuri - Plano TX, US
Patrick Sollee - Richardson TX, US

H04M001/64
H04M001/00

379/080000, 379/388060

A telephony data switching method includes receiving data from a first party and determining whether the data from the first party is substantially all speech data. If the data from the first party is ‘substantially all’ speech data, sending the data from the first party to the speaker and deactivating a data transfer state by preventing transfer of the data captured by a microphone operable to receive data from a second party and to receive data output by a speaker. If the data from the first party is not substantially all speech data, determining whether a silent data threshold has been reached. If the silent data threshold has been reached, the method also includes activating the data transfer state and recording data from the second party. If the data transfer state has been activated, the method includes sending the data from the second party to the first party.

2014016, Jun 12, 2014

Dec 7, 2012

13/707691

- Basking Ridge NJ, US
Tate Reimer - Wylie TX, US
Christopher Haun - Richardson TX, US

Avaya Inc. - Basking Ridge NJ

H04L 12/18

370261

System and method to enable selective suppression of an audible indication in a SIP-based call, the method including: receiving, by a SIP conferencing server, a message from a caller to initiate a SIP-based call, wherein the message comprises a header section; searching the header section for a predetermined header; if the predetermined header is found, determining a field and a corresponding field value from the predetermined header; and storing the field value in a memory, wherein the stored field value is specific to the field and to the caller.