Robert P Dailey

US Patent:

7639792, Dec 29, 2009

Filed:

Nov 23, 2005

Appl. No.:

11/286495

Inventors:

Chaoxin Qiu - Austin TX, US
Richard L. Khan - San Ramon CA, US
Robert F. Dailey - Austin TX, US
Keith Joseph Allen - Austin TX, US
Geoffrey R. Zampiello - Norwalk CT, US

Assignee:

ATT Knowledge Ventures, L.P. - Reno NV

International Classification:

H04M 11/04
H04M 3/42

US Classification:

37920715, 379 37, 379 45, 379 51, 37921001

Abstract:

In a particular embodiment a system and method for processing a call in a Voice over internet protocol (VoIP) network are disclosed. The method includes receiving the call associated with a private identifier (PRID) at a server, classifying a call location based on the PRID and sending the call from the server to a Public Safety Answering Point (PSAP) with a call back number associated with the PRID. The system includes a first server interface for receiving a message containing a PRID associated with the call, a second server interface to access the data base for searching for the PRID in the data structure; a third server interface to receive an output from the database indicating whether a PRID has been found in the data structure; and a fourth server interface to send the call to a PSAP.

US Patent:

7814193, Oct 12, 2010

Filed:

May 6, 2008

Appl. No.:

12/116036

Inventors:

Chaoxin Qiu - Austin TX, US
Robert F. Dailey - Austin TX, US
Satish Parolkar - Austin TX, US

Assignee:

AT&T Intellectual Property I, L.P. - Reno NV

International Classification:

G06F 15/173

US Classification:

709223, 709244, 709241, 709225, 709224, 709235, 709238, 709239, 709203, 709240, 370401, 370352, 370238, 370400, 370351, 370354

Abstract:

Disclosed methods of achieving load balancing among a plurality of border elements in a next generation networks (NGN) communication network include a method for processing and user endpoint originated messages (UEOM), such as a register or invite message, generated by a user endpoint. A work load information data structure indicative of a first border element's work load and a second border element's work load is maintained when the border elements exchange work load information. Based on the work load information, a first border element responds to a UEOM by either (1) accepting the UEOM for first border element processing, (2) determining whether to accept the UEOM for first border element processing or redirect the UEOM to a second border element for second border element processing, or (3) rejecting the UEOM.

US Patent:

7843809, Nov 30, 2010

Filed:

Nov 14, 2008

Appl. No.:

12/271251

Inventors:

Chaoxin Qiu - Austin TX, US
Robert Dailey - Austin TX, US
Arshad Khan - Austin TX, US
Jeffrey Scruggs - Round Rock TX, US

Assignee:

AT&T Intellectual Property I, L.P. - Reno NV

International Classification:

G01R 31/08
G06F 11/00
G08C 15/00
H04J 1/16

US Classification:

370216

Abstract:

According to one method for preserving stable calls during failover, during a dialog between two user endpoints, a determination is made whether a standby call processor has become operational, such as when a corresponding primary call processor is in fault. Responsive to determining that the standby call processor has become operational, a signaling protocol message is received from a requester. A determination is made whether the message includes an in-dialog signaling protocol request. Responsive to determining that the message includes the in-dialog request, a determination is made whether a call state associated with the dialog is found in memory. Responsive to determining that the call state associated with the dialog is not found in memory, a non-call terminating error response is made responding to the in-dialog request. The non-call terminating error response may cause the requester to terminate the in-dialog request but not terminate the dialog.

US Patent:

7936683, May 3, 2011

Filed:

Jun 20, 2007

Appl. No.:

11/765607

Inventors:

Chaoxin Qiu - Austin TX, US
Jeffrey Scruggs - Round Rock TX, US
Robert Dailey - Austin TX, US

Assignee:

AT&T Intellectual Property I, L.P. - Atlanta GA

International Classification:

H04L 12/26

US Classification:

370242, 370241, 714704, 714706

Abstract:

A method of monitoring network performance is disclosed and includes receiving a session initiation protocol (SIP) response message from one of a plurality of serving-call session control function (S-CSCF) systems at a centralized error monitoring server of an Internet Protocol (IP) Multimedia Subsystem (IMS). The SIP response message includes at least one error code that matches an error monitoring initial filter criterion included in a subscriber profile. The method also includes sending an alert message to a fault management system of the IMS when at least one threshold related to SIP error codes is met or exceeded based on the at least one error code.

US Patent:

7991139, Aug 2, 2011

Filed:

Feb 13, 2006

Appl. No.:

11/352796

Inventors:

Chaoxin Charles Qiu - Austin TX, US
Robert Francis Dailey - Austin TX, US

Assignee:

AT&T Intellectual Property I, L.P. - Atlanta GA

International Classification:

H04M 3/42

US Classification:

37921104, 37920501, 37920716, 37921103, 379179, 379252, 370352, 370356

Abstract:

Methods and apparatus to limit ring trees in voice over Internet protocol (VoIP) networks are disclosed. A disclosed example parallel ring policy enforcer comprises a memory to hold parallel ring tree information and a policy checker to enforce a parallel ring policy based on a parallel ring request and the parallel ring tree information.

US Patent:

8041823, Oct 18, 2011

Filed:

Dec 23, 2008

Appl. No.:

12/342514

Inventors:

Chaoxin Qiu - Austin TX, US
Arshad Khan - Austin TX, US
Jeffrey L. Scruggs - Round Rock TX, US
Robert F. Dailey - Austin TX, US

Assignee:

AT & T Intellectual Property I, L.P. - Atlanta GA

International Classification:

G06F 15/16

US Classification:

709227, 709217, 709224

Abstract:

Disclosed are techniques for optimization of media flows within a provider network. The provider network comprises a plurality of sites, each site having one or more media servers capable of supporting a media session with a user endpoint device. The provider network further includes a media server director (MSD) that receives registration information identifying one or more user endpoint devices that have registered with a particular site. Using this registration information, as well as predetermined preference policies, the MSD prepares a preference order for the media servers of the provider network for user endpoint devices associated with the site. When an application server signals an intent to establish a media session with a user endpoint device of the site, the MSD selects a media server based on the preference order and provides an indicator of the selected media server. The application server can then contact the selected media server identified by the indicator to establish and support a media session with the user endpoint device.

US Patent:

8050395, Nov 1, 2011

Filed:

Jun 12, 2006

Appl. No.:

11/451202

Inventors:

Mehrad Yasrebi - Austin TX, US
Haifeng Bi - San Antonio TX, US
Saji Varughese - Austin TX, US
Satish Jaganath Parolkar - Austin TX, US
Robert F. Dailey - Austin TX, US

Assignee:

AT&T Intellectual Property I, L.P. - Atlanta GA

International Classification:

H04M 7/00
H04M 11/04
H04M 1/00
H04M 3/00

US Classification:

37922103, 379 37, 37935503, 37935509, 3793551, 37935703

Abstract:

An analog telephone adapter (ATA) comprises a dial tone generator, control logic and a packet generator. The dial tone generator generates a dial tone when the ATA is in an unregistered state. The control logic processes a dial-out request when the ATA is in the unregistered state. The control logic directs the packet generator to generate an invite packet for an emergency proxy to handle the dial-out request on behalf of the ATA when the ATA is in the unregistered state.

US Patent:

8156219, Apr 10, 2012

Filed:

Aug 3, 2007

Appl. No.:

11/833661

Inventors:

Chaoxin Qiu - Austin TX, US
Jeffrey Scruggs - Round Rock TX, US
Robert Dailey - Austin TX, US

Assignee:

AT&T Intellectual Property I, L.P. - Atlanta GA

International Classification:

G06F 15/173

US Classification:

709224, 714 4, 714 31

Abstract:

A method of monitoring a network is disclosed and includes receiving an enrollment message at a heartbeat manager from a heartbeat agent associated with a first application stored at a first network entity. The method also includes automatically associating a heartbeat interval with the first application based at least partially on the enrollment message. In another embodiment, a system of monitoring a network is disclosed and includes a network entity having processing logic and memory accessible to the processing logic. The memory stores an application including a heartbeat agent portion having instructions executable by the processing logic to enroll with a heartbeat management server communicating with the network entity and including a heartbeat monitor including instructions to subscribe to notifications indicating an operational status of an application residing at a second network entity.