Saul T Fishman

US Patent:

6496480, Dec 17, 2002

Filed:

Mar 17, 1999

Appl. No.:

09/271473

Inventors:

Gerald Richard Ash - West Long Branch NJ
Jiayu Chen - Morganville NJ
Saul Daniel Fishman - Edison NJ
Anurag S. Maunder - Scotch Plains NJ

Assignee:

ATT Corp. - New York NY

International Classification:

H04J 314

US Classification:

3702381, 370397, 370399

Abstract:

An originating switch ( ) in a packet-based telecommunications network ( ) routes calls to a terminating switch using the combination of Success-to-the Top (STT) and Class-of-Service criterion. In routing a call to the terminating switch, the originating switch checks for available bandwidth for the class of service of the call on the direct path ( ) between switches. If the path has available bandwidth, the originating switch routes on the direct path. Otherwise, the originating switch searches for the most recently successful one of a plurality the via switches ( ) linking the originating and terminating switches to determine whether that via switch can successfully route the call to the terminating switch. If the most recently successful one of the via switches possesses available bandwidth to route the call in accordance with its class of service, the originating switch selects that via switch to route the call. Otherwise, if the most-recently successful via switch can not route the call, the originating switch searches for a next successful via switch.

US Patent:

6590867, Jul 8, 2003

Filed:

May 27, 1999

Appl. No.:

09/321027

Inventors:

Gerald Richard Ash - West Long Branch NJ
Jiayu Chen - Morganville NJ
Saul Daniel Fishman - Edison NJ
Anurag S. Maunder - Scotch Plains NJ

Assignee:

ATT Corp. - New York NY

International Classification:

H04J 116

US Classification:

370236, 370252, 370389, 709240

Abstract:

The priority of the flow of packets representing calls or other connection requests within a packet network ( ) is determined from the Class-of-Service of the call. Upon receipt of a call, a recipient router ( ) identifies available paths, typically by exchanging messages with the other routers in the network. After selecting the path, the recipient router or centralized bandwidth broker determines whether the links comprising the selected path have available bandwidth for the class of service of the call. If so, the router routes the call to the next hop along the path. Otherwise, the router selects another path(s) and checks whether the links on the path possess sufficient bandwidth for the class of service of the call.

US Patent:

6778535, Aug 17, 2004

Filed:

Mar 29, 2000

Appl. No.:

09/538007

Inventors:

Gerald Richard Ash - West Long Branch NJ
Jiayu Chen - Morganville NJ
Saul Daniel Fishman - Edison NJ
Anurag S. Maunder - Scotch Plains NJ

Assignee:

ATT Corp. - New York NY

International Classification:

H04L 1228

US Classification:

37039521, 3702381, 3703952

Abstract:

The present invention concerns a technique for providing Class-of-Service Routing in an ATM network ( ) that utilizes the Private Network-Network Interface (PNNI) protocol. An originating node seeking to route a call to a terminating node does so by initially determining the class-of-service and then selecting a shortest length path there-between. Each successive link on the selected path is examined for sufficient available bandwidth and available depth (i. e. , bandwidth not reserved for other services) for the Class-of-Service of the call. If every link possesses sufficient available bandwidth, then the call passes on the selected path. Otherwise, should a link on the selected path lack sufficient bandwidth and available depth, then a crankback message is sent to the originating node, and the originating node selects the next shortest path. Thereafter, the process of examining each link for sufficient bandwidth is repeated. If no path is found, the call is ultimately blocked.

US Patent:

6842513, Jan 11, 2005

Filed:

Mar 16, 2001

Appl. No.:

09/809965

Inventors:

Frank J. Androski - Freehold NJ, US
Promod Kumar Bhagat - Morganville NJ, US
Saul Daniel Fishman - Highland Park NJ, US
Sekar Ganesan - Ocean NJ, US
Scott A. Sayers - Jackson NJ, US
Smita Pradip Sheth - Marlboro NJ, US

Assignee:

AT&T Corp. - New York NY

International Classification:

H04L 1266
H04M 700

US Classification:

37922001, 370352, 37922106, 379230

Abstract:

To facilitate routing changes, a telecommunications network () includes a centralized network routing database () queried by each ingress switch upon receipt of a call by a calling subscriber (). In response to the query, the network routing database returns to the querying switch the identity on the next (downstream) switch in the routing path. The querying switch then translates the switch identity to establish the link to that next switch. Because each querying switch makes the necessary translation of the next switch identity to make the link to the next switch, the centralized network database need not concern itself with the particular characteristics of the switch. To make global routing changes, only the network routing database need be updated, not each individual switch.

US Patent:

7561519, Jul 14, 2009

Filed:

Dec 23, 2003

Appl. No.:

10/744722

Inventors:

Gerald Richard Ash - West Long Branch NJ, US
Jiayu Chen - Morganville NJ, US
Saul Daniel Fishman - Edison NJ, US
Anurag S. Maunder - Scotch Plains NJ, US

Assignee:

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

International Classification:

H04J 1/16
H04J 3/14
H04L 1/00
H04L 12/26
H04L 12/28

US Classification:

370235, 3702301, 370231, 370238, 370351

Abstract:

The present invention concerns a technique for providing Class-of-Service Routing in an ATM network () that utilizes the Private Network-Network Interface (PNNI) protocol. An originating node seeking to route a call to a terminating node does so by initially determining the class-of-service and then selecting a shortest length path there-between. Each successive link on the selected path is examined for sufficient available bandwidth and available depth (i. e. , bandwidth not reserved for other services) for the Class-of-Service of the call. If every link possesses sufficient available bandwidth, then the call passes on the selected path. Otherwise, should a link on the selected path lack sufficient bandwidth and available depth, then a crankback message is sent to the originating node, and the originating node selects the next shortest path. Thereafter, the process of examining each link for sufficient bandwidth is repeated. If no path is found, the call is ultimately blocked.

US Patent:

7606905, Oct 20, 2009

Filed:

Sep 30, 2005

Appl. No.:

11/240073

Inventors:

Neela R. Atluri - Marlboro NJ, US
Frederick Murray Burg - West Long Branch NJ, US
Saul Daniel Fishman - Highland Park NJ, US
James A. Ibezim - Wayside NJ, US
Barbara Joanne Kittredge - Brunswick ME, US

Assignee:

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

International Classification:

G06F 15/173

US Classification:

709226, 709238, 709230, 709239, 709227, 709207, 370252, 370392, 370468, 370524, 370231

Abstract:

A method and apparatus for identifying and prioritizing applications and application servers in a Voice over IP network is disclosed. In a first embodiment, elements of signaling information are extracted from a call and are mapped to parameters associated with the call. These mapped parameters are then used by a service broker in a VoIP network to identify one or more application servers adapted to process the values of the respective parameter. The service broker may illustratively identify the application servers by a pointer to permit flexible reassignment of processing of a given parameter. The matched pointer/parameter combinations are then mapped to a precedence index. Then, according to this precedence index, the aforementioned pointers are mapped to specific addresses of application servers and the elements of signaling information are forwarded to those addresses for processing of applications.

US Patent:

7630372, Dec 8, 2009

Filed:

Dec 30, 2005

Appl. No.:

11/322925

Inventors:

Frank J. Androski - Freehold NJ, US
Saul Fishman - Highland Park NJ, US
James Ibezim - Wayside NJ, US
Barbara J. Kittredge - Brunswick ME, US
James J. Mansell - Fair Haven NJ, US

Assignee:

AT&T Corp. - New York NY

International Classification:

H04L 12/28

US Classification:

370392, 370349, 370352

Abstract:

A method and apparatus for providing routing of calls in a packet network, e. g. , a Voice over Internet Protocol (IP) network, using one or more criteria extracted from signaling information to determine the routing for the calls are disclosed. In one embodiment, the routing criteria extracted from signaling messages comprises at least one of: an access Uniform Resource Identifier, a destination phone number, a destination URI host, a calling party number, a calling party URI host, an incoming IP address, or a requested codec. An access URI and the egress URI are used to enhance routing decisions in a VoIP network. For instance, the egress URI can be used to specify egress route selections from the egress point of a VoIP network. The access URI can be used to influence the routing decisions within the VoIP network as well as the routing decisions with regard to egress routes from the egress point of the VoIP network.

US Patent:

7962648, Jun 14, 2011

Filed:

Aug 20, 2009

Appl. No.:

12/544540

Inventors:

Neela R. Alturi - Marlboro NJ, US
Frederick Murray Burg - West Long Branch NJ, US
Saul Daniel Fishman - Highland Park NJ, US
James A. Ibezim - Wayside NJ, US
Barbara Joanne Kittredge - Brunswick ME, US

Assignee:

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

International Classification:

G06F 15/173
H04L 12/66
G06F 17/00

US Classification:

709238, 709245, 709229, 709239, 709226, 709227, 370352, 370338, 370252, 370401, 370392, 455555, 455560, 455433, 455461, 705400, 705409, 705406, 705402

Abstract:

A method and apparatus for identifying and prioritizing applications and application servers in a Voice over IP network is disclosed. In a first embodiment, elements of signaling information are extracted from a call and are mapped to parameters associated with the call. These mapped parameters are then used by a service broker in a VoIP network to identify one or more application servers adapted to process the values of the respective parameter. The service broker may illustratively identify the application servers by a pointer to permit flexible reassignment of processing of a given parameter. The matched pointer/parameter combinations are then mapped to a precedence index. Then, according to this precedence index, the aforementioned pointers are mapped to specific addresses of application servers and the elements of signaling information are forwarded to those addresses for processing of applications.