At+t Corp.

At&t Intellectual Property I, L.p.

Lucent Technologies Inc.

Kamlesh T Tewani

Sylvia Halasz

Lance Wayne Wilson

Lev Slutsman

Mostafa Hashem Sherif

Frederick Murray Burg

Xiaowen Mang

Yonatan Aharon Levy

Mohan Gawande

Anthony Schiano

David Hilton Shur

Samir S Saad

David James Houck, Jr

Fred Burg

James Kwong Yee

Ali Mohammad Kujoory

David Tarjan

Anthony Schinao

A method and apparatus for resizing a trunk in a network are disclosed. For example, the method sets one or more target utilization levels for one or more trunks, and gathers trunk load data from one or more switches in the network in accordance with a pre-determined time period. The method evaluates the trunk load data in accordance with one or more trigger points for resizing the one or more trunks, wherein the one or more trigger points is based on the one or more target utilization levels. The method then resizes the one or more trunks if the one or more trigger points are reached or exceeded.

Method and apparatus for resizing a trunk in a network

A system and method for receiving a server request, determining whether one of a plurality of servers scheduled to receive the server request is available, wherein the availability of the one of the servers scheduled to receive the request is based on a first stored value and a second stored value, incrementing the second stored value by a predetermined amount when the one of the servers is unavailable and directing the server request to another one of the plurality of servers based on the first and second stored values.

System and method for load-balancing in server farms

A method of capacity planning in a network includes assigning a class of service to each packet of data on the network. Each class of service is also assigned a grade of service for different network conditions. A class bandwidth is calculated for each class of service under each network condition by multiplying an expected load for each class of service by the associated grade of service under each of the network conditions. A network condition bandwidth is calculated for each network condition by adding together the class bandwidths for all classes. A network capacity is predicted based upon the largest network condition bandwidth. A network management apparatus can perform the method.

Systems and methods for capacity planning using classified traffic

The present invention includes a method and apparatus for providing an e-help service over a network. The e-help service provides one or more action sequences, i.e., recommended courses of action, for specialized circumstances over a network, such as an Internet Protocol network. Subscribers subscribe to specific application areas, such as one or more application areas related to a subscriber's industry. The e-help service provider maintains information pertaining to application areas in one or more databases. When a user activates the e-help service, information corresponding to the present conditions of the user's circumstance is transmitted to the e-help service provider. The e-help service provider identifies one or more action sequences based upon a statistical analysis of the information received from the user and information stored in a database corresponding to the application area of the user. The action sequences having a high probability of success are transmitted to the user and provide one or more recommended courses of action.

Subscription-based priority interactive help services on the internet

A server on a packet network is protected from attack by flooding SYN messages that request a connection by comparing the number of SYN messages received within a preselected time interval N, where N is a number SYN messages within said preselected time that, with a predetermined probability, can be considered to be bona fide. When the number of received SYN messages within the preselected time interval is greater than N, corrective action is taken, such as discarding all SYN messages above the received N messages.

Protection against flooding of a server

The present invention provides a method, computer-readable medium and device for dynamically managing allocation of bandwidth in a packet network using a Dynamic Setting Scheme (DSS) for Class Based Queuing (CBQ). The method includes the steps of maintaining a minimized reserved portion of bandwidth to minimize delay jitter and maximizing a shared portion of bandwidth to maximize overall bandwidth utilization. Allocation of bandwidth may be based on a sharing tree hierarchical scheme that provides for temporary borrowing of bandwidth by real-time applications from bandwidth of non-real-time applications and blocks borrowing of bandwidth by non-real-time applications from bandwidth of real-time applications. DSS typically provides for using measurable parameters, such as queue length and number of borrowing attempts per a predetermined length of time/observation window, as control triggers for implementing adjustment of bandwidth allocation. In one embodiment, the steps include measuring a predetermined parameter at predetermined observation window times and dynamically adjusting allocated bandwidth for parent classes of real-time traffic by adjusting an average of the predetermined parameter to have a value within a predetermined stable region.

Method and device for efficient bandwidth management

The system and method of the present invention completes at least two calls originating from terminal equipment located at a premises and connected by a point-of-attachment having a single phone number to a public switched telephone network where a dial tone is provided to the premises. Multiple calls are now allowed with an analog interface to the public switched telephone network. At least two calls and control channel are combined into a modulated analog signal having a separate channel for each call and transmitted through a modulation/demodulation device as a modulated analog signal to the public switched telephone network. The modulated analog signal is split into respective calls and control channel. Each call is forwarded to a respective remote device based on the identity information and auxiliary information received through the control channel.

System and method for completing two calls using analog interface to telephone network

The system and method of the present invention attempts completion of one call, while at least one call is in progress, between terminal equipment and a telecommunications network where the terminal equipment is connected by a point-of-attachment having a single phone number to a public switched telephone network where a dial tone is provided to the premises. Multiple calls are now allowed with an analog interface to the public switched telephone network. At least one call and control channel are combined into a modulated analog signal having a separate channel for each call and transmitted through a modulation/demodulation device as a modulated analog signal to the public switched telephone network. The modulated analog signal is split into respective calls and control channel. Each call is forwarded to a respective remote device based on the identity information and auxiliary information received through the control channel.

System and method for completing a call while at least one call is established using analog interface to telephone network

A method is provided which reduces post-dial delay in a number portability environment. In particular, a switching office which controls call routing to portable numbers (NPA-NXXs) contains a cache for which location routing number response information may be stored. The processing office concurrently checks the cache for LRN response information corresponding to the dialed number and launches a query to a number portability database. Thus, if the LRN response information in the cache is valid then the call will be routed in the timeliest manner. However, if either the cache does not have any LRN response information or the LRN response information in the cache proves not to be valid then, the switching office will have received the LRN response information from the database more quickly based on the concurrent launching of a query. Therefore, a more timely attempt at establishing a proper connection to the dialed number will occur thereby reducing post-dial delay.

Method of enhancing call processing in a number portability environment

An integrated sub-rate multiplexing system and method optimizes use of transmission bandwidth in integrated networks. For example, transmission capacity of the Public Switched Telephone Network (PSTN) is assigned to various traffic types according to the instantaneous needs, illustratively in an enhanced (T , T )-environment. When speech and data packets compete for bandwidth, under certain conditions portions of data are concatenated to the voice segment, increasing bandwidth efficiency.

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Freehold, NJ, United States of America

Kamlesh T Tewani