Abstract: Methods, systems, and computer program products for clustering and communicating between Internet protocol multimedia subsystem (IMS) entities and for supporting database access in an IMS network environment. According to one aspect, an IMS cluster node includes a serving call state control function (S-CSCF) for controlling media sessions between IMS users. The cluster node further includes a home subscriber service (HSS) function for storing and providing IMS subscription information to the S-CSCF function. A shared memory is operatively associated with the S-CSCF function and the HSS function. The S-CSCF function obtains IMS subscription information from the HSS function via the shared memory.

Abstract: Methods, systems, and computer program products for clustering and communicating between Internet protocol multimedia subsystem (IMS) entities and for supporting database access in an IMS network environment. According to one aspect, an IMS cluster node includes a serving call state control function (S-CSCF) for controlling media sessions between IMS users. The cluster node further includes a home subscriber service (HSS) function for storing and providing IMS subscription information to the S-CSCF function. A shared memory is operatively associated with the S-CSCF function and the HSS function. The S-CSCF function obtains IMS subscription information from the HSS function via the shared memory.

Abstract: Methods, systems, and computer program products for clustering and communicating between Internet protocol multimedia subsystem (IMS) entities and for supporting database access in an IMS network environment. According to one aspect, an IMS cluster node includes a serving call state control function (S-CSCF) for controlling media sessions between IMS users. The cluster node further includes a home subscriber service (HSS) function for storing and providing IMS subscription information to the S-CSCF function. A shared memory is operatively associated with the S-CSCF function and the HSS function. The S-CSCF function obtains IMS subscription information from the HSS function via the shared memory.

Abstract: Methods, systems, and computer program products for synchronizing a subscriber profile in a plurality of domains is described. In one embodiment, the method includes receiving a profile update request message from an application server to modify an Internet protocol (IP) domain subscriber profile. The profile update request message is forwarded to a home location register (HLR). A cellular domain subscriber profile is modified in accordance with the profile update request message. Similarly, an updated subscriber profile data is received from the HLR. The updated subscriber profile data is converted in the IP domain. The converted updated subscriber profile data is sent to the application server.

Abstract: Methods, systems, and computer program products for clustering and communicating between Internet protocol multimedia subsystem (IMS) entities and for supporting database access in an IMS network environment. According to one aspect, an IMS cluster node includes a serving call state control function (S-CSCF) for controlling media sessions between IMS users. The cluster node further includes a home subscriber service (HSS) function for storing and providing IMS subscription information to the S-CSCF function. A shared memory is operatively associated with the S-CSCF function and the HSS function. The S-CSCF function obtains IMS subscription information from the HSS function via the shared memory.

Abstract: Methods, systems, and computer program products for clustering and communicating between Internet protocol multimedia subsystem (IMS) entities are disclosed. According to one aspect, an IMS cluster node includes a serving call state control function (S-CSCF) for controlling media sessions between IMS users. The cluster node further includes a home subscriber service (HSS) function for storing and providing IMS subscription information to the S-CSCF function. A shared memory is operatively associated with the S-CSCF function and the HSS function. The S-CSCF function obtains IMS subscription information from the HSS function via the shared memory.

Abstract: A method for providing presence gateway functionality includes deriving presence information for subscribers in a first set of subscribers based on telecommunications signaling messages. The first set of subscribers includes at least one subscriber who is not a subscribed-to presentity. The method also includes determining whether presence status information for a subscriber in the first set of subscribers has changed. In response to detecting a change in presence status, it is determined whether the subscriber is a subscribed-to presentity. If the subscriber is a subscribed-to presentity, a presence server is notified of the change in status of the subscriber.

Abstract: Methods, systems, and computer program products for supporting database access in an Internet protocol (IP) multimedia subsystem (IMS) network environment are disclosed. At least one call state control function (CSCF) entity generates subscriber-related queries according to an abstracted profile (AP) protocol. At an abstracted profile server (APS), a CSCF-generated, subscriber-related query is received, subscriber information is gathered related to the CSCF-generated, subscriber-related query from at least one subscriber information database using a native protocol of the subscriber information database, a reply message for the CSCF-generated, subscriber-related query is generated based on the gathered subscriber information and the reply message is forwarded to a respective CSCF that generated the CSCF-generated subscriber-related query, the reply message being forwarded according to the AP protocol.

Abstract: Methods, systems, and computer program products for using an E.164 number (ENUM) database for message service message routing resolution among 2G and subsequent generation network systems are disclosed. According to one method, a message including message service message content is received. The message may include a 2G message recipient identifier. An ENUM database may be queried. A response from the ENUM database is received. Based on the response, unavailability of a subsequent generation network address for the recipient is determined. In response to the unavailability, the message service message content is attempted to be delivered to the recipient via a 2G network.

Abstract: Methods, systems, and computer program products for synchronizing a subscriber profile in a plurality of domains is described. In one embodiment, the method includes receiving a profile update request message from an application server to modify an Internet protocol (IP) domain subscriber profile. The profile update request message is forwarded to a home location register (HLR). A cellular domain subscriber profile is modified in accordance with the profile update request message. Similarly, an updated subscriber profile data is received from the HLR. The updated subscriber profile data is converted in the IP domain. The converted updated subscriber profile data is sent to the application server.

Abstract: Methods, systems, and computer program products for using an E.164 number (ENUM) database for message service message routing resolution among 2G and subsequent generation network systems are disclosed. According to one method, a message including message service message content is received. The message may include a 2G message recipient identifier. An ENUM database may be queried. A response from the ENUM database is received. Based on the response, unavailability of a subsequent generation network address for the recipient is determined. In response to the unavailability, the message service message content is attempted to be delivered to the recipient via a 2G network.

Abstract: Methods and systems for defining and distributing network data collection rule sets and for filtering messages using the rule sets are disclosed. Message-based filter criteria are automatically deduced from CDR-based filter criteria and downloaded to site collectors. The site collectors implement rule changes on-the-fly using a table-driven system. The message-based rule sets downloaded to the site collectors are supersets of the messages required by multiple different network monitoring applications. As a result, non-redundant, multi-application data streams are sent across the service provider's internal network, resulting in efficient bandwidth utilization.

Abstract: Methods and system for delivering presence information regarding push-to-talk subscribers are disclosed. In one method, a short message gateway receives presence information from a first push-to-talk subscriber from a presence or push-to-talk server. The short message gateway determines the location and availability of a second push-to-talk subscriber to which the presence information is directed. If the second push-to-talk subscriber is available, the SMS gateway delivers the presence information to the second push-to-talk subscriber in a manner that bypasses the SMSC. If the SMS gateway determines that the second push-to-talk subscriber is not available, the SMS gateway discards the presence information.

Abstract: Methods, systems, and computer program products for supporting database access in an Internet protocol (IP) multimedia subsystem (IMS) network environment are disclosed. At least one call state control function (CSCF) entity generates subscriber-related queries according to an abstracted profile (AP) protocol. At an abstracted profile server (APS), a CSCF-generated, subscriber-related query is received, subscriber information is gathered related to the CSCF-generated, subscriber-related query from at least one subscriber information database using a native protocol of the subscriber information database, a reply message for the CSCF-generated, subscriber-related query is generated based on the gathered subscriber information and the reply message is forwarded to a respective CSCF that generated the CSCF-generated subscriber-related query, the reply message being forwarded according to the AP protocol.

Abstract: Methods, systems, and computer program products for clustering and communicating between Internet protocol multimedia subsystem (IMS) entities are disclosed. According to one aspect, an IMS cluster node includes a serving call state control function (S-CSCF) for controlling media sessions between IMS users. The cluster node further includes a home subscriber service (HSS) function for storing and providing IMS subscription information to the S-CSCF function. A shared memory is operatively associated with the S-CSCF function and the HSS function. The S-CSCF function obtains IMS subscription information from the HSS function via the shared memory.

Abstract: A method for providing presence gateway functionality includes deriving presence information for subscribers in a first set of subscribers based on telecommunications signaling messages. The first set of subscribers includes at least one subscriber who is not a subscribed-to presentity. The method also includes determining whether presence status information for a subscriber in the first set of subscribers has changed. In response to detecting a change in presence status, it is determined whether the subscriber is a subscribed-to presentity. If the subscriber is a subscribed-to presentity, a presence server is notified of the change in status of the subscriber.

Abstract: Methods and system for delivering presence information regarding push-to-talk subscribers are disclosed. In one method, a short message gateway receives presence information from a first push-to-talk subscriber from a presence or push-to-talk server. The short message gateway determines the location and availability of a second push-to-talk subscriber to which the presence information is directed. If the second push-to-talk subscriber is available, the SMS gateway delivers the presence information to the second push-to-talk subscriber in a manner that bypasses the SMSC. If the SMS gateway determines that the second push-to-talk subscriber is not available, the SMS gateway discards the presence information.

Abstract: Methods and systems for defining and distributing network data collection rule sets and for filtering messages using the rule sets are disclosed. Message-based filter criteria are automatically deduced from CDR-based filter criteria and downloaded to site collectors. The site collectors implement rule changes on-the-fly using a table-driven system. The message-based rule sets downloaded to the site collectors are supersets of the messages required by multiple different network monitoring applications. As a result, non-redundant, multi-application data streams are sent across the service provider's internal network, resulting in efficient bandwidth utilization.