Abstract: The present disclosure provides a system and method for applying authentication and security policies in a SIP environment. In accordance with one embodiment, there is provided a method for use on a SIP server, comprising: establishing a persistent connection with a user agent (UA); initiating an idle connection timeout countdown timer; performing authentication of an initial REGISTER request using a first level of authentication; and terminating the persistent connection when the initial REGISTER request is not validated before expiry of the idle connection timeout countdown timer.

Abstract: The present disclosure provides a system and method for Session Initiation Protocol (SIP) user agent identification and efficient binding. In accordance with one example embodiment, there is provided a method for use on a Session Initiation Protocol (SIP) registration server for registering user agents, comprising: receiving a REGISTER message which includes a binding key; determining whether a prior binding associated with the binding key exists in a registration repository; and creating a new binding associated with the binding key and adding the new binding to the registration repository when no prior binding associated with the binding key exists in the registration repository.

Abstract: An apparatus, and an associated method, for a communication device having a SIM card, or other removable storage element, that permits hot-swapping of the storage element. Notification of hot-swapping of the removable storage element is detected. Responsive to the detection, provision is made to resubscribe to push service notifications that are disabled upon removal of the removable storage element.

Abstract: The present disclosure provides a system and method for Session Initiation Protocol (SIP) user agent identification and efficient binding. In accordance with one example embodiment, there is provided a method for use on a Session Initiation Protocol (SIP) registration server for registering user agents, comprising: receiving a REGISTER message which includes a binding key; determining whether a prior binding associated with the binding key exists in a registration repository; and creating a new binding associated with the binding key and adding the new binding to the registration repository when no prior binding associated with the binding key exists in the registration repository.

Abstract: The present disclosure provides a system and method for applying authentication and security policies in a SIP environment. In accordance with one embodiment, there is provided a method for use on a SIP server, comprising: establishing a persistent connection with a user agent (UA); initiating an idle connection timeout countdown timer; performing authentication of an initial REGISTER request using a first level of authentication; and terminating the persistent connection when the initial REGISTER request is not validated before expiry of the idle connection timeout countdown timer.

Abstract: The present disclosure provides a system and method for Session Initiation Protocol (SIP) user agent identification and efficient binding. In accordance with one example embodiment, there is provided a method for use on a Session Initiation Protocol (SIP) registration server for registering user agents, comprising: receiving a REGISTER message which includes a binding key; determining whether a prior binding associated with the binding key exists in a registration repository; and creating a new binding associated with the binding key and adding the new binding to the registration repository when no prior binding associated with the binding key exists in the registration repository.

Abstract: The present disclosure provides a system and method for applying authentication and security policies in a SIP environment. In accordance with one embodiment, there is provided a method for use on a SIP server, comprising: establishing a persistent connection with a user agent (UA); initiating an idle connection timeout countdown timer; performing authentication of an initial REGISTER request using a first level of authentication; and terminating the persistent connection when the initial REGISTER request is not validated before expiry of the idle connection timeout countdown timer.

Abstract: A device and method are described for establishing a dialog between Internet Protocol (IP) end points using a peer-to-peer (P2P) architecture. The device, method and computer readable memory utilize servers to determine one or more possible addresses to attempt the dialog establish using. The device and methods described allow for an early discovery of an end point address which can be used for the dialog establishment.

Abstract: A mobile device can send a notification to place a call using a PBX (e.g., using SIP signaling) or receive a notification of call availability for the mobile device at the PBX. An authentication token is provided over a data channel for use in authenticating the mobile device when calling the PBX on a voice channel. However, when the mobile device calls the PBX (e.g., on a DNIS number, where ANI information is made available to an application server), if ANI information is found to correspond to the mobile device, the PBX can send tone(s) indicating that the mobile device can respond with an abbreviated validation tone, rather than the entirety of the authentication token. If the ANI information is not obtained or not matched, then a different tone(s) is sent, indicating to provide the authentication token. If the authentication token provided does not match or if the mobile device does not respond, the voice channel is not set up.

Abstract: A mobile device can send a notification to place a call using a PBX (e.g., using SIP signaling) or receive a notification of call availability for the mobile device at the PBX. An authentication token is provided over a data channel for use in authenticating the mobile device when calling the PBX on a voice channel. However, when the mobile device calls the PBX (e.g., on a DNIS number, where ANI information is made available to an application server), if ANI information is found to correspond to the mobile device, the PBX can send tone(s) indicating that the mobile device can respond with an abbreviated validation tone, rather than the entirety of the authentication token. If the ANI information is not obtained or not matched, then a different tone(s) is sent, indicating to provide the authentication token. If the authentication token provided does not match or if the mobile device does not respond, the voice channel is not set up.

Abstract: An apparatus, and an associated method, for a communication device having a SIM card, or other removable storage element, that permits hot-swapping of the storage element. Notification of hot-swapping of the removable storage element is detected. Responsive to the detection, provision is made to resubscribe to push service notifications that are disabled upon removal of the removable storage element.

Abstract: Systems and methods are described that allow a calling party to establish a dialog, or attempt to establish a dialog, with multiple devices associated with the party being called, even when the calling party does not know a user identifier associated with the multiple devices. A calling party may provide a device specific identifier, which can be resolved to a user identifier associated with the multiple devices.

Abstract: A device and method are described for establishing a dialog between Internet Protocol (IP) end points using a peer-to-peer (P2P) architecture. The device, method and computer readable memory utilize servers to determine one or more possible addresses to attempt the dialog establish using. The device and methods described allow for an early discovery of an end point address which can be used for the dialog establishment.

Abstract: The present disclosure provides a system and method to preserve dialogs in clustered environments in case of node failure. In accordance with one embodiment, there is provided a method for performing a transaction call between an originating device and a terminating device, comprising: receiving, by a originating proxy server in a first cluster, a SIP message from the originating device over a first connection; and sending, by the originating proxy server, the SIP message to a routing proxy server in a second server cluster.

Abstract: The present disclosure provides a system and method for Session Initiation Protocol (SIP) user agent identification and efficient binding. In accordance with one example embodiment, there is provided a method for use on a Session Initiation Protocol (SIP) registration server for registering user agents, comprising: receiving a REGISTER message which includes a binding key; determining whether a prior binding associated with the binding key exists in a registration repository; and creating a new binding associated with the binding key and adding the new binding to the registration repository when no prior binding associated with the binding key exists in the registration repository.

Abstract: The present disclosure provides a system and method for applying authentication and security policies in a SIP environment. In accordance with one embodiment, there is provided a method for use on a SIP server, comprising: establishing a persistent connection with a user agent (UA); initiating an idle connection timeout countdown timer; performing authentication of an initial REGISTER request using a first level of authentication; and terminating the persistent connection when the initial REGISTER request is not validated before expiry of the idle connection timeout countdown timer.