Systems and methods for managing non-associative communications between devices is provided. A first call chain that indicates a routing between phone numbers is stored. A first phone call or a first SMS text is received from a first session initiation protocol (SIP) provider. Based on information provided by the first SIP provider, (i) a sender identity of the first phone call or the first SMS text; (ii) a receiver identity of the first phone call or the first SMS text; and (iii) an access mode of the call chain are determined. If the receiver identity corresponds to a first phone number in the first call chain, a second phone call or a second SMS text is initiated via a second SIP provider, from a second phone number in the first call chain, based on the sender identity and the access mode.

Methods, apparatuses, and systems are described for selecting an access domain for receiving a speech and/or video call at a mobile station of a mobile communications network in which calls are routed via a central service control common to a plurality of access domains. In one method, a terminating mobile station receives an INVITE and then, if the access network supports neither simultaneous circuit switched (CS) and packet switched (PS) connections nor voice over internet protocol (VoIP), the terminating mobile station transmits a message indicating that a CS bearer is required for a session.

There is proposed a method and corresponding apparatuses allowing a change from a packet switched communication domain to a circuit switched communication domain. When a user equipment as a connection terminating point receives a connection initialization message with a media flow, such as audio, which cannot be delivered by the packet switched access, it sends a specific response rejecting the connection via the packet switched access to an application server for service centralization and continuity. In the application server, it is checked whether several conditions are met in order to determine whether the communication connection comprising the media flow is allowed to be changed to the circuit switched domain. If yes, the communication connection is changed from the packet switched communication domain to the circuit switched communication domain.

A communications adaptor comprising an adaptor first port; an adaptor second port; an adaptor third port; and a processor. The adaptor first port is configured to connect to an analog communications line. The adaptor second port is configured to connect to a data network. The adaptor third port is configured to connect to an analog telephony device. The processor is configured to determine that a first call setup request signal has been received at the adaptor first port. The processor is further configured, subsequent to such determination: (1) to transmit a second call setup request signal over the adaptor second port to an Internet Protocol (IP) telephony system over the data network; and (2) to transmit a third call setup request signal over the adaptor third port.

A method, apparatus and computer program product are provided to facilitate the handover from a packet switched network to a circuit switched network while an Internet protocol (IP) multimedia subsystem (IMS) session is ongoing. In the context of a method, a notification is received of the handover from a packet switched network to a circuit switched network while an IMS session is ongoing. The method also receives an indication that an emergency call service is active in the IMS session and determines that media resources in the circuit switched network are required to support the emergency call service, as supplemented by a minimum set of emergency related data, that is active in the IMS session. The method may further include causing the media resources to be reserved in the circuit switched network to support the emergency call service that is active in the IMS session.

Methods for transporting a media call between an IMS server and a User Equipment (UE) and of handing over the media call between a cellular network and a WLAN are provided. In an embodiment, the media call data and signaling are split such that the data is transported over the WLAN and the signaling is transported over the cellular network. In another embodiment, handover latency is reduced by using a dual registration process that registers the UE with an IMS server using both a WLAN-based contact and a cellular network-based contact. The media call can then be carried over the WLAN and/or the cellular network and can be handed over seamlessly from one to the other within minimal signaling.

A method including determining that a device is connected to a first communication network; establishing, via the first communication network, a multimedia session with the device serving as a first endpoint of the multimedia session via the first communication network; determining that the device is connected to a second communication network while the multimedia session is ongoing, wherein the second communication network is different than the first communication network; requesting via the second communication network, in response to determining that the device is connected to the second communication network while the multimedia session is ongoing, that the first endpoint of the multimedia session be replaced with the device serving as a second endpoint of the multimedia session via the second communication network; and continuing, after the request that the first endpoint of the multimedia session be replaced, the multimedia session via the second communication network

A mobile device is provided. The mobile device includes a memory configured to store a plurality of applications, a communication circuit including a first communication module and a second communication module, and a processor electrically connected with the communication circuit. The processor is configured to execute an application among the plurality of applications, determine a communication state of the first network and a communication state of the second network in response to executing the application, select one of the first network and the second network based on the communication state of the first network, the communication state of the second network, a tariff applied to the mobile device, a service policy applied to the application, performance criteria applied to the application, and network selection criteria, and download data from a server associated with the application using the selected network.

A method to manage call continuity in a network environment including a circuit-switched network and an IP multimedia subsystem (IMS) network is provided. A UE monitors one or more ongoing sessions in an IMS network, and the ongoing sessions contain at least one conference call. The UE detects a network-switching event for the UE to switch from the IMS network to a circuit-switched CS network. The UE then determines the one or more ongoing sessions within the IMS network to be released or transferred to the CS network. Finally, the UE performs a session transfer procedure for transferring the determined sessions.

Systems and methods for delivering content to user equipment are described. The content may be delivered using Internet Protocol (IP) delivery, Quadrature Amplitude Modulation (QAM) delivery, or another delivery format. For example, the system may receive content including a plurality of segments. The system may use manifest data to identify each of the plurality of segments. The system may also use the manifest data to generate index data for the plurality of segments, and the index data may be delivered to user devices with the plurality of segments. In some aspects, the system may use location information (e.g., timestamps, such as program clock references) for one or more data packet of the one of the plurality of segments to generate location information for other data packets.