A mobile device identifies multiple, different networks available to a client resident on the mobile device, and sends multiple registration messages to an outbound proxy over the multiple, different networks via first, second and third communication interfaces. The mobile device determines whether access has been lost to a first network of the multiple different networks, and sends an invite message via the second communication interface, based on the determination, for an outbound call via a second network of the multiple, different networks for routing the outbound call via the second network.

A differentiated routing system includes a computer-executable system to receive a request from a first network gateway of a native network for establishing a communication service from a calling party terminal to a called party terminal. Upon receipt of the request, the system determines that policy information is not known for the calling party terminal that has originated the request, and therefore append a tag to the request in which the tag indicates that the requested communication service is to be established using one or more generic policies. The generic policies include one or more default policies to be used for establishing the communication service. The system then transmits the request to a routing device, wherein the routing device determines how the communication service is routed through the native network according to the one or more generic policies.

An inmate communication system and method of using are described herein for obtaining a lowest session rate. The inmate communication system includes a session boarder controller (SBC) server that analyses data from multiple carriers, historical sessions, and additional factors such as quality of service to determine a lowest rate for the session. The SBC server then routes the session using the carrier that has the determined lowest rate for the session. Further, the SBC server is configured to include both local and location redundancies to avoid interruptions in session service.

Methods, systems, and devices for wireless communication are described. Mobile devices, such as a user equipment (UE), may be able to communicate over a number of different networks, such as a WWAN and a WLAN. Similarly, the UE may be able to perform calls using a number of different networks. At times, completing a call using a WWAN may be preferable to using a WLAN, and at other times completing a call using a WLAN may be preferable to using a WWAN. As such, a UE may receive a plurality of calls, may determine that the calls originate from a same user, may determine which network to select for completing the call, and may complete the call using the selected network. Similarly, a UE may share a vocoder and/or other call components between WWAN components and WLAN components to enable simultaneous initiation of calls on different networks.

A method includes establishing a circuit switched call with an automated answering system at a destination, the destination having a communication server associated therewith, transmitting a request to switch to Internet Protocol (IP) communication to the automated answering system, receiving an IP request acknowledgement message from the communication server responsive to transmitting the request to switch to IP communication, and establishing an IP communication session with the communication server responsive to receiving the IP request acknowledgement. Systems and computer program products are also disclosed.

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.

A system and method is disclosed for providing a conference call and enhanced conference call controls for traditional, for example circuit switched-only, and advanced, for example packet switched and dual circuit and packet switched, communication devices. The system includes components for receiving, transcoding, and distributing communication protocols from any suitable public, commercial, or otherwise known communication protocol source or architecture. In addition, the system includes components for dynamically transferring host control functions from one conference call participant while maintaining a conference call communication bridge, as well as components for maintaining a conference call communication bridge should a conference call host device become inadvertently disconnected.

In some implementations, an internet protocol multimedia subsystem (IMS) may receive a device identity of the user device as part of an emergency call. The IMS may transmit the device identity to an emergency call server (ECS). The IMS may receive, from the ECS, a subscriber identity of the user device. The IMS may transmit the subscriber identity to a public safety answering point (PSAP) through a next generation core services (NGCS) network that uses a Stir and Shaken protocol. The emergency call is then established with a true subscriber identity of the user device.

There are disclosed measures of network entity selection, for example including furnishing an identity of a network entity being pre-selected by a first network apparatus, and providing verification information for said pre-selected network entity identity, enabling to verify whether the pre-selected network entity identity is applicable for network entity selection at a second network apparatus.

A system and computer-implemented method for providing telephony communication services for VoIP or analog telephony devices using an on-premises gateway and remotely located VoIP system are described. Some implementations of the methods may include generating a configuration file mapping a plurality of tag extensions to a plurality of analog telephone ports of a high-density analog telephony adapter (HDATA), which may be communicatively coupled to the VoIP system. The VoIP system may transmit the configuration file to the HDATA, receive a telephony service request, and determine a tag extension based on the telephony service request. The VoIP system may transmit an identification of the tag extension to the HDATA and route a telephony service to the HDATA via the communication channel using the tag extension.