Apparatus and methods concerning call routing are disclosed. In an example embodiment, a call alert message, indicative of the call answer options, is communicated from a data-communications server to the communication device, determined in response to receiving an incoming call for a communication device at the server. A selected option is received from the communication device. In response to the selected option indicating the first call answer option, the call is routed to the communication device as a call via a data network or in response to the selected option indicating the second call answer option, the call is routed to the communication device via a PSTN.

Systems and methods for determining if a service interruption is associated with a placed toll-free call and if so, routing future toll-free calls to an alternative carrier route to ensure that subsequently placed toll-free calls are connected with the toll-free subscriber.

A system, method and computer-readable medium for allowing the use of an alternative numbering plan for delivering short messages to mobile subscribers using the public mobile telephone network is provided. Users of an enterprise or other closed networks as well as users that are not part of a closed network may send short messages destined to members of an enterprise or closed network from their mobile or other devices associated with their subscription using an alternative enterprise directory number, such as the office number, instead of the mobile number, such that the alternative number will be presented at the destination device as the originating number. The recipient may respond to the message by addressing the response to the enterprise or closed network number, and the response may be delivered to the originator's mobile or other device associated with their subscription.

A system comprising: at least one hardware processor; and a non-transitory computer-readable storage medium having stored thereon program code, the program code executable by the at least one hardware processor to: receive, by an over-the-top (OTT) network server, from an OTT terminal application (OTA), a request to establish voice communication with a known external service; access, by said OTT network server, a database which comprises at least one routing option associated with said known external service; select, by said OTT network server, one of said routing options for establishing said voice communication; and establish said voice communication with said known external service using said selected routing option.

A Breakout Gateway Control Function (BGCF) determines a geographic location information (e.g., a major trading area (MTA) information) from a SIP INVITE header information (e.g., from a P-Access-Network-Info (PANI) header information) and modifies the SIP URI in the SIP INVITE request by adding, deleting, or modifying values (e.g., prepending a number prefix to the URI) to generate a SIP URI that is based on the geographic location information.

Briefly, a variety of embodiments, including the following, are described: a system embodiment and methods that allow random access to voice messages, in contrast to sequential access in existing system embodiments; a system embodiment and methods that allow for the optional use of voice recognition to enhance usability; and a system embodiment and methods that apply to the area of voicemail.

A method for processing a communication between a first party and a second party is disclosed. A communication is received from the first party, the communication having first party information, and second party information. An entry in a database is identified that matches at least one of the first party information and the second party information and for which a predetermined rule is satisfied. A telephone number associated with the matching database entry is selected. The selected telephone number is transmitted to the second party.

Methods and systems for establishing communication sessions between communication endpoints. A method for operating a first communication endpoint having a processor, memory and a transceiver for establishing communication sessions with other communication endpoints includes communicating with a second communication endpoint in a first communication session between the first communication endpoint and the second communication endpoint over a first communication network. The communicating comprises executing a first communication application at the first communication endpoint. The method further includes receiving, at the first communication endpoint, an invitation to establish a second communication session with a third communication endpoint over a communication network, wherein the first mobile communication endpoint is provisioned to handle the second communication session by executing a second communication application at the first communication endpoint. The method further includes processing the received invitation according to a specified call treatment option without interruption of the first communication session.

A method and system are described for servicing a second line service (“SLS”) based communication request originating from a subscriber's telecommunications device (“TD”) even if the call signal does not include sufficient information to identify the phone number from which the subscriber initiated the call. The method involves associating the SLS phone number of the subscriber, the primary number of the subscriber and the primary number of a third party via a special relationship number.

A method of associating multiple user endpoints (UEs) with a single IMS session in an IMS network having a serving node for controlling at least one IMS session for a user and at least a first access network for providing access to UEs. The method involves associating a first UE with the user and with an IMS session; discovering a second UE in a proximity of the first UE; discovering information about the second UE; communicating the information about the second UE to the serving node; the serving node utilizing computer-implemented policy logic to determine whether to associate the second UE with the user and the IMS session; and if the policy logic determines that the second UE is to be associated, the serving node associating the second UE with the IMS session while retaining the association with the first UE.