Abstract: Solutions for providing a data traffic session with proxy-call session control function (P-CSCF) restoration include: receiving an indication, by an application server (AS), that a user equipment (UE) registered with a first proxy node; receiving, by the AS, from a call session control function, a first indication that the first proxy node is unavailable; based on at least receiving the first indication that the first proxy node is unavailable, transmitting, by the AS, to a subscriber information node, a first message triggering proxy node restoration (e.g., over an N71 interface); receiving an indication, by the AS, that the UE is registered with a second proxy node different than the first proxy node; and based on at least receiving a session initiation message, establishing the data traffic session for the UE with the second proxy node.

Abstract: Solutions for providing a data traffic session with proxy-call session control function (P-CSCF) restoration include: receiving an indication, by an application server (AS), that a user equipment (UE) is registered with a first proxy node (e.g., a P-CSCF); subscribing, by the AS, with a status repository, to a status of the first proxy node; receiving, by the AS, from the status repository, an indication that the first proxy node is unavailable; based on at least receiving the indication that the first proxy node is unavailable, transmitting, by the AS, to a subscriber information node, a first message triggering proxy node restoration; receiving an indication, by the AS, that the UE is registered with a second proxy node different than the first proxy node; and based on at least receiving a session initiation message, establishing the data traffic session for the UE with the second proxy node.

Abstract: In a telecommunication network, network slices can be identified by slice identifiers used within a core network. The same slice identifiers can also be used by elements of an IP Multimedia Subsystem (IMS) to identify the network slices. For example, a Home Subscriber Server (HSS) can be provisioned with user data associated with a user equipment (UE), including a slice identifier of a network slice that the UE is assigned to use. The HSS can provide the slice identifier to an S-CSCF in the IMS when the UE registers with the IMS. The S-CSCF can share the slice identifier with other IMS elements, such as a P-CSCF and/or one or more application servers. Accordingly, the IMS elements can determine key performance indicators (KPIs) and perform other operations in association with usage of network slices by UEs, based on the same slice identifiers used within the core network.

Abstract: As described herein, one of a third generation (3G) radio access network (RAN) or a fifth generation (5G) RAN may be selected to receive a handover of a communication session from a fourth generation (4G) RAN. The 3G RAN or 5G RAN may be selected based on at least one of performance measurements for the 3G RAN and the 5G RAN, a preference for the 3G RAN or the 5G RAN, or a performance threshold for the 3G RAN or for the 5G RAN. The handover to the selected one of the 3G RAN or 5G RAN may then be initiated.

Abstract: Disclosed is a system and method to route a call from a roaming UE on a 5G network. The system receives from a UE belonging to a home network an indication of a call to a dialed number. The call requires information associated with the UE that is not available to the first wireless telecommunication network, because the UE is roaming on a visitor network. The indication of the call includes a unique identifier of the visitor network. The system can determine based on the unique identifier that the UE is roaming and send a request to the visitor network to provide instructions on how to route the received call. Upon obtaining the instructions on how to route the received call, the system routes the received call.

Abstract: An IP Multimedia Subsystem Service Control Point (IMS-SCP) module of a carrier network may provide trigger management for a request for a circuit switched (CS) call. For example, an IMS-SCP module may receive an request for a CS call associated with a user equipment. The IMS-SCP module may determine handling of the request for the CS call includes one or more first operations by a first feature platform and one or more second operations by a second feature platform. In response to the determining, the IMS-SCP module may perform trigger management associated with the request for the CS call. The trigger management may include invoking, by the IMS-SCP module, the one or more first operations of the first feature platform and, subsequent to the invoking the one or more first operations, invoking the one or more second operations of the second feature platform.

Abstract: Disclosed is a system and method to route a call from a roaming UE on a 5G network. The system receives from a UE belonging to a home network an indication of a call to a dialed number. The call requires information associated with the UE that is not available to the first wireless telecommunication network, because the UE is roaming on a visitor network. The indication of the call includes a unique identifier of the visitor network. The system can determine based on the unique identifier that the UE is roaming and send a request to the visitor network to provide instructions on how to route the received call. Upon obtaining the instructions on how to route the received call, the system routes the received call.

Abstract: Systems and methods for establishing a communication interface between control functions of a network core and a network data node associated with a user side packet core are discussed herein. The system can enable configuration information to be stored and dynamically updated by the network data node such that control nodes of the user side packet core requesting service from the network core are provided with up to date configuration information associated with active control functions. As control functions are activated and deactivated, the configuration information can be updated to reflect the current state of the network core and ensure that user device connects are routed to active control functions configured to provide user requested services.

Abstract: The present disclosure describes techniques that facilitate detecting a Voice over Long-Term Evolution (VoLTE) call request with a recipient call number that lacks a country code. The VoLTE call request may be initiated by a subscriber device while roaming in a VPLMN. Specifically, a Normalization and Alert Policy (NAP) system is described that is configured to analyze the VoLTE call request and determine an intended country code and adjust the recipient call number to include the country code. Further, the NAP system may analyze the adjusted recipient call number to determine whether initiating a VoLTE call in response to the VoLTE call request may trigger an alert condition. An alert condition may relate to determining that the VoLTE call request may initiate a cost-prohibitive VoLTE communication or that the VoLTE call request relates a fraudulent communication.

Abstract: Systems and methods for providing improved network service allocation. Rather than providing all-or-nothing network service allocation to users, the system can use the mobile country code (MCC) and mobile network code (MNC) to provide access to different services to different users. The services provided to each roaming user, for example, can be negotiated in a roaming agreement with the user's provider. The roaming user can then be provided access to only those services agreed to in the roaming agreement. A home provider can also use multiple MNCs to provide similar service allocation to home users, with each MNC providing a different combination of services. The home provider can also use mobile subscriber identification numbers (MSINs), or ranges of MSINs, to provide service allocation for home users.

Abstract: A routing device of a telecommunications network can receive an initiation request of a communication session. The initiation request can include a destination identifier associated with a terminal. The routing device can query a responder for terminal-associated serving-network information. The routing device can then forward the initiation request to a serving network identified by the serving-network information. In some examples, the responder can query a registry for network-attachment information indicating a current media path associated with the terminal. The responder can provide the serving-network information based at least in part on the network-attachment information. In some examples, the destination identifier can include a global name, and the serving-network information can include an associated local name In some examples, the routing device can include an S-CSCF or ISBC, the responder can include an ENUM server, or the registry can include an HSS.

Abstract: An IP Multimedia Subsystem Service Control Point (IMS-SCP) module of a carrier network may provide trigger management for a request for a circuit switched (CS) call. For example, an IMS-SCP module may receive an request for a CS call associated with a user equipment. The IMS-SCP module may determine handling of the request for the CS call includes one or more first operations by a first feature platform and one or more second operations by a second feature platform. In response to the determining, the IMS-SCP module may perform trigger management associated with the request for the CS call. The trigger management may include invoking, by the IMS-SCP module, the one or more first operations of the first feature platform and, subsequent to the invoking the one or more first operations, invoking the one or more second operations of the second feature platform.

Abstract: An IP Multimedia Subsystem Service Control Point (IMS-SCP) module of a carrier network may provide trigger management for a request for a circuit switched (CS) call. For example, an IMS-SCP module may receive an request for a CS call associated with a user equipment. The IMS-SCP module may determine handling of the request for the CS call includes one or more first operations by a first feature platform and one or more second operations by a second feature platform. In response to the determining, the IMS-SCP module may perform trigger management associated with the request for the CS call. The trigger management may include invoking, by the IMS-SCP module, the one or more first operations of the first feature platform and, subsequent to the invoking the one or more first operations, invoking the one or more second operations of the second feature platform.

Abstract: Systems and methods for providing improved network service allocation. Rather than providing all-or-nothing network service allocation to users, the system can use the mobile country code (MCC) and mobile network code (MNC) to provide access to different services to different users. The services provided to each roaming user, for example, can be negotiated in a roaming agreement with the user's provider. The roaming user can then be provided access to only those services agreed to in the roaming agreement. A home provider can also use multiple MNCs to provide similar service allocation to home users, with each MNC providing a different combination of services. The home provider can also use mobile subscriber identification numbers (MSINs), or ranges of MSINs, to provide service allocation for home users.

Abstract: Systems and methods for providing improved network service allocation. Rather than providing all-or-nothing network service allocation to users, the system can use the mobile country code (MCC) and mobile network code (MNC) to provide access to different services to different users. The services provided to each roaming user, for example, can be negotiated in a roaming agreement with the user's provider. The roaming user can then be provided access to only those services agreed to in the roaming agreement. A home provider can also use multiple MNCs to provide similar service allocation to home users, with each MNC providing a different combination of services. The home provider can also use mobile subscriber identification numbers (MSINs), or ranges of MSINs, to provide service allocation for home users.

Abstract: This disclosure describes a video interconnect system that may establish a Video over Long Term Evolution (ViLTE) communication session between two interacting client devices. In some examples, the video interconnect system may selectively establish a ViLTE communication based on one or more rules associated with the domain information of interacting client devices, availability of network bandwidth, bandwidth consumption of a video component of the ViLTE communication, or established service agreements between telecommunication service providers of the interacting client devices. Further, the video interconnect system may facilitate generating termination charges for a video and/or audio communication session of a ViLTE communication. For example, a video component of the ViLTE communication may be charged and metered based on data usage, and an audio component of the ViLTE communication may be charged and metered based on the duration and relative location of the interacting client devices.

Abstract: The present disclosure describes techniques that facilitate detecting a Voice over Long-Term Evolution (VoLTE) call request with a recipient call number that lacks a country code. The VoLTE call request may be initiated by a subscriber device while roaming in a VPLMN. Specifically, a Normalization and Alert Policy (NAP) system is described that is configured to analyze the VoLTE call request and determine an intended country code and adjust the recipient call number to include the country code. Further, the NAP system may analyze the adjusted recipient call number to determine whether initiating a VoLTE call in response to the VoLTE call request may trigger an alert condition. An alert condition may relate to determining that the VoLTE call request may initiate a cost-prohibitive VoLTE communication or that the VoLTE call request relates a fraudulent communication.

Abstract: An application function (AF) of an IP Multimedia Subsystem (IMS) can be in communication with multiple Policy Control Function (PCF) domains of a telecommunication network. The AF can review attributes of a particular communication session, and identify a particular one of the PCF domains that corresponds to the attributes. The AF can then send a request about the communication session to a PCF element of the identified PCF domain over an Rx interface.

Abstract: An application function (AF) of an IP Multimedia Subsystem (IMS) can be in communication with multiple Policy Control Function (PCF) domains of a telecommunication network. The AF can review attributes of a particular communication session, and identify a particular one of the PCF domains that corresponds to the attributes. The AF can then send a request about the communication session to a PCF element of the identified PCF domain over an Rx interface.

Abstract: Systems and methods for providing improved network service allocation. Rather than providing all-or-nothing network service allocation to users, the system can use the mobile country code (MCC) and mobile network code (MNC) to provide access to different services to different users. The services provided to each roaming user, for example, can be negotiated in a roaming agreement with the user's provider. The roaming user can then be provided access to only those services agreed to in the roaming agreement. A home provider can also use multiple MNCs to provide similar service allocation to home users, with each MNC providing a different combination of services. The home provider can also use mobile subscriber identification numbers (MSINs), or ranges of MSINs, to provide service allocation for home users.