Abstract: Systems and methods are provided for implementing an IP multimedia services or subsystem (“IMS”) within a communication network. One system may include a server configured to facilitate multimedia communication services via the IMS. The server may include a memory storing an integrated IMS function and an electronic processor communicatively coupled to the memory. The electronic processor may be configured to receive, with the integrated IMS function, a request to establish a multimedia communication session for a user equipment (“UE”) device over the communication network; and establish and control, with the integrated IMS function, the multimedia communication session for UE device over the communication network.

Abstract: According to various embodiments, the systems and methods disclosed herein can utilize a blocking service to prevent malfunctioning NF instances from being discovered by consumer NF instances in discovery requests within a wireless network (e.g., a 5G network). The blocking service can be integrated into an NRF of the wireless network and can be used to add a malfunctioning NF instance to a block list. Additionally, the blocking service can prevent any malfunctioning NF instance on the block list from being returned to a consumer NF instance during a discovery request. When an NF producer instance is determined to be malfunctioning and subsequently added to the block list, the blocking service can trigger a notification to be sent to an NF consumer instance that is utilizing the affected NF producer instance. Upon receipt of this notification, the NF producer instance can cease its consumption of the malfunctioning producer NF instance.

Abstract: The present teachings disclose a system and method for accessing a cellular network system including: checking, at a Serving Call Session Control Function (SCSCF), legitimacy of an International Mobile Equipment Identity (IMEI) included in an registration request with an Equipment Identity Register (EIR) check; determining a SCSCF action based on a response code of an EIR response from the EIR check; and performing the SCSCF action, wherein the registration request comprises an IP Multimedia Subsystem (IMS) REGISTER.

Abstract: According to various embodiments, systems and methods disclosed herein can configure a profile of at least one NF of a 5G network to support a plurality of requester NF types, including the type of network repository function (NRF). The NF profile can be registered with the NRF of the 5G network. Such NF profile configurations and registrations enable the at least one NF to be discovered by discovery requests that use NRF or a consumer NF type as the requester NF type, thus increasing interoperability between the HPMN and roaming partners that use different requested NF types in their NF discovery requests.

Abstract: Systems and methods are provided for implementing an IP multimedia services or subsystem (“IMS”) within a communication network. One system may include a server configured to facilitate multimedia communication services via the IMS. The server may include a memory storing an integrated IMS function and an electronic processor communicatively coupled to the memory. The electronic processor may be configured to receive, with the integrated IMS function, a request to establish a multimedia communication session for a user equipment (“UE”) device over the communication network; and establish and control, with the integrated IMS function, the multimedia communication session for UE device over the communication network.

Abstract: According to various embodiments, systems and methods disclosed herein can extract an actual address of a visitor location register (VLR) and an actual address of a mobile switching center (MSC) from signaling messages from a circuit-switched (CS) network in a foreign country and forward the actual addresses to a wireless network (e.g., a 5G network) whose subscriber is roaming in the foreign country through the CS network. The wireless network can use the actual address to determine the identity of the roaming country and the identity of the CS network so that the wireless network can exercise roaming control (e.g., authorizing or rejecting roaming calls) and billing users of the roaming subscribers based on which countries they are roaming in.

Abstract: A system to distinguish internal network routing issues within a user plane function (UPF) from external routing issues via multi-domain system (DNS) servers probing is disclosed. The system determines latency in communication between a given UPF and each of a plurality of DNS servers. The system compares each latency with a threshold latency value. If it is determined that each of the latencies in communication between the UPF and each DNS server is more than the threshold latency values, the system may determine that there is an internal network routing issue at the UPF that caused the high latencies. If it is determined that a latency in communication between the UPF and a particular DNS server is more than the threshold latency value, the system may determine that the latency is caused by a network routing issue at the particular DNS server—which is external to the UPF.

Abstract: A disclosed method may include (i) implementing, within a cloud computing platform, a hierarchical quality-of-service policy that includes a parent quality-of-service sub-policy in relation to a child quality-of-service sub-policy, (ii) receiving telecommunication traffic as part of a cellular service platform implemented through the cloud computing platform, and (iii) applying, within the cloud computing platform, the hierarchical quality-of-service policy to the telecommunication traffic to satisfy a predetermined level of quality of service.

Abstract: An apparatus is communicatively coupled to a plurality of databases in a service-based architecture and comprises a memory and a processor. The memory stores multiple configuration commands. The processor is configured to generate a request to establish a communication session in which a network component accesses a first database and a second database based at least in part upon a configuration command of the configuration commands. The network component exchanges connectivity signals with the first database and the second database. The first database provides database operations in response to the connectivity signals exchanged with the network component. The first database reports to the second database that the database operations are provided. The processor is further configured to, in response to determining that the communication session between the network component and the first database is lost, maintain the communication session to access the second database.

Abstract: An apparatus is configured to communicate with multiple network components in a service-based architecture and comprises a memory and a processor. The memory stores multiple configuration commands. The processor is configured to generate a request to establish a communication session between a first network component, a second network component, and a third network component. The first network component exchanges connectivity signals with the second network component and the third network component. The second network component performs first plurality of session operations in response to the connectivity signals exchanged with the first network component. The second network component reports to the third network component that the first session operations are performed.

Abstract: An apparatus is configured to communicate with multiple network components in a service-based architecture and comprising a memory and a processor. The memory stores multiple configuration commands; multiple local provisioning parameters; and a configuration script. Each local provisioning parameter is a backup copy of a corresponding configuration command. The processor is configured to generate a request to establish a communication session between a first network and a second network component. Further, the processor is configured to establish the communication session between the first network component and the second network component based at least in part upon a configuration command; determine that the communication session is lost based at least in part upon identifying an interruption in the communication session; and execute the configuration script to instruct the first network component to establish a backup communication session based at least in part upon a local provisioning parameter.

Abstract: Systems, methods, and non-transitory, machine-readable media facilitate continuation of voice services in the event of failure of a subscriber data layer in a wireless network. A cellular network core may include one or more servers. An emergency server may be configured to, during non-emergency operations of the cellular network core, collect subscriber mapping data. The subscriber mapping data may correspond to subscriber phone numbers and international mobile subscriber identities (IMSIs) for particular user equipment (UE). The emergency server may be further configured to, during non-emergency operations of the cellular network core, store the subscriber mapping data in storage, where the storage is not shared with the cellular network core. The emergency server may be further configured to, during an emergency mode, use a mapping of the subscriber phone numbers and/or the IMSIs for the particular UE to facilitate completion of one or more voice calls.

Abstract: Systems and methods for group monitoring and management of network function statuses are provided. In one example, a method includes: generating a group query for statuses of a plurality of network functions of a network, in response to the group query performing group monitoring of the plurality of network functions to check the real-time status of each one of the plurality of network functions, receiving data corresponding to real-time status of each network function, comparing the data corresponding to real-time status with data corresponding to reference status for each one of the plurality of network functions, identifying presence or absence of an anomaly of each one of the plurality of network functions, based on the comparison, and generating a network function status output including data corresponding to the real-time status and an indication of the presence or absence of an anomaly for each network function.

Abstract: A disclosed method may include (i) maintaining a database that maps cellular reference link types to geographic hubs that include a respective cellular network node connected through a respective cellular reference link type, (ii) cycling through the database, within a portion of the database for a specific cellular reference link type, to perform a ping operation from each respective geographic hub mapped to the specific cellular reference link type, and (iii) displaying, through a graphical user interface, results to an administrator indicating which ping operations from the cycling through the database indicated a failure such that the administrator is enabled to perform a remediation operation. Various other systems and computer-readable mediums are further disclosed.

Abstract: A disclosed method may include (i) establishing an Internet Protocol Multimedia Subsystem instance, (ii) aggregating, within the Internet Protocol Multimedia Subsystem instance, multiple distinct cloud native functions that are associated with the Internet Protocol Multimedia Subsystem instance such that the multiple distinct cloud native functions communicate through a single Internet Protocol address, and (iii) directing outbound communications from the multiple distinct cloud native functions associated with the Internet Protocol Multimedia Subsystem instance through the single Internet Protocol address. Various other systems and computer-readable mediums are further disclosed.

Abstract: A disclosed method may include (i) disposing a network access table gateway between a multimedia service center within a cellular service network and a telecommunications server of an external wireless network provider that has partnered with the cellular service network, (ii) receiving, at the network access table gateway, a network packet that was sent from the telecommunications server of the external wireless network provider and that is directed to a public Internet Protocol address of the network access table gateway, and (iii) routing, by referencing a network access table of the network access table gateway, the network packet to a destination within the cellular service network. Related systems and computer-readable mediums are further disclosed.

Abstract: A disclosed method may include (i) obtaining, by a home cellular network service provider from a roaming cellular network service provider, a list of identifiers indicating respective ranges of Internet Protocol addresses that are targets for remote packet data nodes of the roaming cellular network service provider, (ii) for each respective server, in a list of respective servers that the home cellular network service provider assigned to respective geographic hubs, pinging through an on-demand cloud computing platform each usable Internet Protocol address indicated by each respective identifier in the list of identifiers, and (iii) discovering, by the home cellular network service provider, in response to the pinging, which Internet Protocol addresses indicated a healthy remote packet data node of the roaming cellular network service provider.

Abstract: Systems and methods for group monitoring and management of network function statuses are provided. In one example, a method includes: generating a group query for statuses of a plurality of network functions of a network, in response to the group query performing group monitoring of the plurality of network functions to check the real-time status of each one of the plurality of network functions, receiving data corresponding to real-time status of each network function, comparing the data corresponding to real-time status with data corresponding to reference status for each one of the plurality of network functions, identifying presence or absence of an anomaly of each one of the plurality of network functions, based on the comparison, and generating a network function status output including data corresponding to the real-time status and an indication of the presence or absence of an anomaly for each network function.

Abstract: A system of a wireless telecommunication network may categorize each cell site of a plurality of cell sites in the network into at least one respective technical access category (TAC) of a plurality of TACs. The plurality of TACs may include one or more TACs indicating one or more characteristics of a portion of a network provided by a cell site. For each user equipment device (UE) of a plurality of UEs, the system restricts access of the UE to particular cell sites of the network based on respective TACs of the particular cell sites. The restricting access of the UE to particular cell sites may also be based on characteristics of the UE or a subscriber associated with the UE.

Abstract: Wireless communications systems and methods for facilitating inter-network communication and network function connections are provided. In one example, a method includes: receiving a roaming request from a user equipment (UE) subscribed to a home network and roaming into a visited network, determining a plurality of first network functions (NFs) of the visited network, generating a Network Repository Function (NRF) discovery request for NFs of the home network, the NRF discovery request indicating an identity, operational parameters, and the plurality of first NFs of the visited network, asl well as requirements for NFs of the home network for establishing the inter-network NF connections, determining a plurality of second NFs of the home network according to the requirements of the NRF discovery request, generating an NRF discovery response indicating an identity, operational parameters, and the plurality of second NFs of the home network, and verifying the plurality of second NFs.