Abstract: A call session control function (CSCF) receives, from a first user device engaged in a call with a second user device, a first Session Initiation Protocol (SIP) signaling message piggybacked with first data related to a voice quality of an inbound direction of the call at the first user device. The CSCF receives, from a second user device engaged in the call with the first user device, a second SIP signaling message piggybacked with second data related to a voice quality of an inbound direction of the call at the second user device. The CSCF extracts the first data related to the voice quality from the first SIP signaling message, and extracts the second data related to the voice quality from the second SIP signaling message. A charging collection function (CCF) determines a bi-directional voice quality of the call based on the first data and the second data.

Abstract: A device receives application information associated with applications provided by a network, and determines service package identifiers for one or more applications identified in the application information. The device also receives information associated with devices and subscribers of the network, and determines security key parameters based on the information associated with the devices and the subscribers of the network. The device further generates, based on the security key parameters, a security key for each of the service package identifiers.

Abstract: A method includes a network device receiving a request from a user, to deliver a short messaging service (SMS) message, to another user, where the other user is roaming; sending, to a first device, a user registration query; receiving, from the first device and by the network device, a user registration response, where the user registration response indicates whether the other user, in which the SMS message is to be delivered, is registered with zero networks, one network, or two networks; forwarding, by the network device, the SMS message associated with the request, via at least one of the one network or the two networks, when the user registration response indicates that the other user is registered with at least one of the one network or the two networks; and sending to a second device, by the network device, another user registration query, when the user registration response indicates that the other user is registered with zero networks.

Abstract: A call session control function (CSCF) receives, from a first user device engaged in a call with a second user device, a first Session Initiation Protocol (SIP) signaling message piggybacked with first data related to a voice quality of an inbound direction of the call at the first user device. The CSCF receives, from a second user device engaged in the call with the first user device, a second SIP signaling message piggybacked with second data related to a voice quality of an inbound direction of the call at the second user device. The CSCF extracts the first data related to the voice quality from the first SIP signaling message, and extracts the second data related to the voice quality from the second SIP signaling message. A charging collection function (CCF) determines a bi-directional voice quality of the call based on the first data and the second data.

Abstract: A device receives application information associated with applications provided by a network, and determines service package identifiers for one or more applications identified in the application information. The device also receives information associated with devices and subscribers of the network, and determines security key parameters based on the information associated with the devices and the subscribers of the network. The device further generates, based on the security key parameters, a security key for each of the service package identifiers.

Abstract: A method includes a network device receiving a request from a user, to deliver a service messaging service (SMS) message, to another user, where the other user is roaming; sending, to a first device, a user registration query; receiving, from the first device and by the network device, a user registration response, where the user registration response indicates whether the other user, in which the SMS message is to be delivered, is registered with zero networks, one network, or two networks; forwarding, by the network device, the SMS message associated with the request, via at least one of the one network or the two networks, when the user registration response indicates that the other user is registered with at least one of the one network or the two networks; and sending to a second device, by the network device, another user registration query, when the user registration response indicates that the other user is registered with zero networks.