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.

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.

The present disclosure relates to a pre-5.sup.th-Generation (5G) or 5G communication system to be provided for supporting higher data rates Beyond 4.sup.th-Generation (4G) communication system such as Long Term Evolution (LTE). Embodiments herein achieve a UE for managing a user plane operation in a wireless communication system. The UE includes a user plane management unit coupled to a memory and a processor. The user plane management unit is configured to receive a signaling message from a gNodeB. Further, the user plane management unit is configured to determine whether the signaling message includes control information comprising one of a PDCP re-establish indication and a security key change indication. Further, the user plane management unit is configured to perform the at least one operation for at least one data radio bearer based on the determination.

A redirection and messaging system receives telephony information identifying a caller and call context from a telephony system. The system selects one of a plurality of messaging operators based on the call context, optionally sends an introductory message to the caller via a messaging service, and generates a message interface for the selected message operator. The message interface includes the caller and call context and any messages sent between the caller and the selected message operator, with an input interface allowing the selected message operator to input and send messages to the caller.

A video call processing method includes receiving a substitution request that a video call being performed by a mobile device be performed by the display device, generating, by the display device based on the substitution request, a notification signal corresponding to the substitution request, and transmitting, before a video call screen that includes an image of a counterpart of the video call is output by the display device, the notification signal to a counterpart device, which is a mobile device of the counterpart.

A video call processing method includes receiving a substitution request that a video call being performed by a mobile device be performed by the display device, generating, by the display device based on the substitution request, a notification signal corresponding to the substitution request, and transmitting, before a video call screen that includes an image of a counterpart of the video call is output by the display device, the notification signal to a counterpart device, which is a mobile device of the counterpart.

Aspects of the subject disclosure may include, for example, a method of receiving, by a processing system including a processor, a call for a subscriber; determining, by the processing system, that the call is from an interactive voice response (IVR) system; determining whether the IVR system is providing a query that requires a response; and responsive to a first determination that the IVR system requires the response, providing the response. Other embodiments are disclosed.

Aspects of the subject disclosure may include, for example, a method of receiving, by a processing system including a processor, a call for a subscriber; determining, by the processing system, that the call is from an interactive voice response (IVR) system; determining whether the IVR system is providing a query that requires a response; and responsive to a first determination that the IVR system requires the response, providing the response. Other embodiments are disclosed.

A method for redirecting a communication request sent by a caller terminal to a called terminal, an identifier of the caller terminal being absent from a list of identifiers of caller terminals for which the establishment of a communication with the called terminal is authorized or blocked, referred to as a white list or black list, respectively. The method includes: redirecting the communication request to a redirection terminal associated with the called terminal, distinct from the called terminal; receiving an instruction message, including the identifier of the caller terminal and an instruction relating to the white list or to the black list, depending on the instruction received, adding the identifier of the caller terminal to the white list or to the black list.

A method for redirecting a communication request sent by a caller terminal to a called terminal, an identifier of the caller terminal being absent from a list of identifiers of caller terminals for which the establishment of a communication with the called terminal is authorized or blocked, referred to as a white list or black list, respectively. The method includes: redirecting the communication request to a redirection terminal associated with the called terminal, distinct from the called terminal; receiving an instruction message, including the identifier of the caller terminal and an instruction relating to the white list or to the black list, depending on the instruction received, adding the identifier of the caller terminal to the white list or to the black list.