Techniques for preventing denial of call transfer are provided. For example, a method, comprises: indicating, in an apparatus, that a call pull is initiated; categorizing, in the apparatus, an access attempt occurred for the call pull as a mobile-terminated access attempt; and making, in the apparatus, the access attempt to a network by transmitting a message to enable a process for the call pull, wherein the message includes a cause value set according to the categorization of the access attempt. The method may be performed by a user equipment (UE).

The present disclosure provides an optimal method of delivering a called party's set video during a voice call connection to the calling party as video Customized Alerting Tones (CAT). More specifically, to generate a video call that delivers the video CAT in the form of early media from a voice call, the disclosure utilizes the early session model suggested by the 3GPP standard to provide a communication protocol for negotiating and establishing a session for the early media. Additionally, the present disclosure provides a method of performing exception handling in a communication protocol for video CAT delivery to ensure calling stability in abnormalities such as errors occurring in the codec negotiation process for video CAT in the network, server failure situations, and user equipment and server malfunctions.

The present disclosure provides an optimal method of delivering a called party's set video during a voice call connection to the calling party as video Customized Alerting Tones (CAT). More specifically, to generate a video call that delivers the video CAT in the form of early media from a voice call, the disclosure utilizes the early session model suggested by the 3GPP standard to provide a communication protocol for negotiating and establishing a session for the early media. Additionally, the present disclosure provides a method of performing exception handling in a communication protocol for video CAT delivery to ensure calling stability in abnormalities such as errors occurring in the codec negotiation process for video CAT in the network, server failure situations, and user equipment and server malfunctions.

A method and apparatus are provided for identifying In-Call capability features. The method includes sending, by a Mobile Originated (MO), a call request message to a Mobile Terminated (MT), wherein the call request message comprises information regarding In-Call capability features of the MO; receiving, by the MO, a call response message from the MT, wherein the call response message comprises information regarding In-Call capability features of the MT; and performing, by the MO, In-Call capability negotiation with the MT.

A method and apparatus are provided for identifying In-Call capability features. The method includes sending, by a Mobile Originated (MO), a call request message to a Mobile Terminated (MT), wherein the call request message comprises information regarding In-Call capability features of the MO; receiving, by the MO, a call response message from the MT, wherein the call response message comprises information regarding In-Call capability features of the MT; and performing, by the MO, In-Call capability negotiation with the MT.

An automated registration service supported on an application server that interoperates with an IMS (IP Multimedia Subsystem) core network is configured to dynamically register and deregister devices that are all associated with one or more commonly-utilized phone numbers. The service may assign the phone number to registered devices and, in contrast, un-assign the phone number from deregistered devices. The registration and deregistration of the devices may occur based on the amount of interaction with the device and other real-time contextual information. Furthermore, the automated registration service intelligently determines which registered devices to forward incoming video and/or audio calls to based on various contextual information, including the capabilities of device, identified location of a user, user preferences, etc. By intelligently selecting which devices should receive an incoming call, unnecessary use of bandwidth, data, and resources (e.g., battery power) can be reduced.

An adaptive cloud conversation platform capable of making automated decisions regarding when and how to establish ongoing communications with consumers so as to maximize the relationship between the consumer and a given brand. The system has a connection management services layer which determines what communications should be established and how they should be established, an initiation management services layer which determines when communications should be established, and a user management services layer which stores information about consumers and brands for determination of when and how communications should be established. Certain of these services have machine learning algorithms incorporated into them trained to perform analyses of the particular type of operation handled by that service.

The outputs of each service can be used as inputs to other services, such that a network of machine learnings algorithms is created which determines when and how to establish ongoing communications with consumers.

Video-assisted presence detection is used to enhance a user experience in telephony communications. Image data, video data, or both, from a camera are used to determine whether a user is present at their device before a call is transferred to him or her. The video-assisted presence detection can be implemented based on a privacy setting. For example, one implementation allows a system to have partial access to the camera to perform a scan to detect that there is a human present without capturing facial information, and without identifying that person. Another implementation allows the system to have partial access to the camera to scan the a face of a user, but not have access to the video feed of the camera. Another implementation allows the system to have full access to the camera.

Video-assisted presence detection is used to enhance a user experience in telephony communications. Image data, video data, or both, from a camera are used to determine whether a user is present at their device before a call is transferred to him or her. The video-assisted presence detection can be implemented based on a privacy setting. For example, one implementation allows a system to have partial access to the camera to perform a scan to detect that there is a human present without capturing facial information, and without identifying that person. Another implementation allows the system to have partial access to the camera to scan the a face of a user, but not have access to the video feed of the camera. Another implementation allows the system to have full access to the camera.

A virtual collaboration system provides communication between a plurality of participants via a collaboration session that includes a corresponding plurality of participant devices. The collaboration session facilitates communication between the participant devices via a plurality of communication channels over which the participants communicate. For example, in some embodiments, the channels include one or more of a video channel, audio channel, or document sharing channel. A participant designates in which of the plurality of channels they will participate, and the designations are communicated to other participants. This provides a broader understanding of each participant's circumstances and ability to engage across the different channels with the plurality of participants.