A computer-implemented method for managing calls in a collaboration environment is provided. The method includes receiving, by a processor, a call into a collaboration session of the collaboration environment. The method also includes identifying, by the processor, a user from a plurality of users associated with the collaboration session, based on at least one of contextual information regarding the call and information regarding the plurality of users. The method further includes providing, by the processor, an interface on a device associated with the identified user, wherein the interface enables the identified user to instruct the device to handle the call within the collaboration session.

Systems and methods for automatically authenticating an incoming call are disclosed. In one implementation a method for automatically authenticating an incoming call includes receiving a call from a calling device. The call includes an identifier associated with the calling device. The method further includes receiving, separately from the call, authentication data associated with a device or a user, determining, using the identifier and the authentication data, that the authentication data is associated with the same calling device that initiated the call, verifying the authentication data, and based on a result of the verification, determining that the call is initiated by an authenticated device or user.

A communications method includes receiving, by user equipment (UE), a first message from a network side, where the first message is used to indicate to the UE to perform circuit switched fallback (CSFB) as a called party, where the first message includes first information, and where the first information is used to indicate an incoming call number. If it is determined that a preset condition is met, the communications method further includes sending a second message to the network side, where the second message is used to indicate that the CSFB is rejected, and where the preset condition includes at least one of the incoming call number is restricted or the UE is in a mode of automatically rejecting a CSFB incoming call.

A mobile communications system includes switching between communication paths based on the quality of service. A VoIP service is coupled to a mobile network and a wireless local-area network (WLAN) via a wide-area IP network. A plurality of mobile communications devices are associated with VoIP telephone numbers. A public switched telephone network (PSTN) is coupled to the plurality of mobile communications devices and coupled to the VoIP service. A quality of service server is coupled to the plurality of mobile communications devices via the wide-area IP network for determining the quality of data channels to a mobile communications device via the mobile network and to the mobile communications device via the WLAN. A voice call is carried over one of the mobile network, the WLAN, and the PSTN depending on the quality of the data channels.

Measures are provided for use in establishing a telephony session between first and second telephony devices in a telephony network. Telephony network equipment in the telephony network receives, from the first telephony device over a signalling link, a telephony session establishment request. The telephony network equipment receives, from the first telephony device over a data link that is separate to the signalling link, a message comprising data useable by the telephony network equipment to identify the second telephony device. The telephony network equipment correlates the received telephony session establishment request and the received message. The telephony network equipment transmits, to the second telephony device, a telephony session establishment request on the basis of the correlating. The first telephony device is associated with a multi-persona user having a first persona associated with a first telephony identifier and a second persona associated with a second telephony identifier.

A User Equipment (UE) including a controller configured to perform, in a case of failure of a connection attempt for a first emergency call that uses a Packet Switched (PS) domain, a connection attempt for a second emergency call that uses the PS domain, a transmission and/or reception unit configured to receive a service reject message due to the failure of the connection attempt for the first emergency call, wherein the UE uses a first access network for the connection attempt for the first emergency call, and the UE uses a second access network for the connection attempt for the second emergency call. Accordingly, a user equipment, a core network apparatus, a control method to be performed by an IMS apparatus, and the like are provided for the user equipment to connect to a network suitable for an emergency call service in 5th generation (5G) mobile communication system, which is a next-generation mobile communication system.

Disclosed is a work process supporting system based on interactive voice and text communication, and more particularly a work process supporting system based on interactive voice and text communication, in which at least one of a voice and a text is selectively applied according to congenital/acquired conditions of an information or service requester, so that a work process for providing information or service can be carried out, thereby freeing from constraints in input/output means for performing the work process for providing the information or the service and carrying out the work process while keeping continuity, reliability and accuracy.

According to some embodiments, a method performed by a software defined wide area network (SD-WAN) controller communicably coupled to a voice gateway comprises determining a user profile from one or more stored user profiles is to be associated with an analog telephone and transmitting the user profile to the voice gateway. In particular embodiments, the SD-WAN controller may receive a request to associate the analog telephone with a user from the voice gateway.

A method, an apparatus and a system for a handover to a circuit switched domain are disclosed. In an embodiment, a system includes a mobility management entity (MME) and at least two a mobile switching center (MSCs), wherein the at least two MSCs comprise a first MSC capable of supporting a circuit switched fallback (CSFB) and a single radio voice call continuity (SRVCC) and a second MSC not capable of supporting the SRVCC, and wherein the MME is configured to select the first MSC for a user equipment (UE) from the at least two MSCs in a combined tracking area update procedure of the UE when a location service of a circuit switched (CS) domain triggers an SRVCC procedure for the UE and when the UE has a Voice over Internet Protocol (VOIP) service in progress.

A method of signaling a reason for a downgrade of an enhanced call to an audio-only call. User equipment (UE) can engage, via a telecommunication network, in an enhanced call including audio content and additional content. The UE can generate a downgrade message that requests a downgrade of the enhanced call to an audio-only call that includes the audio content without the additional content. The downgrade message can include a downgrade reason indicator identifying whether the UE is automatically downgrading the enhanced call or whether the UE is instead downgrading the enhanced call due to user instructions. The UE can send the downgrade message to the telecommunication network.