Method and apparatus for effecting a voice communication between user terminals connected via a communication network include displaying a menu of country options to a user and receiving a number in local form. Formatting rules are recalled for a destination country selected by the user from the country options. A country prefix for the destination country is prepended to the number in accordance with the formatting rules to generate a formatted number. The formatted number is supplied to a client installed at the user terminal for effecting the voice communication using the formatted number.

Apparatuses of user equipment (UEs) for end-to-end coordination of voice over cellular data network communications. An apparatus of a UE includes one or more data storage devices and one or more processors. The one or more data storage devices are configured to store delay budget information pertaining to end-to-end delivery of a real-time transport protocol (RTP) stream sent from a remote UE to the UE. The one or more processors are configured to generate an application layer message including the delay budget information, the application layer message to be transmitted to the remote UE to enable the remote UE to request, from a cellular base station servicing the remote UE, additional air interface delay based on the delay budget information.

A system and method in various embodiments implements a virtual spectrum band stacking technique facilitating spectrum sharing by converting and combining spectrum bands consisting of several different RF channels, common air interfaces, and radio channel protocols in the radio frequency channel domain to form IP Virtual Radio Channels (IP-VRCs) in the packet data domain. This virtual spectrum stacking technique combines the transmissions of contiguous and non-contiguous RF channels with differing physical layers into IP-VRCs. This technique enables simultaneous parallel high-speed wireless transmission; virtual radio channel hopping for enhanced security; and customized security schemes for different IP-VRC Groups. The deployment of the combination of IP-VRC Groups; Universal Small Cell Base Stations; and Universal Wireless End-Point Devices allows the aggregation of all available spectrum bands for use within a building environment. Some benefits of this deployment include expansion of spectrum utilization, service quality, security, applications and transmission throughput for wireless end-point devices.

A node device configuring a peer-to-peer network includes a network interface and a blockchain management part. The blockchain management part receives, via the network interface, an information registration request transaction that includes information including a telephone number of a user terminal and subscribing carrier information, an electronic signature made on the information with a private key of the user terminal, and a public key paired with the private key. The blockchain management part accumulates the received information registration request transaction into a blockchain based on a consensus building algorithm executed in cooperation with another node device configuring the peer-to-peer network.

In one embodiment, a system provides for end-user control over the automatic recognition of communication situations by detection of unique telecommunication event characteristics and the consequential responses to those situations by invocation of related programmatic responses. The system allows an end user to specify various patterns of telecommunication event characteristics that describe various situational aspects of incoming communications, such as the timing and originator of voice calls, the content of, timing of, and author of chat messages, etc., as well as appropriate sets of programmatic response actions to be performed in response to those communications, such as initiating conference calls, sending chat messages, routing calls to other users, etc. The system monitors incoming communications, matches characteristic patterns to recognize the situations, and then invokes the matching response actions, thereby automating many functions of the communication system that previously would have had to be performed manually.

A system may include one or more of a called device, a calling device, configured to call the called device, and a network module. The network module is configured to process incoming call information of a call placed to the called device and configured to route the call to a destination based on preferences of the called device.

Aspects of the subject disclosure may include, for example, responsive to determining that a second device is associated with a first carrier network, obtaining a first record associated with a called number of the second device from a first carrier network telephone number mapping equipment server of the first carrier network, and transmitting a first internet protocol address for the second device from the first record to a terminating call session control function server of the first carrier network to initiate the internet protocol call session. Responsive to a second determination that the second device is associated with a second carrier network, obtaining a second record associated with the called number according to a pointer to a second carrier network telephone number mapping equipment server of the second carrier network, and transmitting a second internet protocol address for the second device derived from the second record to a session border controller of the first carrier network to initiate the internet protocol call session. Other embodiments are disclosed.

A system and method in various embodiments implements a virtual spectrum band stacking technique facilitating spectrum sharing by converting and combining spectrum bands consisting of several different RF channels, common air interfaces, and radio channel protocols in the radio frequency channel domain to form IP Virtual Radio Channels (IP-VRCs) in the packet data domain. This virtual spectrum stacking technique combines the transmissions of contiguous and non-contiguous RF channels with differing physical layers into IP-VRCs. This technique enables simultaneous parallel high-speed wireless transmission; virtual radio channel hopping for enhanced security; and customized security schemes for different IP-VRC Groups. The deployment of the combination of IP-VRC Groups; Universal Small Cell Base Stations; and Universal Wireless End-Point Devices allows the aggregation of all available spectrum bands for use within a building environment. Some benefits of this deployment include expansion of spectrum utilization, service quality, security, applications and transmission throughput for wireless end-point devices.

An electronic device which displays and updates Mobile Network Operator (MNO) information includes a memory, a display, a communicator, a user inputter, and a processor. The processor is configured to control the display to display a contact list including telephone number information of a plurality of external devices and Mobile Network Operator (MNO) information of the plurality of external devices, and in response to a user command for selecting one of the plurality of external devices included in the contact list being input, establish a communication connection with the selected external device. The processor is further configured to control the communicator to receive information regarding the MNO information of the external device from the selected external device; and update the contact list based on the MNO information of the external device and store the updated contact list in the memory.

A method of selecting an improved and/or optimal network path for media transmission in a voice over Internet protocol (VoIP) includes generating a media channel candidate capable of performing a media transmission between users in a VoIP; setting one of the media channel candidates as a temporary media channel and estimating a network performance; and changing the temporary media channel with a current media channel based on a result of estimating the network performance. The estimating and the changing is sequentially iterated with respect to each of media channels corresponding to the media channel candidates.