A determination is made whether to handle a request associated with a specific number range by a physical telephone number mapping service instance provisioned for handling the request for the specific number range or a virtual telephone number mapping service instance provisioned for handling the request for the specific number range. If it is determined that the request should be handled by the physical telephone number mapping service instance, forwarding of the request from the physical telephone number mapping service instance to the virtual telephone number mapping service instance is prevented. If it is determined that the request should be handled by the virtual telephone number mapping service instance, forwarding of the request from the virtual telephone number mapping service instance to the physical telephone number mapping service instance is prevented.

Answering machine detection (AMD) processes in a contact center is used to derive and store AMD meta-data about a known greeting from an automatic voice messaging capability (AVMC) on a telephone call to a known number. The AMD meta-data is used in subsequent calls to that known number wherein the greeting detected is analyzed using the AMD meta-data to make a comparison if the current greeting is the same of that previously encountered. If the current greeting is the same as previously encountered, this suggests the number has not been reassigned. If different, this suggests the number was reassigned. If the distinction is not clear, then the agent may perform a manual comparison of the audio speech and/or a transaction of the greeting. If the number is reassigned, then a number validation for the intended individual can be performed to verify whether the number was reassigned.

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.

A method is disclosed for recording a port of a telephone number from a first network operator to a second network operator, the method comprising receiving details of the port of the telephone number from the first network operator to the second network operator, including data identifying the port of the telephone number in a record data block, wherein the record data block includes a representation of contents of a previous record data block, and distributing the record data block to the first network operator and/or the second network operator.

A relay server 31 includes: a detection unit 31A that detects a failure of a subscriber server 21; and a relay unit 31B that relays call connection requests 51, 52, and 53 to another network in which corresponding subscribers may possibly be accommodated according to connection attempt network information indicating networks to attempt a call connection, when a failure of the subscriber server 21 is detected by the detection unit 31A.

A determination is made whether to handle a request associated with a specific number range by a physical telephone number mapping service instance provisioned for handling the request for the specific number range or a virtual telephone number mapping service instance provisioned for handling the request for the specific number range. If it is determined that the request should be handled by the physical telephone number mapping service instance, forwarding of the request from the physical telephone number mapping service instance to the virtual telephone number mapping service instance is prevented. If it is determined that the request should be handled by the virtual telephone number mapping service instance, forwarding of the request from the virtual telephone number mapping service instance to the physical telephone number mapping service instance is prevented.

A method, a device and a storage medium for processing a communication service in a circuit switch domain are provided. The method may include: judging, when a communication service being currently processed by a communication terminal is a voice call service or a short message service in a circuit switch domain, whether a switching condition for switching the communication service onto a real-time communication tool in a packet switch domain of the communication terminal is met; if it is met, switching the communication service onto the real-time communication tool in the packet switch domain of the communication terminal.

A determination is made whether to handle a request associated with a specific number range by a physical telephone number mapping service instance provisioned for handling the request for the specific number range or a virtual telephone number mapping service instance provisioned for handling the request for the specific number range. If it is determined that the request should be handled by the physical telephone number mapping service instance, forwarding of the request from the physical telephone number mapping service instance to the virtual telephone number mapping service instance is prevented. If it is determined that the request should be handled by the virtual telephone number mapping service instance, forwarding of the request from the virtual telephone number mapping service instance to the physical telephone number mapping service instance is prevented.

Systems and methods for individual telephone numbering assignment and administration in a telecommunications network are disclosed. Particularly, the invention relates to the concept of acquiring individual telephone numbers instead of acquiring a block of telephone numbers from an administration agency. According to disclosed embodiments, the system and method allow a carrier to request an individual telephone number from a numbering administrator. The numbering administrator verifies that the carrier is authorized to request an individual telephone in a particular geographic area. If the carrier is authorized, the numbering administrator obtains an individual telephone number from its database and provides it to the carrier. The carrier initiates an intra-carrier assignment with an administrative agency to get the individual telephone number assigned to it. The administrative agency processes the assignment activation request, and upon completion of the addignment process, notifies all carriers that the individual telephone number is assigned to the requesting carrier.

A method for routing a call associated with a private dialing plan includes receiving a call directed to a destination endpoint associated with a private dialing plan (PDP), receiving an internal egress path identifier associated with the destination endpoint, and routing the call to an egress path identified by the egress path identifier. A system for routing a call including a destination number associated with a PDP including a routing engine operable to route the call to a PDP call resolution server, and a first switch operable to receive an egress path identifier and a PDP telephone number from the PDP call resolution server, the egress path identifier identifying an egress path for routing the call to a destination endpoint associated with the destination number, and the PDP telephone number identifying a selected PDP destination endpoint and a second switch operable to receive the call based on the egress path identifier and route the call to the selected PDP destination endpoint using the PDP telephone number.