Enabling IP carrier peering

Patent metadata

Field	Value
Publication number	US-10419993-B2
Application number	US-201715451048-A
Country	US
Kind code	B2
Filing date	Mar 6, 2017
Priority date	Mar 6, 2017
Publication date	Sep 17, 2019
Grant date	Sep 17, 2019

Abstract

Methods and systems may provide carrier ENUM based routing for subscriber devices (e.g., voice or other multimedia services over IP) to locate and to connect to subscriber devices of another IP peering carrier. A private ENUM database may be used to connect subscribers of disparate carriers using a domain for designated breakout gateway control functions.

First claim

What is claimed:

1. A network device comprising:
a processor; and
a memory coupled with the processor, the memory comprising executable instructions that when executed by the processor cause the processor to effectuate operations comprising:
receiving a query associated with a connection of a first device on a first carrier network of a voice over internet protocol (IP) connection with a second device on a second carrier network, wherein the query comprises tElephone NUmber Mapping (ENUM) query with an indication of a telephone number associated with the second device, wherein the second carrier network is not trusted by the first carrier network;
determining that the indication of the telephone number is not of the first carrier network; and
responsive to determining that the indication of the telephone number is not of the first carrier network, based on matching a number range, providing an arpa based fully qualified domain name (FQDN) to an external routing function to route the call to a destination network.

2. The network device of claim 1 , wherein the external routing function comprises a breakout gateway control function (BGCF).

3. The network device of claim 1 , wherein the indication of the telephone number comprises an E.164 number.

4. The network device of claim 1 , wherein the network device comprises a private ENUM database.

5. The network device of claim 1 , wherein the FQDN is an entry in a private domain name system (DNS) server.

6. A network device comprising:
a processor; and
a memory coupled with the processor, the memory comprising executable instructions that when executed by the processor cause the processor to effectuate operations comprising:
detecting an initiation by a first device on a first carrier network of a voice over internet protocol (IP) connection with a second device on a second carrier network, wherein the second carrier network is not trusted by the first carrier network;
sending a query for a connection information to a private tElephone NUmber Mapping (ENUM) database, wherein the query comprises an indication of a telephone number; and
responsive to the query, receiving an arpa based first fully qualified domain name (FQDN),
wherein the first FQDN indicates the indication of the telephone number is not of the first carrier network, and
wherein the first FQDN indicates an external routing function for routing the indication of a telephone number based on the number range.

7. The network device of claim 6 , wherein the external routing function comprises a breakout gateway control function (BGCF).

8. The network device of claim 6 , wherein the network device comprises a serving call session control function.

9. The network device of claim 6 , wherein the number range comprises a plurality of numbers associated with numbering plan area (NPA) or country code.

10. The network device of claim 6 , wherein the first FQDN is an entry in a private domain name system (DNS) server.

11. The network device of claim 6 , the operations further comprising sending a domain name query to a private domain name system (DNS) server to resolve the first FQDN.

12. The network device of claim 6 , the operations further comprising:
sending a domain name query to a private domain name system (DNS) server to resolve the first FQDN; and
receiving an internet protocol address of the first FQDN.

13. The network device of claim 6 , the operations further comprising:
sending a domain name query to a private domain name system (DNS) server to resolve the first FQDN;
receiving an internet protocol address of the first FQDN; and
based on the internet protocol address, routing the voice over IP connection to the BGCF.

14. A method comprising:
detecting, by a network device, an initiation by a first device on a first carrier network of a voice over internet protocol (IP) connection with a second device on a second carrier network, wherein the second carrier network is not trusted by the first carrier network;
sending a query, by the network device, for a connection information to a private tElephone NUmber Mapping (ENUM) database, wherein the query comprises an indication of a telephone number; and
responsive to the query receiving, by the network device, a first fully qualified domain name (FQDN);
mapping, by the network device, the first FQDN to a second FQDN,
wherein the first FQDN indicates the indication of the telephone number is not of the first carrier network, and
wherein the second FQDN indicates an external routing function for routing the indication of a telephone number based on the number range, wherein the number range indicates a plurality of telephone numbers between a first telephone number and a second telephone number.

15. The method of claim 14 , further comprising:
sending a domain name query to a private domain name system (DNS) server to resolve the second FQDN;
receiving an internet protocol address of the second FQDN; and
based on the internet protocol address, routing the voice over IP connection to the BGCF.

16. The method of claim 14 , wherein the external routing function comprises a breakout gateway control function (BGCF).

17. The method of claim 14 , wherein the network device comprises a serving call session control function.

18. The method of claim 14 , wherein the indication of the telephone number comprises an E.164 number.

19. The method of claim 14 , wherein the network device comprises a serving call session control function.

20. The method of claim 14 , wherein the second FQDN is an entry in a private domain name system (DNS) server.

Assignees

• At & T Ip I Lp

Inventors

• Ku Bernard S
• Jurczak Andrew
• Naidu Lakshminarashimhan

Classifications

• H04L63/08

  for authentication of entities (cryptographic mechanisms or cryptographic arrangements for entity authentication H04L9/32) · CPC title

• H04L47/785

  among multiple network domains, e.g. multilateral agreements · CPC title

• H04W36/14 Primary

  Reselecting a network or an air interface · CPC title

• H04L61/157

  Electricity · mapped topic

• H04L61/1511

  Electricity · mapped topic