IP CARRIER PEERING WITH DNS RECURSION ZONE

• US 20190320069A1
• Filed: 06/24/2019
• Published: 10/17/2019
• Est. Priority Date: 06/30/2015
• Status: Active Grant

• Current Assignee: AT&T Intellectual Property I LP (AT&T, Inc.)
• Original Assignee: AT&T Intellectual Property I LP (AT&T, Inc.)
• Inventors: Ku, Bernard S., Naidu, Lakshminarashimhan, Forsyth, James W.
• Granted Patent: US 10,659,616 B2
• Time in Patent Office: Days
• CPC Class Codes: H04L 61/4511 using domain name system [DNS]
• CPC Class Codes: H04L 61/4557 Directories for hybrid networks, e.g. including telephone numbers
• CPC Class Codes: H04M 7/0075 Details of addressing, directories or routing tables

Abstract

Aspects of the subject disclosure may include, for example, a method and system to interconnect a first communications carrier to a second communications carrier by receiving a request to connect a communication from a first carrier to a second carrier; filtering the request to identify a specific name authority pointer (NPA-NXX) number from a plurality of specific name authority pointer (NPA-NXX) numbers; when the filter identifies the specific name authority pointer (NPA-NXX) number, modifying a private ENUM (tElephone NUmber Mapping) domain of the request to include an intercarrier ENUM apex based domain with a DNS (domain name server) recursion zone; retrieving a routing record using a domain name server (DNS) indicated by the intercarrier ENUM apex based domain; and routing the communication to the second carrier using the routing record. Other embodiments are disclosed.

Claims

1. A system to interconnect carrier communication systems, the system comprises:

a communication client, the communication client configured to;

receive a request, including an e.164 number, to connect an IP (Internet protocol) call from equipment of a first carrier to equipment of a second carrier;

modify a query to a private ENUM (tElephone NUmber Mapping) to include an intercarrier ENUM apex-based domain with an associated DNS (domain name server) recursion zone, wherein the associated DNS recursion zone includes at least a primary internet address of a tier 2 ENUM of the second carrier;

automatically forward the query that is modified to the equipment of the second carrier to retrieve a routing record from the second carrier; and

route the IP call to the equipment of the second carrier using the routing record.

2. The system of claim 1, wherein the query that is modified includes entries:

e164enum.net IN NS ns-thirdparty.net, ns-thirdparty.net IN A 10.10.10.1, and ns-thirdparty.net IN AAAA 2001;

1890;

FC;

12E6;

;

1;

2.

3. The system of claim 1, wherein the associated DNS recursion zone further includes at least a secondary internet address of the tier 2 ENUM of the second carrier.

4. The system of claim 1, wherein the automatically forwarding of the query that is modified to the equipment of the second carrier includes e164enum.net queries to at least one of:

a specific partner carrier or a specific higher tier ENUM.

5. The system of claim 1, wherein the automatically forwarding of the query that is modified to the equipment of the second carrier includes e164enum.net queries to the tier 2 ENUM.

6. The system of claim 1, wherein the request includes IP services comprising any of:

VoLTE (voice over long-term evolution), video calling, capability exchange or RCS (rich communication services) messaging.

7. The system of claim 1 further comprising an BGCF (Breakout Gateway Control Function) to perform the modifying of the query and the automatic forwarding of the query that is modified.

8. The system of claim 1, wherein the intercarrier ENUM apex-based domain comprises at least e164enum.net.

9. A method to interconnect a first communications carrier to a second communications carrier, the method comprising:

receiving a request to connect an IP (Internet protocol) communication from equipment of the first communications carrier to equipment of the second communications carrier;

querying, using a first query, a private ENUM (tElephone NUmber Mapping) of the first communications carrier;

modifying the first query to include an intercarrier ENUM apex-based domain with a DNS (domain name server) recursion zone, wherein the DNS recursion zone includes at least a primary internet address of a tier 2 ENUM of the second communications carrier;

automatically forwarding the query that is modified to the equipment of the second communications carrier to retrieve a routing record from the second communications carrier; and

routing the IP communication to the equipment of the second communications carrier using the routing record.

10. The method of claim 9, wherein the query that is modified includes entries:

e164enum.net IN NS ns-thirdparty.net, ns-thirdparty.net IN A 10.10.10.1, and ns-thirdparty.net IN AAAA 2001;

1890;

FC;

12E6;

;

1;

2.

11. The method of claim 9, wherein the DNS recursion zone further includes a secondary internet address of the tier 2 ENUM of the second communications carrier.

12. The method of claim 9, wherein the automatically forwarding of the query that is modified to the equipment of the second communications carrier includes e164enum.net queries to at least one of:

a specific partner carrier or a specific higher tier ENUM.

13. The method of claim 9, wherein the automatically forwarding of the query that is modified to the equipment of the second communications carrier includes e164enum.net queries to the tier 2 ENUM.

14. The method of claim 9 further comprising an BGCF (Breakout Gateway Control Function) to perform the modifying of the first query and the automatic forwarding of the first query that is modified.

15. The method of claim 9, wherein the intercarrier ENUM apex-based domain comprises at least e164enum.net.

16. A communication processing device comprises:

an interface;

a memory; and

a processing unit operably coupled to the interface and the memory, wherein the processing unit functions to;

receive a request to connect an IP (Internet protocol) communication from equipment of a first carrier to equipment of a second carrier;

query, using a first query, a private ENUM (tElephone NUmber Mapping) of the first carrier;

when the first query does not return a routing record to complete the request, create a second query with an intercarrier ENUM apex-based domain with a DNS (domain name server) recursion zone;

automatically forward the second query to the equipment of the second carrier to retrieve the routing record from the second carrier; and

route the IP communication to the equipment of the second carrier using the routing record.

17. The communication processing device of claim 16, wherein the private ENUM of the first carrier acts as a proxy agent.

18. The communication processing device of claim 16, wherein the second query includes entries:

e164enum.net IN NS ns-thirdparty.net, ns-thirdparty.net IN A 10.10.10.1, and ns-thirdparty.net IN AAAA 2001;

1890;

FC;

12E6;

;

1;

2.

19. The communication processing device of claim 16 further comprising an BGCF (Breakout Gateway Control Function) to perform the create a second query and perform the automatic forwarding of the modified first query.

20. The communication processing device of claim 16, wherein the intercarrier ENUM apex-based domain comprises at least e164enum.net.