IP carrier peering
AssigneeAT&T Intellectual Property I, L.P.
InventorsBernard S. Ku, Lakshminarashimhan Naidu, James W. Forsyth
Life of this patent
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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; modifying a private ENUM (tElephone NUmber Mapping) domain of the request to include an intercarrier ENUM apex based domain; 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.
Claims18
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 a first carrier to a second carrier;
- modify a query to a private ENUM (tElephone NUmber Mapping) to include an intercarrier ENUM apex based domain;
- forward the modified query to the second carrier to retrieve a routing record from the second carrier, wherein the forwarding of the modified query includes an upchain to a tier 1 ENUM or tier 2 ENUM of the second carrier;
- and
- route the IP call to the second carrier using the routing record.
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 a first communications carrier to a second communications carrier;
- querying, using a first query, a private ENUM (tElephone NUmber Mapping) of the first communications carrier;
- when the first query does not return a routing record to complete the request, creating a second query by modifying a domain of the first query to include an intercarrier ENUM apex based domain, wherein the intercarrier ENUM apex based domain includes one of:
- a specific second carrier private ENUM domain or an intercarrier domain;
- querying, using the second query, the private ENUM of the first communications carrier to retrieve an IP address of a higher tiered ENUM of the second communications carrier;
- retrieving a routing record from the higher tier ENUM;
- and
- routing the call to the second communications carrier using the routing record.
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 a first carrier to a second carrier;
- querying, using a first query, a private ENUM tElephone NUmber (Mapping) of the first communications carrier;
- when the first query does not return a routing record to complete the request, creating a second query by modifying a domain of the first query to include an intercarrier ENUM apex based domain;
- querying, using the second query, the private ENUM of the first communications carrier to retrieve an IP address of a higher tier ENUM of the second communications carrier;
- forwarding the second query to the IP address of the higher tier ENUM of the second communications carrier;
- retrieving a routing record from the higher tier ENUM of the second communications carrier;
- and
- routing the call to the second carrier using the routing record.
Dependencies are inferred from the claim text.