VPN dialed number NOA conversion

• US 20060147022A1
• Filed: 12/17/2004
• Published: 07/06/2006
• Est. Priority Date: 12/17/2004
• Status: Active Grant

• Current Assignee: Sbc Knowledge Ventures, L.P.
• Original Assignee: Sbc Knowledge Ventures, L.P.
• Inventors: Karnalkar, Anup D., Hendricks, Thomas Alan
• Granted Patent: US 7,672,443 B2
• Time in Patent Office: Days
• US Class Current: 379/221.80
• CPC Class Codes: H04M 7/009 in systems involving PBX or KTS networks
• CPC Class Codes: H04Q 2213/13097 Numbering, addressing
• CPC Class Codes: H04Q 2213/13102 Common translator
• CPC Class Codes: H04Q 2213/13345 Intelligent networks, SCP
• CPC Class Codes: H04Q 2213/13384 Inter-PBX traffic, PBX networks, e.g. corporate networks
• CPC Class Codes: H04Q 2213/13399 Virtual channel/circuits
• CPC Class Codes: H04Q 3/0029 Provisions for intelligent networking

Abstract

A method and system for handling identical VPN numbers assigned to multiple companies using a nature of address/number identifier initiated as public. The method includes receiving a query from a switch module to determine routing information for a call initiated by a calling party, the query including dialed digits with a nature of address identifier, and a calling party identifier updating the nature of address identifier associated with dialed digits to a private type code if a VPN coding identifier is determined present, looking up routing information associated with the dialed digits in a look-up table corresponding to the calling party identifier if the nature of address identifier includes the private type code, and transmitting the routing information to the switch module.

Claims

1. A method for routing VPN numbers, comprising:

receiving a query from a switch module to determine routing information for a call initiated by a calling party, the query including dialed digits with a nature of address identifier and a calling party identifier;

updating the nature of address identifier associated with dialed digits to a private type code if a VPN coding identifier is determined present;

looking up routing information associated with the dialed digits in a look-up table corresponding to the calling party identifier if the nature of address identifier includes the private type code; and

transmitting the routing information to the switch module.

2. The method of claim 1, wherein the VPN coding identifier is determined present when a length of the dialed digits equals a predetermined length and a portion of the dialed digits corresponds to the VPN coding identifier.

3. The method of claim 2, wherein the portion of the dialed digits is the leading three digits of the dialed digits and the VPN coding identifier is “

7”

“

0”

“

0”

.

4. The method of claim 1, wherein the calling party identifier is associated with a VPN business group associated with the calling party.

5. The method of claim 4, wherein the look-up table is a private number look-up table associated with the VPN business group.

6. The method of claim 1, wherein a voice over internet protocol device is used to initiate the call by the calling party.

7. A system for routing VPN numbers, comprising:

a receiving module for receiving a query from a switch module to determine routing information for a call initiated by a calling party, the query including dialed digits with a nature of address identifier and a calling party identifier;

an updating module for updating the nature of address identifier associated with dialed digits to a private type code if a VPN coding identifier is determined present;

a look-up module for looking up routing information associated with the dialed digits in a look-up table corresponding to the VPN group associated with calling party identifier if the nature of address identifier of dialed number includes the private type code; and

a transmitting module for transmitting the routing information to the switch module.

8. The system of claim 7, wherein the VPN coding identifier is determined present when a length of the dialed digits equals a predetermined length and a portion of the dialed digits corresponds to the VPN coding identifier.

9. The method of claim 8, wherein the portion of the dialed digits is the leading three digits of the dialed digits and the VPN coding identifier is “

7”

“

0”

“

0”

.

10. The system of claim 7, wherein the calling party identifier is associated with a VPN business group associated with the calling party.

11. The system of claim 10, wherein the look-up table is a private number look-up table associated with the VPN business group.

12. The system of claim 7, wherein a voice over internet protocol device is used to initiate the call by the calling party.

13. A computer program product, comprising:

a computer usable medium for receiving a query from a switch module to determine routing information for a call initiated by a calling party, the query including dialed digits with a nature of address identifier, and a calling party identifier; and

a set of computer program instructions embodied on the computer usable medium, including instructions to;

update the nature of address identifier to a private type code if a VPN coding identifier is determined present;

lookup routing information associated with the dialed digits in a look-up table corresponding to the calling party identifier if the nature of address identifier includes the private type code; and

transmit the routing information to the switch module.

14. A system for routing VPN numbers, comprising:

means for identifying a public VPN number;

means for changing the public VPN number to a private VPN number;

means for routing a call based on the private VPN number.