Method for creating a numbering plan-independent directory structure for telecommunications applications

• US 6,122,258 A
• Filed: 08/29/1997
• Issued: 09/19/2000
• Est. Priority Date: 08/29/1997
• Status: Expired due to Term

• Current Assignee: RPX Clearinghouse LLC (RPX Corporation)
• Original Assignee: Nortel Networks Corporation
• Inventors: Brown, Anne R.
• Primary Examiner(s): Horabik, Michael
• Assistant Examiner(s): JONES, PRENELL P
• Application Number:
  US08/921,013
• Time in Patent Office: 1,117 Days
• Field of Search: 370/256, 379/200, 379/94, 379/207, 379/220, 379/221, 364/252, 364/222, 707/200, 707/10
• US Class Current: 370/256
• CPC Class Codes: H04L 61/00 Network arrangements, protocols or services for addressing or naming
• CPC Class Codes: H04L 61/45 Network directories; Name-to-address mapping
• CPC Class Codes: H04Q 2213/1305 Software aspects
• CPC Class Codes: H04Q 2213/13097 Numbering, addressing
• CPC Class Codes: H04Q 2213/13345 Intelligent networks, SCP
• CPC Class Codes: H04Q 2213/13377 Recorded announcement
• CPC Class Codes: H04Q 2213/13389 LAN, internet
• CPC Class Codes: H04Q 3/005 Personal communication services, e.g. provisions for portability of subscriber numbers

Abstract

A numbering plan-independent directory structure for telecommunications applications is described. Common directory services permit users to easily and transparently use telecommunications services such as sending multimedia messages to recipients on different multimedia messaging systems, using the recipients preferred supported capabilities. For example, sending messages may be difficult if the sender does not have an address or other profile information of the recipient. A sub-tree structure which is numbering plan-independent provides a mechanism to eliminate global searching for telecommunications information. A sub-tree is defined in the directory, the sub-tree having a structure in which each alphanumeric character of the unique identifier comprises a separate node in the sub-tree. The advantage is the enablement of information location where information can be retrieved without a search given a known unique identifier such as a telephone number.

Claims

1. A method for structuring a directory to provide a telecommunications service with numbering plan-independent access without search to a directory entry using a unique identifier comprising an alphanumeric sequence associated with the entry, comprising the steps of:

defining a sub-tree in the directory, the sub-tree having a structure in which each character of the unique identifier comprises a separate node in the sub-tree; and

each leaf node in the sub-tree stores information about an object that is useful for providing the telecommunications service or said leaf node is assigned an alias which points to information about the object stored somewhere else in a database which stores the entry or points to a different database.

2. A method for structuring a directory to provide a telecommunications service with number plan-independent access without search to a directory entry as claimed in claim 1 wherein the directory is a hierarchically structured directory.

3. A method for structuring a directory to provide a telecommunications service with number plan-independent access without search to a directory entry as claimed in claim 1 wherein the unique identifier is a telephone number.

4. A method for structuring a directory to provide a telecommunications service with number plan-independent access without search to an entry in the directory as claimed in claim 1 wherein the alphanumeric sequence is a calling card number.

5. A method for structuring a directory to provide a telecommunications service with number plan-independent access without search to an entry in the directory as claimed in claim 1 wherein the alphanumeric sequence is a number for life number.

6. A method for structuring a directory to provide a telecommunications service with number plan-independent access without search to an entry in the directory as claimed in claim 3 wherein the alphanumeric sequence is a globally portable telephone number.

7. A method for structuring a directory to provide a telecommunications service with number plan-independent access without search to an entry in the directory as claimed in claim 1 wherein the telecommunications service is a voice messaging service.

8. A method for structuring a directory to provide a telecommunications service with number plan-independent access without search to an entry in the directory as claimed in claim 1 wherein the telecommunications service is an Internet-based service.

9. A method for structuring a directory to provide a telecommunications service with number plan-independent access without search to an entry in the directory as claimed in claim 1 wherein the telecommunications service is a directory assistance service.

10. A method for structuring a directory to provide a telecommunications service with number plan-independent access without search to an entry in the directory as claimed in claim 7 wherein the information about the object that is useful to the telecommunications service is the electronic mail address of the object.

11. A method for structuring a directory to provide numbering plan-independent access without search to a directory entry using a unique identifier associated with the entry, comprising the steps of:

defining a first sub-tree in the directory having a structure in which each character of the unique identifier comprises a separate node in the sub-tree;

defining a second sub-tree in the directory having a structure that resembles a structure of a numbering plan of the unique identifier for an object with which the directory entry is associated; and

assigning one or more aliases to each leaf node in the first sub-tree to point to corresponding leaf nodes in the second sub-tree, to permit access to the entry without search using either the first or second sub-tree.

12. The method for structuring a directory to provide numbering plan-independent access without search to a directory entry using a unique identifier associated with the entry as claimed in claim 11 wherein the leaf nodes with the second sub-tree store information about the object that is useful to the telecommunications service or is assigned an alias which points to information about the object stored somewhere else in a database which stores the entry or to a different database.

13. A method for structuring a directory to provide a telecommunications service with number plan-independent access without search to a directory entry as claimed in claim 11 wherein the directory is a hierarchically structured directory.

14. A method for structuring a directory to provide a telecommunications service with number plan-independent access without search to a directory entry as claimed in claim 11 wherein the unique identifier is a telephone number.

15. A method for structuring a directory to provide a telecommunications service with number plan-independent access without search to an entry in the directory as claimed in claim 11 wherein the alphanumeric sequence is a calling card number.

16. A method for structuring a directory to provide a telecommunications service with number plan-independent access without search to an entry in the directory as claimed in claim 11 wherein the alphanumeric sequence is a number for life number.

17. A method for structuring a directory to provide a telecommunications service with number plan-independent access without search to an entry in the directory as claimed in claim 14 wherein the alphanumeric sequence is a globally portable telephone number.

18. A method for structuring a directory to provide a telecommunications service with number plan-independent access without search to an entry in the directory as claimed in claim 11 wherein the telecommunications service is a voice messaging service.

19. A method for structuring a directory to provide a telecommunications service with number plan-independent access without search to an entry in the directory as claimed in claim 11 wherein the telecommunications service is a Internet-based service.

20. A method for structuring a directory to provide a telecommunications service with number plan-independent access without search to an entry in the directory as claimed in claim 11 wherein the telecommunications service is a telephone directory assistance service.

21. A method for structuring a directory to provide a telecommunications service with number plan-independent access without search to an entry in the directory as claimed in claim 16 wherein the information about the object that is useful to the telecommunications service is the electronic mail address of the object.