Methods and systems for implementing a real-time, distributed, hierarchical database using a proxiable protocol

• US 7,274,783 B2
• Filed: 05/14/2002
• Issued: 09/25/2007
• Est. Priority Date: 02/15/2000
• Status: Expired due to Term

• Current Assignee: Genband US LLC (Ribbon Communications, Inc.)
• Original Assignee: Nortel Networks Limited (Nortel Networks Corporation)
• Inventors: Yoakum, John H., Reaves, James E., Alluisi, Paul D.
• Primary Examiner(s): DEANE JR, WILLIAM J
• Application Number:
  US10/145,335
• Publication Number:
  US 20020194183A1
• Time in Patent Office: 1,960 Days
• Field of Search: 379/219, 379/230, 379/93.01, 379/90.01, 379/93.09, 379/100.15, 379/201.01
• US Class Current: 379/219
• CPC Class Codes: H04L 61/4557 Directories for hybrid networks, e.g. including telephone numbers
• CPC Class Codes: H04L 65/103 in the network
• CPC Class Codes: H04L 65/104 in the network
• CPC Class Codes: H04L 65/1101 Session protocols
• CPC Class Codes: H04L 65/1104 Session initiation protocol [SIP]
• CPC Class Codes: H04L 67/2885 Hierarchically arranged intermediate devices, e.g. for hierarchical caching
• CPC Class Codes: H04L 67/56 Provisioning of proxy services store-and-forward switching systems in data switching networks H04L12/54
• CPC Class Codes: H04L 67/563 Data redirection of data network streams
• CPC Class Codes: H04L 67/568 Storing data temporarily at an intermediate stage, e.g. caching
• CPC Class Codes: H04L 69/329 in the application layer [OSI layer 7]
• CPC Class Codes: H04M 7/006 Networks other than PSTN/ISDN providing telephone service, e.g. Voice over Internet Protocol (VoIP) , including next generation networks with a packet-switched transport layer H04L65/00 takes precedence; aspects not specific to the type of network H04M3/00; special services in those networks H04M3/42
• CPC Class Codes: H04Q 3/0029 Provisions for intelligent networking

Abstract

A system for implementing a real-time distributed, hierarchical database uses a proxiable protocol. The system includes a first proxy server for receiving a first proxiable protocol message from a first network element. The first proxy server performs a first database lookup based on information contained in the first message. If the first proxy server does not obtain the requested information, the first proxy server formulates a second proxiable protocol message and forwards the message to a second proxy server. A second proxy server receives the second message and performs a second database lookup based on information contained in the second message. The second proxy server sends the results from the second database lookup to the first proxy server and the first proxy server forwards the results to the database user.

Claims

1. A method for implementing a real-time, distributed, hierarchical database, the method comprising:

(a) receiving by a first proxy server a first proxiable protocol message from a database user;

(b) starting a timer;

(c) attempting to obtain information requested by the first message; and

(d) in response to determining that the timer has expired, sending a response to the database user, the response containing information obtained prior to expiration of the timer.

2. The method of claim 1 wherein attempting to obtain the information requested by the first message includes performing a lookup in a first database accessible by the first proxy server and obtaining a first portion of the information requested, formulating a second proxiable protocol message, and sending the second message to a second proxy server to obtain a second portion of the information requested.

3. The method of claim 1 wherein, when the timer expires after obtaining the first portion of the information and prior to obtaining the second portion requested, sending a reply containing the first portion of the information requested to the database user.

4. The method of claim 2 wherein formulating the second message includes formulating a session initiation protocol (SIP) message.

5. The method of claim 4 wherein formulating a SIP message includes formulating a SIP INVITE message.

6. The method of claim 2 wherein receiving the first message includes receiving a first message including first response routing information specifying a return path for responses to the first message and formulating the second message includes including second response routing information specifying a return path for responses to the second message.

7. The method of claim 6 wherein the first response routing information includes an address for a sender of the first message and the second response routing information includes an address for the first proxy server.