Method and system for decoding tokenized Session Initiated Protocol packets

• US 7,630,319 B1
• Filed: 06/30/2004
• Issued: 12/08/2009
• Est. Priority Date: 06/30/2004
• Status: Expired due to Fees

• Current Assignee: T-Mobile Innovations LLC (Deutsche Telekom AG)
• Original Assignee: Sprint Communications Company LP (Deutsche Telekom AG)
• Inventors: Studtmann, Joel Mark
• Primary Examiner(s): Vu; Huy D.
• Assistant Examiner(s): RENNER, BRANDON M
• Application Number:
  US10/881,984
• Time in Patent Office: 1,987 Days
• Field of Search: 370/352, 370/389, 370/401, 370/328, 709/217, 709/218, 709/229, 709/230
• US Class Current: 370/250
• CPC Class Codes: H04L 65/1104 Session initiation protocol [SIP]
• CPC Class Codes: H04L 65/80 Responding to QoS

Abstract

The present invention relates to a method of decoding tokenized Session Initiated Protocol. A token from a tokenized Session Initiated Protocol packet is received. A decoding table is accessed and the corresponding entry for the token is determined. The token is executed according to the corresponding entry. This may be done for all tokens in a tokenized Session Initiated Packet. Once the tokens have been executed according to their entries in a decoding table, the decoded tokenized Session Initiated Protocol packet is provided.

Claims

1. A method of decoding tokenized Session Initiated Protocol, the method comprising:

collecting, at a server, a plurality of tokenized Session Initiated Protocol packets from calls that are not successfully completed;

receiving, at the server, a first tokenized Session Initiated Protocol packet from the plurality of tokenized Session Initiated Protocol packets;

extracting, at the server, a string table from a user datagram payload in the first tokenized Session Initiated Protocol packet;

decoding, at the server, the string table from the user datagram payload;

creating, at the server, an index for the string table, wherein the index includes an IP address for a server that generated the first tokenized Session Initiated Protocol packet;

storing, at the server, the index for the string table;

accessing, at the server, a decoding table;

determining, at the server, a corresponding entry in the decoding table for each token in the first tokenized Session Initiated Protocol packet;

executing, at the server, the corresponding entry for the each token to decode the first tokenized Session Initiated Protocol packet; and

displaying, through a user interface communicatively coupled to the server, the decoded first tokenized Session Initiated Protocol packet on a display device as a Session Initiated Protocol message, thereby allowing an evaluation of the Session Initiated Protocol message to determine what caused a call to not be successfully completed.

2. The method of claim 1, wherein executing the corresponding entry decodes the each token into Session Initiated Protocol element.

3. The method of claim 1, wherein said each token is a textual element representing a Session Initiated Protocol element.

4. The method of claim 1, further comprising:

receiving, at the server, a user datagram payload.

5. The method of claim 4, further comprising:

determining, at the server, whether the user datagram payload is tokenized Session Initiated Protocol.

6. The method of claim 1, further comprising:

storing, at the server, the index for the string table.

7. The method of claim 1, wherein the corresponding entry for the each token to decode is a subroutine.

8. The method of claim 7, wherein the subroutine includes one of receiving a next token, accessing a token dictionary, accessing a string table or combinations thereof.

9. A method for providing decoded tokenized Session Initiated Protocol packets for review, the method comprising:

collecting, at a server, a plurality of tokenized Session Initiated Protocol packets from calls that are not successfully completed;

receiving, at the server, a request for a first tokenized Session Initiated Protocol packet from the plurality of tokenized Session Initiated Protocol packets to be decoded;

receiving, at the server, a first token from the first tokenized Session Initiated Protocol packet;

extracting, at the server, a string table from a user datagram payload in the first tokenized Session Initiated Protocol packet;

decoding, at the server, the string table from the user datagram payload;

creating, at the server, an index for the string table, wherein the index includes attribute values describing a server that generated the first tokenized Session Initiated Protocol packet;

storing, at the server, the index for the string table;

accessing, at the server, a decoding table;

determining, at the server, a corresponding entry in the decoding table for the first token;

executing, at the server, the corresponding entry to decode the first token; and

displaying, through a user interface communicatively coupled to the server, the decoded tokenized Session Initiated Protocol packet, thereby allowing an evaluation of the Session Initiated Protocol message to determine what caused a call to not be successfully completed.

10. The method of claim 9, further comprising:

receiving, at the server, a second token from the tokenized Session Initiated Protocol packet;

accessing, at the server, the decoding table;

determining, at the server, the corresponding entry in the decoding table for the second token; and

executing, at the server, the corresponding entry to decode the second token.