SESSION INFORMATION TRANSPARENCY CONTROL

• US 20130205033A1
• Filed: 02/02/2012
• Published: 08/08/2013
• Est. Priority Date: 02/02/2012
• Status: Active Grant

• Current Assignee: Dialogic, Inc. (Enghouse Systems Limited)
• Original Assignee: Dialogic, Inc. (Enghouse Systems Limited)
• Inventors: Peter, Henry Thomas
• Granted Patent: US 8,825,879 B2
• Time in Patent Office: Days
• US Class Current: 709/228
• CPC Class Codes: H04L 65/1045 Proxies, e.g. for session initiation protocol [SIP]
• CPC Class Codes: H04L 65/1046 Call controllers; Call servers
• CPC Class Codes: H04L 65/1053 IP private branch exchange [PBX] functionality entities or arrangements circuit switched PBXs H04M3/00
• CPC Class Codes: H04L 65/1069 Session establishment or de-establishment
• CPC Class Codes: H04L 65/1104 Session initiation protocol [SIP]
• CPC Class Codes: H04L 65/1106 Call signalling protocols; H.323 and related

Abstract

Transparency control for session information for a communication network node can be set on a dynamic and/or static basis in relation to properties of a peer, an interface, a trust level, a session or a message. The transparency control can be based on message-related parameters, with the transparency of certain message parts being controlled on a static and/or dynamic basis in relation to transparency control settings. The transparency control can change upon the occurrence of a rerouting event that implicates recalculated transparency control settings. A message can be marked with transparency type settings that are evaluated to determine transparency control for the message. The transparency control can be based on transparency types of topology, dialog, identity, header, body, media, functional or accounting. The transparency control settings can be user selectable to permit transparency behavior tailored to the desires of an operator of the communication network node.

Claims

1. A computer implemented method for establishing transparency control for information in a session message at a communication network node, comprising:

defining a transparency behavior for each of a plurality of transparency types;

receiving an incoming session message that includes one or more session message properties;

deriving an outgoing session message at least in part by applying the transparency behavior associated with one or more of the transparency types to the incoming session message; and

sending the outgoing session message from the communication network node.

2. The method according to claim 1, further comprising:

determining the transparency behavior in accordance with one or more of a peer configuration, an interface configuration or a transparency control policy established in the communication network node.

3. The method according to claim 1, further comprising:

evaluating user selectable settings related to one or more of a dynamic or a static transparency behavior to at least partially determine the transparency behavior.

4. The method according to claim 3, further comprising:

evaluating at least one criterion related to at least a first transparency type to determine the transparency behavior associated with the first transparency type based on the evaluation of the user selectable setting indicating dynamic transparency behavior.

5. The method according to claim 4, further comprising:

evaluating the at least one criterion after the session message is rerouted to one or more of a new peer or interface to determine a first new transparency behavior associated with the first transparency type in relation to the new peer or interface.

6. The method according to claim 5, further comprising:

evaluating a least another criterion related to at least a second transparency type that is in a dependent relationship with the first transparency type to determine a second new transparency behavior associate with the second transparency type in relation to the new peer or interface.

7. The method according to claim 1, wherein the plurality of transparency types includes two or more of topology, dialog, identity, header, body, media, accounting, or functional.

8. The method according to claim 1, further comprising:

inserting at least one flag in the session message to identify at least one of the transparency types for which the associated transparency behavior is to be applied.

9. The method according to claim 4, further comprising:

evaluating one or more of an interface type or a trust level to determine the transparency behavior.

10. A device implementing a network node in a communication network that is operable to establish transparency control for information in a session message processed by the device, comprising:

a processor operable to execute instructions to;

define a transparency behavior for each of a plurality of transparency types;

receive an incoming session message that includes one or more session message properties;

derive an outgoing session message at least in part by applying the transparency behavior associated with one or more of the transparency types to the incoming session message; and

send the outgoing session message from the communication network node.

11. The device according to claim 10, wherein the processor is further operable to:

determine the transparency behavior in accordance with one or more of a peer configuration, an interface configuration or a transparency control policy established in the communication network node.

12. The device according to claim 10, wherein the processor is further operable to:

evaluating user selectable settings related to one or more of a dynamic or a static transparency behavior to at least partially determine the transparency behavior.

13. The device according to claim 12, wherein the processor is further operable to:

evaluate at least one criterion related to at least a first transparency type to determine the transparency behavior associated with the first transparency type based on the evaluation of the user selectable setting indicating dynamic transparency behavior.

14. The device according to claim 13, wherein the processor is further operable to:

evaluate the at least one criterion after the session message is rerouted to one or more of a new peer or interface to determine a first new transparency behavior associated with the first transparency type in relation to the new peer or interface.

15. The device according to claim 14, wherein the processor is further operable to:

evaluate a least another criterion related to at least a second transparency type that is in a dependent relationship with the first transparency type to determine a second new transparency behavior associate with the second transparency type in relation to the new peer or interface.

16. The device according to claim 10, wherein the plurality of transparency types includes two or more of topology, dialog, identity, header, body, media, accounting, or functional.

17. The device according to claim 10, wherein the processor is further operable to:

insert at least one flag in the session message to identify at least one of the transparency types for which the associated transparency behavior is to be applied.

18. The device according to claim 13, wherein the processor is further operable to:

evaluate one or more of an interface type or a trust level to determine the transparency behavior.

19. A computer implemented method for establishing transparency control for session information at a communication network node, comprising:

defining a transparency behavior for each of a plurality of transparency types in at least one of a plurality of subsets of transparency behavior types;

identifying at least one criterion associated with a current session;

identifying at least one transparency behavior in at least one of the subsets in accordance with the at least one criterion;

deriving an outgoing session message at least in part by applying the identified at least one transparency behavior; and

sending the outgoing session message from the communication network node.

20. The method according to claim 19, further comprising:

receiving an incoming session message that is associated with the at least one criterion for establishing transparency behavior;