Granted Patent B2

US 8,755,371 · App. 12/748,321 · Granted Jun 17, 2014

Abstract

Claims (58)

1. A method, comprising:

filtering an ingress call based on a plurality of ingress-call parameter values, wherein filtering includes identifying a source of the ingress call and applying a common source policy to the ingress call based on the source, the common source policy including match parameters for matching ingress call parameters and set parameters for modifying ingress call parameters, wherein applying a common source policy includes modifying an ingress-call parameter of the ingress call based on one of the set parameters;

converting a filtered ingress-call parameter value to an egress-call parameter value;

filtering an egress call based on a plurality of egress-call parameter values, the plurality of egress-call parameter values including the egress-call parameter value;

modifying a parameter value for the egress call based on a plurality of egress-call-peer parameter values;

tagging the ingress call based on the ingress-call parameter values and the egress-call-peer parameter values, the modifying for the egress call being based on the tagged ingress call; and

associating the ingress call with an ingress call peer based on the ingress-call parameter values and ingress-call-peer parameter values.

2. The method of claim 1 wherein applying the common source policy to the ingress call based on the source includes:

filtering the identified ingress call based on the common source policy.

3. The method of claim 1 , further comprising selecting a first destination from an identified group of destinations for the ingress call based on a criterion, the criterion being at least one selected from a filter priority, a call-peer priority, a filter match strength, or an administration filter policy.

4. The method of claim 1 , further comprising selecting a first destination from an identified group of destinations for the ingress call based on time-of-day filtering or load-balancing.

5. The method of claim 1 , further comprising selecting a first destination from an identified group of destinations for the ingress call based on at least one of a least recently used destination or a percent utilization of a destination.

6. The method of claim 1 , further comprising selecting a first destination from an identified group of destinations for the ingress call based on at least one of an ISDN/SIP response code for run-time or a redirect.

7. The method of claim 1 , further comprising mapping an error code for a dropped call when the error code is returned back to a caller, the mapping including at least one of ceasing attempts to terminate the ingress call or redirecting the ingress call.

8. The method of claim 1 , further comprising associating the ingress call with an ingress call peer based on an automatic number identification (ANI) associated with the ingress call.

9. The method of claim 1 , further comprising associating the ingress call with an ingress call peer based on the plurality of ingress-call parameter values, the plurality of ingress-call-peer parameter values and an automatic number identification (ANI) associated with a call origination and common to all terminations.

10. The method of claim 1 , further comprising:

associating the ingress call with an ingress call peer based on the plurality of ingress-call parameter values and the plurality of ingress-call-peer parameter values, and an automatic number identification (ANI) associated with the ingress call;

instantiating the egress call based on the tagged ingress call; and

filtering the egress call based on the tagged ingress call.

11. The method of claim 1 , further comprising associating the ingress call with an egress call peer based on the plurality of egress-call parameter values, the plurality of ingress-call-peer parameter values and an automatic number identification (ANI) associated with a call termination and common to all originations.

12. The method of claim 1 , further comprising:

tagging the ingress call based on a required class of service, the modifying the parameter value for the ingress call being based on the tagged ingress call.

13. The method of claim 1 , further comprising:

tagging the ingress call based on automatic number identification (ANI associated with the ingress call; and

selecting a termination based on the tagged ingress call.

14. The method of claim 1 , further comprising:

tagging the ingress call based on a dialed number identification; and

terminating the ingress call based on a tag applied during the tagging.

15. The method of claim 1 , further comprising:

selecting a first destination for the ingress call among an identified group of destinations based on a criterion; and

abandoning a call attempt to the first destination when a maximum number of call attempts for a call source has been reached.

16. The method of claim 1 , further comprising:

selecting a first destination for the ingress call among an identified group of destinations based on a criterion; and

abandoning a call attempt to the first destination when a maximum post-dial delay for a call source has been reached.

17. The method of claim 1 , further comprising instantiating a call peer and a device based on the plurality of ingress-call parameter values, the plurality of egress-call-peer parameter values, and the plurality of egress-call parameter values when the call peer does not exist and when the device does not exist.

18. The method of claim 1 , further comprising:

identifying a source of the ingress call based on at least one of a layer 2 qualifier or a layer 3 qualifier; and

applying a routing policy to the ingress call based on the source.

19. The method of claim 1 , further comprising:

identifying a source of the ingress call based on a virtual LAN identifier associated with the ingress call; and

applying a routing policy to the ingress call based on the source.

20. The method of claim 1 , further comprising:

identifying a source of the ingress call based on at least one of a layer 2 qualifier or a layer 3 qualifier; and

applying a marker to the ingress call based on the source, the marker adapted to be used by an egress network for quality of service.

21. The method of claim 1 , further comprising:

identifying the source of the ingress call based on a DiffServ/TOS marking associated with the ingress call; and

applying a routing policy to the ingress call based on the source.

22. The method of claim 1 , further comprising:

identifying a source of the ingress call based on a priority-bit identifier associated with the ingress call; and

applying a routing policy to the ingress call based on the source.

23. A computer program stored on a non-transitory computer-readable medium, the computer program comprising:

an identifying instruction configured to identify a source associated with an ingress call;

an applying instruction configured to apply a common source policy to the ingress call based on the source, the common source policy including match parameters for matching ingress call parameters and set parameters for modifying ingress call parameters, wherein applying a common source policy includes modifying an ingress-call parameter of the ingress call based on one of the set parameters;

a tagging instruction configured to tag a parameter value associated with the ingress call based on the common source policy to produce a tagged parameter value, wherein the tagging instruction is configured to tag the ingress call based on the tagged parameter value and egress-call-peer parameter values;

a matching instruction configured to match an egress call with a corresponding ingress call based on the tagged parameter value;

a modifying instruction configured to modify the egress call based on the tagged ingress call; and

an associating instruction configured to associate the ingress call with an ingress call peer based on the ingress-call parameter values and ingress-call-peer parameter values.

Assignments (9)