Call screening service for inbound communications

1. A method comprising:

identifying origin carrier information of a call message intended for a call recipient based on call origin information and a trunk group associated with the call message;

removing the call origin information from the call message;

adding a trunk group identifier (TGRP) to the call message header of the call message to create a modified call message that identifies the origin carrier information; and

forwarding the modified call message to a destination network associated with the call recipient.

2. The method of claim 1 , wherein the call message comprises a SIP INVITE.

3. The method of claim 2 , wherein the contact header is added to the SIP INVITE message.

4. The method of claim 1 , comprising adding a universally unique identifier (UUID) to create the modified call message by adding the UUID to a payload portion of an X-header of the call message.

5. The method of claim 1 , wherein the TGRP further identifies a location identifier and an IP address.

6. The method of claim 1 , wherein determining the origin carrier network is further based on an operating company number parameter from an external data source based on a telephone number identified by the TGRP in the call message header.

7. An apparatus comprising:

a processor configured to

identify origin carrier information of a call message intended for a call recipient based on call origin information and a trunk group associated with the call message;

remove the call origin information from the call message;

add a trunk group identifier (TGRP) to the call message header of the call message to create a modified call message that identifies the origin carrier information; and

forward the modified call message to a destination network associated with the call recipient.

8. The apparatus of claim 7 , wherein the call message comprises a SIP INVITE.

9. The apparatus of claim 8 , wherein the contact header is added the SIP INVITE message.

10. The apparatus of claim 7 , wherein the processor is further configured to add a universally unique identifier (UUID) to create the modified call message and the UUID is added to a payload portion of an X-header of the call message.

11. The apparatus of claim 7 , wherein the TGRP further identifies a location identifier and an IP address.

12. The apparatus of claim 7 , wherein determine the origin carrier network is further based on an operating company number parameter from an external data source based on a telephone number identified by the TGRP in the call message header.

13. A non-transitory computer readable storage medium configured to store instructions that when executed cause a processor to perform:

identifying origin carrier information of a call message intended for a call recipient based on call origin information and a trunk group associated with the call message;

removing the call origin information from the call message;

adding a trunk group identifier (TGRP) to the call message header of the call message to create a modified call message that identifies the origin carrier information; and

forwarding the modified call message to a destination network associated with the call recipient.

14. The non-transitory computer readable storage medium of claim 13 , wherein the call message comprises a SIP INVITE.

15. The non-transitory computer readable storage medium of claim 14 , wherein the contact header is added to the SIP INVITE message.

16. The non-transitory computer readable storage medium of claim 13 , wherein the processor is further configured to perform adding a universally unique identifier (UUID) to create the modified call message by adding the UUID to a payload portion of an X-header of the call message.

17. The non-transitory computer readable storage medium of claim 13 , wherein the TGRP further identifies a location identifier and an IP address.