Methods and apparatus to provide presence information

1. A method comprising:

in response to a request for presence information, analyzing, by executing an instruction with a system including a processor, user input from a second user and monitored information from a monitoring sensor, wherein the user input indicates an availability of the second user for communication with a first user using a first communication method supported by a mobile device, wherein the monitored information identifies an external environmental factor that affects the availability of the second user to communicate using the first communication method; and

sending, from the system, a message indicating that the second user is available for communication using the first communication method.

2. The method of claim 1 , wherein the message indicates that the second user is unavailable for communication using a second communication method supported by the mobile device.

3. The method of claim 1 , wherein the user input indicates an unavailability of the second user for communication with the first user using a second communication method supported by the mobile device.

4. The method of claim 1 , wherein the first communication method is one of a text communication method or an audio communication method.

5. The method of claim 1 , wherein the external environmental factor includes a noise level.

6. The method of claim 1 , further including:

facilitating establishment, by the system, of a first communication session using the first communication method.

7. The method of claim 6 , further including:

in response to a second request for presence information associated with the second user, determining, by the system, that the first communication session is in progress and determining a first priority associated with the first user and a second priority associated with the second user; and

in response to a determination that the first priority is lower than the second priority, sending, by the system, a second message indicating that the second user is available for communication.

8. The method of claim 1 , wherein the external environmental factor affects an unavailability of the second user to communicate using a second communication method supported by the mobile device.

9. An apparatus comprising:

a processor; and

a memory that stores executable instructions that, when executed by the processor, facilitate performance of operations, including:

in response to a request for presence information, analyzing user input from a second user and monitored information from a monitoring sensor, wherein the user input indicates an availability of the second user for communication with a first user using a first communication method supported by a mobile device, wherein the monitored information identifies an external environmental factor that affects the availability of the second user to communicate using the first communication method; and

determining that a communication session associated with the first and second users is in progress, the communication session being established according to the first communication method;

determining a first priority associated with the first user and a second priority associated with the second user; and

in response to a determination that the first priority is lower than the second priority, sending a message to an end user device of a third user indicating that the second user is available for communication.

10. The apparatus of claim 9 , wherein the external environmental factor affects an unavailability of the second user to communicate using a second communication method supported by the mobile device.

11. The apparatus of claim 9 , wherein the operations further include:

sending a message indicating that the second user is available for communication using the first communication method and is unavailable for communication using a second communication method supported by the mobile device.

12. The apparatus of claim 9 , wherein the user input indicates an unavailability of the second user for communication with the first user using a second communication method supported by the mobile device.

13. The apparatus of claim 9 , wherein the first communication method is one of a text communication method or an audio communication method.

14. The apparatus of claim 9 , wherein the external environmental factor includes a noise level.

15. A tangible machine-readable storage device comprising instructions which, when executed, cause a machine to perform operations including:

in response to a request for presence information, analyzing user input from a second user and monitored information from a monitoring sensor, wherein the user input indicates an availability of the second user for communication with a first user using a first communication method supported by a mobile device, wherein the monitored information identifies an external environmental factor that affects the availability of the second user to communicate using the first communication method; and

sending a message indicating that the second user is available for communication using the first communication method.

16. The tangible machine-readable storage device of claim 15 , wherein the user input indicates an unavailability of the second user for communication with the first user using a second communication method supported by the mobile device, and wherein the message indicates that the second user is unavailable for communication using the second communication method.

17. The tangible machine-readable storage device of claim 15 , wherein the first communication method is one of a text communication method or an audio communication method.

18. The tangible machine-readable storage device of claim 15 , wherein the external environmental factor includes a noise level.

19. The tangible machine-readable storage device of claim 15 , wherein the external environmental factor affects an unavailability of the second user to communicate using a second communication method supported by the mobile device.

20. The tangible machine-readable storage device of claim 15 , wherein the operations further include:

receiving a second request for presence information associated with the second user;

in response to the second request, determining that a first communication session associated with the first and second users is in progress and determining a first priority associated with the first user and a second priority associated with the second user; and

in response to a determination that the first priority is lower than the second priority, sending a second message indicating that the second user is available for communication.