Identifying channels in a communication network

1. A method comprising:

receiving communications on a plurality of communication channels including at least a first communication channel and a second communication channel, a first frequency being associated with the first communication channel and a second frequency being associated with the second communication channel;

identifying when a channel change occurs from the first communication channel to the second communication channel by monitoring a change in an operating frequency from the first frequency for the first communication channel to the second frequency for the second communication channel; and

including an audio identifier associated with the second communication channel in an audio stream communicated via the second communication channel.

2. The method of claim 1 , wherein the audio identifier is uniquely associated with the second communication channel to identify when the second communication channel is active.

3. The method of claim 1 , wherein the plurality of communication channels includes an emergency channel of an emergency dispatch center.

4. The method of claim 1 , further comprising:

providing a user interface identifying the plurality of communication channels and a plurality of audio identifiers;

receiving a user input, the user input identifying a selected communication channel of the plurality of communication channels and a selected audio identifier of the plurality of audio identifiers; and

associating the selected audio identifier with the selected communication channel.

5. The method of claim 1 , wherein the audio identifier is provided in an audio file, the method further comprising playing at least a portion of the audio file when a transmission occurs on the second communication channel.

6. The method of claim 1 , further comprising:

delaying communicating a voice communication on the second communication channel;

transmitting the audio identifier; and

transmitting the voice communication after the audio identifier has been output.

7. The method of claim 1 , further comprising:

mixing the audio identifier with an initial portion of a voice communication to provide a mixed voice communication; and

transmitting the mixed voice communication.

8. The method of claim 1 , wherein

the plurality of communication channels includes at least two groups of channels, and

the method further comprises associating the audio identifier with one of the groups of channels to identify when any communication channel in the one group of channels is active.

9. The method of claim 1 , wherein the plurality of channels includes at least one virtual talk group in a push-to-talk communication network.

10. The method of claim 1 , wherein the audio identifier is a first audio identifier, the method further comprising:

identifying a command communicated via the second communication channel;

identifying a second audio identifier associated with the command; and

communicating the second audio identifier in an audio stream communicated via the second communication channel.

11. The method of claim 10 , wherein the command is to enable an electrical device to perform functionality associated with the command.

12. The method of claim 1 , wherein the communications are received over a trunk radio base station associated with multiple endpoints, the operating frequency is an operating frequency of the base station, and the multiple endpoints are capable to change the operating frequency of the base station, the method further comprising:

identifying when a channel change occurs by monitoring when the operating frequency of the base station is changed from the first frequency to the second frequency;

including the audio identifier associated with second frequency in the audio stream; and

communicating the audio stream to all other endpoints associated with the second frequency.

13. The method of claim 1 , wherein the plurality of communication channels provide a virtual talk group (VTG), the method further comprising:

identifying when a channel change occurs by monitoring when a communication channel is added or removed from the VTG;

including the audio identifier associated with an added or removed communication channel in the audio stream; and

communicating the audio stream to all other endpoints associated with the VTG.

14. The method of claim 1 , wherein the audio identifier associated with the second communication channel is included in the audio stream communicated via the second communication channel in response to an identification of an occurrence of the channel change from the first communication channel to the second communication channel.

15. The method of claim 1 , wherein the channel change includes a switch from an active first communication channel to an active second communication channel, the audio identifier being uniquely associated with the second communication channel to identify when the second communication channel is active.

16. The method of claim 1 , wherein the identification of when the channel change occurs is in response to receiving communications including the operating frequency.

17. The method of claim 1 , wherein the audio identifier associated with the second communication channel is included in the audio stream communicated via the second communication channel in response to monitoring the change in the operating frequency from the first frequency to the second frequency.

18. An apparatus, comprising:

at least one processor; and

a memory in communication with the at least one processor, the memory being configured to store a channel activity module executable by the at least one processor, and the channel activity module executed by the at least one processor causes operations to be performed, the operations comprising:

receiving communications on a plurality of communication channels including at least a first communication channel and a second communication channel, a first frequency being associated with the first communication channel and a second frequency being associated with the second communication channel;

identifying when a channel change occurs from the first communication channel to the second communication channel by monitoring a change in an operating frequency from the first frequency for the first communication channel to the second frequency for the second communication channel; and

including an audio identifier associated with the second communication channel in an audio stream communicated via the second communication channel.

19. The apparatus of claim 18 , wherein the audio identifier is uniquely associated with the second communication channel to identify when the second communication channel is active.

20. The apparatus of claim 18 , wherein the plurality of communication channels includes an emergency channel of an emergency dispatch center.

21. The apparatus of claim 18 , wherein the operations further comprise:

providing a user interface identifying the plurality of communication channels and a plurality of audio identifiers;

receiving a user input, the user input identifying a selected communication channel of the plurality of communication channels and a selected audio identifier of the plurality of audio identifiers; and

associating the selected audio identifier with the selected communication channel.

22. The apparatus of claim 18 , wherein the audio identifier is provided in an audio file, wherein the operations further comprise playing at least a portion of the audio file when a transmission occurs on the second communication channel.

23. The apparatus of claim 18 , wherein the operations further comprise:

delaying communicating a voice communication on the second communication channel;

transmitting the audio identifier; and

transmitting the voice communication after the audio identifier has been output.

24. The apparatus of claim 18 , wherein the operations further comprise:

mixing the audio identifier with an initial portion of a voice communication of a communication to provide a mixed voice communication; and

transmitting the mixed voice communication.

25. The apparatus of claim 18 , wherein

the plurality of communication channels includes at least two groups of channels, and

the operations further comprise associating the audio identifier with one of the groups of channels to identify when any channel in the one group of channels is active.

26. The apparatus of claim 18 , wherein the plurality of channels includes at least one virtual talk group in a push-to-talk communication network.

27. The apparatus of claim 18 , wherein the audio identifier is a first audio identifier and the operations further comprise:

identifying a command communicated via the second communication channel;

identifying a second audio identifier associated with the command; and

transmitting the second audio identifier in an audio stream communicated via the second communication channel.

28. The apparatus of claim 27 , wherein the command is to enable an electrical device to perform functionality associated with the command.

29. The apparatus of claim 18 , wherein the communications are received over a trunk radio base station associated with multiple endpoints, the operating frequency is an operating frequency of the base station, and the multiple endpoints are capable to change the operating frequency of the base station, the method further comprising:

identifying when a channel change occurs by monitoring when the operating frequency of the base station is changed from the first frequency to the second frequency;

including the audio identifier associated with second frequency in the audio stream; and

communicating the audio stream to all other endpoints associated with the second frequency.

30. The apparatus of claim 18 , wherein the plurality of communication channels provide a virtual talk group (VTG), the operations further comprising:

identifying when a channel change occurs by monitoring when a communication channel is added or removed from the VTG;

including the audio identifier associated with an added or removed communication channel in the audio stream; and

communicating the audio stream to all other endpoints associated with the VTG.

31. An apparatus comprising:

a communications module to receive communications on a plurality of communication channels including at least a first communication channel and a second communication channel, a first frequency being associated with the first communication channel and a second frequency being associated with the second communication channel;

a channel identifier module to identify when a channel change occurs from the first communication channel to the second communication channel by monitoring a change in an operating frequency from the first frequency for the first communication channel to the second frequency for the second communication channel; and

means for including an audio identifier associated with the second communication channel in an audio stream communicated via the second communication channel, said means operating responsively to an identification of an occurrence of the channel change from the first communication channel to the second communication channel.