voice mail (VVM) in android

I am trying to develop an android application which will retrieve a voicemail message left by a user, but I'm stuck in its development b开发者_JAVA百科ecause resources on Internet are quite limited about voicemail. I haven t had any problems in my application to retrieve a sms but for voicemail, it s another thing ....

I would advice in order to guide me because I am a bit lost

Thanks

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Voicemails are typically stored (in North America at least) on the carrier's voicemail system, which generally don't have standard, published programming interfaces for retrieving any data (I'm assuming they have SOME programming interface).

So not sure what you want is trivially possible.

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Visual voicemail requires a whole layer of carrier support that you're not going to find. If you do have carrier support then it's the carrier's burden to enlighten you as to the specifications for accessing it.

Voicemail isn't contained on the device as SMS messages are, so there's no analogous API.