This is a common thing actually. The same thing happens on Android phones. They used to play those kind of wav files but at 2.0 or 2.1 or some version they stopped supporting the codec that most phone systems use for voicemails.
I have over 400+ Android phones that I support and all those users have to download a 3rd party app to play those wav files. (We recommend Remote WAV) I don't know if those codecs are licensed by Cisco or somebody and nobody wants to pay a license fee to use them or what.. it sucks.
The formats at issue are GSM6.1, and I think some ULAW and ALAW formats. (I don't know much about that stuff). Most phone systems will let you modify the type of codec used, I'm going to start exploring that with our phone guys.
11-14-2012 11:08 AM