PhonSoft Technical Library
Can't play the PhoneSoft .wav files on Vista
Configuration, Installation, MailCall, Unified MailCall
When running Windows Vista users might not be able to play WAV messages by multimedia.
This is due to the compression being used by PhoneSoft: voice messages compressed with Microsoft Codec at 1k/second use the TrueSpeech Codec.
Since this is not included by default Windows Vista, it needs to be installed manually.
Please follow links below to fix it