You can record your voicemail greeting, name, and busy messages all from your Digium phone.
To get started dial your voicemail access extension (899 by default). You may be prompted for your voicemail password or PIN.
If you do not know your voicemail PIN, you will need to contact your PBX Administrator or open a support ticket with VOICE1 to reset your voicemail PIN.
Once you have entered your voicemail PIN, press 0 for Mailbox Options.
Follow the directions over the phone and you will have a new voicemail recording.
Optionally you can use the web interface to record and upload voicemail greetings. To learn how look here.