Avaya 5420 - Manual (Page 45)

Using Visual Voice
2420 and 5420 User Guide Page 41
IP Office 4.0 15-601077 Issue 8 (11th December 2006)
Voicemail Transfer
Unlike the standard transfer, Voicemail Transfer allows you to transfer a call to another user's mailbox.
To transfer the call to another mailbox:
1. Press Voice.
2. Key in the user's extension number.
3. Press Vmail Transfer.
The call will be transferred directly to the users mailbox; the extension is not alerted.