After you connect a handset to your Imagine router, you can access your Imagine Voicemail Service by dialling 171 on your handset.
Follow the prompts to set up your voicemail including:
Press 0 for your mailbox options (record your voicemail, busy messages and password options)
Press 1 to listen to your new messages
Press 2 to listen to saved messages
Press 3 for advanced options
To set up other phone features such as call forwarding or call barring see here