Follow Along ID not working in busy condition - Sundance Business VOIP Telephone Help

I have a client with a DK280. They have a sub tenant on their system. I set up a CO line for the tenant. When a tenant call comes and forwards on a no answer condition the follow along id works in voicemail. If a call forwards on a busy condition the follow along id does not work. Any resolution suggestions?
thanks

How are the calls ringing in? Are the calls ringing to 1 phone and then follows the call forward on that phone? Or are the calls first answered by voicemail? What make is the voicemail?

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<font face="Verdana, Arial" size="2">Originally posted by phonemeister:
How are the calls ringing in? Are the calls ringing to 1 phone and then follows the call forward on that phone? Or are the calls first answered by voicemail? What make is the voicemail?</font>

The calls are rining in to a phone. The forwarding is then based on that phone. Voicemail is Active voice Lingo.
Thanks

Have you checked programs *81, *84, *87?