I am using IPK2 and ViewMail for receiving incoming fax. Each extension number 71xx has associated with another virtual extension 72xx for receiving incoming fax. I have problem to forward all incoming call for 72xx to voicemail port 200 by using service code 390 (NEC's 790). I press Speaker then 390 on operator's extension, it shows "CF - All Dest No Split 1: Set 0: Cancel". I have no chance to enter virtual extension number 7213 and voicemail port 200. Could someone kindly tell me how to forward incoming fax for x7213 to voice port 200?