IPK1/IPK2 i am assuming with cosession voicemail ?

Could be if its cosession voicemail , going by the Dterm80 you said she was trying from, from memory you need to allow setup in which ever vmail box to allow greetings. Try logging into cosession vmail and go to this users vmail box and allow greetings. if you dont know what i am meaning its best to get your local dealer out to do this for you.