dtmf problem!!!! in multisim

hey guys

i am making a project which require dtmf. we are using um 91214 b chip.

now the problem is there is no dtmf in multisim.

what shuld i do??

or is there any other simulator where i can find dtmf module??

Simulating thing don't know but I'm generating DTMF tones using Adobe Audigy.