Canon MF4890 Fax - How to set up distinctive ring?

[Ackis]

Hey everyone I have a Canon MF4890 all in one printer.  I just got distinctive ring set up for our phone line and I want to set it up so we have a fax line.

I went through the options and I haven't been able to find out where I can configure this.

I have the options on the line for:

2 short rings

1 short, 1 long, 1 short

or

3 short rings

Thanks.