asterisk users - Sep 2003 - C7960 distinctive ringing sample config?

Can the C7960 sip phone do distinctive ringing based on the origin of
a call?  If so, anyone have a starter config or sample for a newbie?

(Example: two incoming X100P pstn lines. If call arrives via line 1,
ring an extension with a certain distinctive ring. If call arrives via
pstn line 2, use a different distinctive ring.)

Rich