How can I show called number and the trunk group name on screen??

[yiuyiu]

I would like to show the trunk group name on my phone's screen, so I changed the "out going display" in Trunk Group setting to "y", after commit the change, the trunk name shown on the screen... but the called number is gone... and shown "ARS" instead of the called number

How can I show both on the screen when I dialed to outside call...

Many Thanks.