Partner ACS code to grab a particular line

[Tripoth]

I am pretty sure there is a code to grab a particular outside line from a basic anolog phone on a Partner system.
I just don't remember the code string.
Could someone enlightne me please?

 

[wesleyjames]

Intercom 8 and the line number. so to grab line 3 dial intercom 803

 

[WikiTech]

For basic Telephones on Partner, program Auto Line Select for the ext.# to Intercom first, then your line order. This way, when you go off-hook, you are on the intercom and you can dial 9 out or a specific line as described above.