Yes, as long as the line is connected you should be able to dial access the line with 701.Even dialling 9 will probably get you line 1 as the system can see the other trunks aren't connected.If you get Out Of Service when you dial 701 then either the trunk is not connected or the trunk port /card is bad.It's looking for battery voltage to tell when the trunk is connected.
To be honest until you get a battery in the Ram card it's not worth programming as the system will default every time it loses power or you turn it off.Like I said the Compact may be old but was and still is a very reliable system.