Making a call from an MCR key associated with another terminal 1

[Simon Shaw]

I do not currently have a working system, however I am trying to analyze the extracted configuration of an old system.
I have the following setup where station 77 0 0 1 will also receive all the incoming calls to station 77 0 0 0 on extension 1520.
What I would like to understand is whether it is possible to initiate an outgoing call on line 1520 from station 77 0 0 1?
Thanks in advance,
Simon

DES 1520
TN 077 0 00 00 VIRTUAL
TYPE I2002
KEY 00 MCR 1520 0 MARP

DES 1521
TN 077 0 00 01 VIRTUAL
TYPE I2002
KEY 00 SCR 1521 0 MARP
01 MCN 1520 0

 

[gwebster]

Yes - press key 1 on 77 0 0 1 and it will make a call using extension 1520.

 

[Simon Shaw]

Thanks, that is really helpful.
Is there a way to configure this such that 77 0 0 1 can both receive and make calls on extension 1521 but only receive calls on line 1520?