You would have to use the page feature as mentioned above.
And to answer the ACD queue key is programmed with a 1+ACD group
102 = group 2

The queue key can be used if it is ringing on another agents phone you have to turn on that in the options.

Pick Up Ringing ACD Call
When an ACD call has been assigned to an agent and begins ringing the agent’s telephone,
the call cannot be answered with an ACD QUEUE key or by dialing 4 7 and the 2–digit
ACD group number. This is how the system operates when the option is programmed N (no).
When the option is programmed Y (yes), calls ringing on agents’ telephones can be answered
with an ACD QUEUE key or by dialing 4 7 and the 2–digit ACD group number. This
option defaults to N.

Don't know it that will help.?

mjc