Hotline destination is only for analog station types.
add a station with set type 2500 and X port it.
add personal abbreviated dialing list 1 and on the list use the first entry and enter the access code for calling the operator. (this could be 0, vdn, hunt-group extension, etc.)
# add new station as 2500 with X for port
# set Hotline Dest as below
# change abbreviated-dialing personal list 1 for this new station
# In the example below, the new station 7872, operator 7900, 6408D ext is 7801
add station 7872
ABBREVIATED DIALING
List1: personal 1 List2: List3:
HOT LINE DESTINATION
Abbreviated Dialing List Number (From above 1, 2 or 3): 1
Dial Code: 1
change abbreviated-dialing personal 7872 list 1 Page 1 of 1
ABBREVIATED DIALING LIST
Personal List: 7872 List Number: 1
Size (multiple of 5): 10
DIAL CODE
1: 7900
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# change your 6408D station first button to "abrdg-appr" of the hotline analog
# station. When you go off-hook it should ring the operator
change station 7801
BUTTON ASSIGNMENTS
1: abrdg-appr Ext:7872
2: call-appr
3: call-appr
4: call-appr