NEC ASPILA EX Feature Manual page 306

Operation
292 Features
To place a call over a PBX trunk:
1. At system phone, press idle CALL key and dial 804.
OR
At single line telephone, lift handset and dial 804.
2. Dial PBX trunk group number (1-9, 01-32 or 001-100).
3. Dial PBX access code and number
OR
1. (System Phone only) Press PBX trunk group key (PGM 15-07 or SC 852: *02 + group).
2. Dial PBX access code and number.
OR
1. At system phone, press idle CALL key and dial 9.
OR
At single line telephone, lift handset and dial 9.
2. Dial PBX access code and number.
OR
1. At system phone, press idle CALL key.
OR
At single line telephone, Lift handset.
2. Dial 805.
3. Dial PBX trunk number (e.g., 005 for line 5).
4. Dial PBX access code and number.
OR
1. Press PBX trunk key (PGM 15-07 or SC 851: 1 to 200).
2. Dial PBX access code and number.
In all cases above, Toll Restriction may prevent your call.
Note:
PBX Compatibility
Aspila EX Software Manual