NEC ASPILA EX Feature Manual page 215

Operation
Aspila EX Software Manual
To disconnect a busy trunk:
System Phone
1. Press line key for trunk.
OR
Dial trunk access code (805 + trunk number).
You hear busy tone. Trunk numbers are 001-200.
2. Dial 724.
You hear confirmation beeps as the system disconnects the trunk.
You can now place a call on the free trunk.
3. Press line key for the trunk disconnected in Step 2.
OR
Dial the trunk access code (805 + trunk number) for the trunk disconnected in Step 2.
Single Line Telephone
1. Dial trunk access code (805 + trunk number).
You hear busy tone. Trunk numbers are 001-200.
2. Dial 724.
You hear confirmation beeps as the system disconnects the line.
3. Hookflash.
You can now place a call on the free line.
4. Dial the trunk access code (805 + trunk number) for the trunk disconnected in Step 2.
Forced Trunk Disconnect
Features 201