2N Helios IP User manual, 1510 v1.13 - Manual (Page 59)

Quick Configuration for Calling 3.2
59
Lock Setting
To set the lock 1 codes use the Basic settings –> Lock 1 menu.
Lock setting
Set whether and for how long the lock should be active after the correct unlocking
code has been entered.
Lock codes
Enter the lock 1 opening codes for 2N ® Helios IP. If a code matches another code
entered earlier in 2N ® Helios IP, press . The symbol will appear next to the
code.
Having completed the configuration, restart 2N ® Helios IP, refer to the appropriate
subsection. From now on, 2N ® Helios IP is ready to make calls.