1
2
OK
3
OK
4
7
OK
5
OK
7-8
Communications Settings
Press [Additional Functions].
Press [
] or [
press [OK].
Press [
] or [
press [OK].
Press [
] or [
press [OK].
Press [
] or [
] until <SYSTEM SETTINGS> appears
] until <COMMUNICATIONS> appears
] until <R-KEY SETTING> appears
] until <PBX> appears
press [OK].