18
2.1
System Program
2.1.2
Play Music on Hold
Steps
Press Button
du
0 2 0 0 0 8 #
Extension 8001
Off-hook
System Password
Music playing
1 4 #
On-hook
2008
: It is the original 4-digit password for System Program;
Music: the built-in music can not be changed ,it will be played when Caller is transferring;