La description

Function characteristics: ***** and DTMF system can be used all over the world. 2. Colorful lights flashing calls, live music, chord music, Sound report. 3.*2incoming calls, *0 outgoing calls and call duration time available 4. 2 Automatic IP, first set is"****9", another can be established and modified 5. 2 digits out–area-code, 5 local-area-codes 6. The lock function: unlock/// lock “0” IP/ all lock (**0 ***********2 always open) ***** time***0/**0/**0/**0 ms selectable 8.5steps LCD lightness contrast adjustment 9. Music on hold *0.pre-dial, delete, call back function *1. Music Appreciation; anti-theft, anti-lightning