| Specifications︰ | 1©yFSK/DTMF CID function and auto-detecting;
2©yChecking outgoing number and conversation time;
3©yChecking incoming number and 1.calling back;
4©yFiltering lock area code;
5©yPe-dial and correct number , each group of number including 32 digits;
6©ymusic on hold ;
7©yLock function;
8©yRedial function:
9©yPause/p-t switch
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