1-6 lines; 8-32 extensions Caller ID Password Programming Boss/Secretary Function Different Ringing for Internal & External call 208A,308A,312A,316A can compatible with Door bell & Door opener
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1-6 lines; 8-32 extensions Caller ID Password Programming Boss/Secretary Function Different Ringing for Internal & External call 208A,308A,312A,316A can compatible with Door bell & Door opener