The selective call acceptance allows controlling incoming calls by making a list of telephone numbers which you are ready to accept. But incoming calls from subscribers that are not listed are directed to the answering machine by which the caller is informed that you do not accept calls at the moment.
E-Resource 21 started its business operation in 1st August 2000 with its principal business engaged mainly in the Civil Engineering Construction and related business including Employment Agency for the local and oversea construction business. E-Resource 2
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