Comments
www.voip-info.org/wiki/view/DID
Posted by crouse
www.rcm-usa.org/What-is-DID.htm
Posted by crouse
DID - Direct Inward Dialing (also called DDI in Europe) is a feature offered by telephone companies for use with their customers' PBX system.
www.3cx.com/PBX/DID.html
Posted by akumar_8181
au.answers.yahoo.com/question/index
Posted by crouse
uk.answers.yahoo.com/question/index
Posted by crouse
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