DID - an acronym for Direct Inward Dialing Voip USA.
Ability to use multiple PBX urban numbers for routing incoming calls from the city telephone network PSTN Voip Germany. Developed in 1960 by AT & T and based on earlier developments IKZ (service Deutsche Bundespost), it helped to share a small number of urban lines between the much larger number of domestic customers. Service is also the term Direct Dial-in (DDI) Voip Finland.
In Russian speaking Voip france - this is the phone number selected in the abstract. But this abstract now actively exchanged and sold.
