| http://www.w3.org/ns/prov#value | - The possible transmission of data in off-hook mode (it is a telephone terminal or an entity which is here in off-hook mode) coupled with the call waiting indication signal enables the device, which is off-hook and is ???spying??? on the line, to obtain information on the incoming call (nature, identity, etc), by virtue of its V23 reception modem, as illustrated in FIG. 6.
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