It is possible to supply the name of a phonebook file. The phonebook file has the following format:
number<tab>name for numberThe number must be the first thing on the line (no leading spaces). The name is separated from the number by a tab. Lines beginning with # are ignored, as are empty lines.
The output is similar to this:
ISDN channel status: Channel Usage Type Number ---------------------------------------------------------- line0 Out Net 0204229700 line0 OffUsage is one of Off(line), Out(going), In(coming) or Excl(usive).
Type is one of raw (raw device), Modem (modem/tty emulation), Net (IP interface), Voice (voice call) or Fax (fax transmission).
Number is either the called party's number (outgoing) or the calling party number (incoming).