With version 2.0.0 of vbox the recorded files have a new header, that does not only include compression mode and connection information, but also information about the caller.
The current headers hold this information:
time of recording the message,
With this information it's possible for other programs to get the information about a message. The detailed format is described in the file libvbox.h as structure vaheader_t (this file is not included in debian gnu/linux; if you want to develop isdn programs you should get the source code).
This manual page was written by Andreas Jellinghaus <[email protected]>, for Debian GNU/Linux and isdn4linux.