ibod is a ISDN MPPP bandwidth on demand daemon designed to operate
in conjunction with isdn4linux.
It is normally started at boot time, but can be started and stopped
at any time. The program monitors inbound and outbound traffic on
the ISDN interface. When the required bandwidth exceeds the capacity
for one IDSN B-channel (64kbps) a second (slave) channel is connected
according to the MPPP protocol. When the traffic decreases below
one channel capacity, the slave channel is disconnected.