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.