| dynamic bandwidth allocation
Using dynamic bandwidth allocation, an
ISDN line can handle voice and data at the same time. This way, a person
downloading files from the Net could be yakking away on the phone over the
same ISDN line. To make this possible, the ISDN device reallocates one of
the channels used to carry data for the voice call. Once the call has been
completed, the second channel is returned to data transmission so the
transfer can be done efficiently. This dynamic allocation can take place
only if the ISDN connection uses MPPP. |