Sierra Wireless DART 200 CDPD Modem - Manual (Page 54)

DART 200 CDPD Modem User’s Guide 4 Broadcast and Multicast Operation
Sierra Wireless, Inc. 4-4
Some software stacks, used when the DART 200 operates in Serial Line
Internet Protocol (SLIP) mode, only receive broadcast messages
(including multicast) on a specific IP destination address, specifically the
point-to-point NEI. To provide for this limitation, the DART 200 permits
specifying whether or not the received destination IP Address (multicast
address) is replaced with the active point-to-point NEI before the
received packet is passed across the SLIP interface to the software stack.
This feature is implemented by using the AT*G command. AT*G1
(default) causes the received destination address to be replaced as
described above. AT*G0 passes the received packet across the SLIP
interface to the TCP stack unmodified, with the destination address being
that of the Multicast NEI.