For IP, the modem will allocate internal IP addresses to each end of the ESC channel and
these will only be visible internally within the modem.
The RS485-Local and RS485-Remote modes are referred to as Link-Local and Link-
Remote, respectively. These modes create internal links between the ESC port of the
modem and the Remote M&C port in order to facilitate passing M&C messages over
satellite to control a remote modem without the need for external loopback cables
between the Async ESC and Remote M&C ports. Both point-to-point and point-to-
multipoint RS485 over the ESC channel are supported. The following drawing shows the
internal connections that are made.
ESC Tx
ESC Rx
M&CRx
M&CTx
Link-Local
ESC Tx
ESC Rx
M&CRx
M&CTx
Link-Remote
With both of these options, the physical ESC port is disabled due to being internally linked
to the M&C port. The mode must be set according to whether the modem is at the local or
remote end of the link.
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