Case Communications syncro 1496, Reference Manual

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When in dial backup mode, if ''D1 is set, your modem will attempt
to restore to the leased line only on DTR being raised: it does not
matter if the leased line has recovered or not, the modem will
attempt to pass data over the leased line.
E Echo Commands
This command determines whether command characters entered at
the port to which you are connected will be echoed back.
E0
Disable echo.
E1 Enable echo. Default.
Echo should normally be enabled if the port is operating in full-
duplex, and disabled in half-duplex mode.
%E Remote Configuration Control
This command allows you to select which remote configuration
control facilities you require at the local modem (i.e. the one you are
currently configuring). An appropriate selection is also required at
the remote modem(s).
a) Will the local modem accept remote configuration commands
from the attached DTE?
b) Will the local modem accept as its active configuration, a
configuration sent from the remote modem?
c) Will the local modem accept commands from the remote modem
to send the local modem's current active configuration to the
remote modem?
Command (a) (b) (c) Remarks
%E0
no no no Disabled
%E1 no no yes
%E2 no yes no
%E3
no yes yes
%E4
yes no no
%E5 yes no yes
%E6 yes yes no
%E7
yes yes yes Default
Care must be taken when changing the configuration of a remote
modem. For example, if the remote modem's active configuration is
X450-310851 Issue 2 8-8 Rev.0