Establishing a remote connection 3.3 – Westermo MR Series User Manual
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The Active Port
3.2.2
When entering “AT” or text commands it is important to understand that in most cases, the com-
mand only affects the settings for the “active” port. This is usually the port to which you are physi-
cally con nected but you may, if necessary, set the active port to another port of your choice using
the “AT\PORT=N” command where “N” is 0-3.
Establishing a Remote Connection
3.3
Once you have finished configuring the unit, there are several ways of establishing a link to a remote
system:
.
An outgoing V.120 call may be made using the “ATD” command
•
You can initiate a DUN session to establish a dial-up PPP connection.
•
An outgoing X.25 call may be made using the “ATD” command followed by the X.28 CALL
•
command.
An outgoing TPAD (Transaction PAD) call may be made by using the TPAD “a” (address)
•
command followed by the appropriate NUA (this is normally only carried out under soft-
ware control).
Similarly, incoming calls will be handled according to which protocols have been bound to the ASY
ports and whether or not answering is enabled for each protocol.