Westermo MR Series - Manual (Page 310)

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Web Interface and Command Line Reference Guide www.westermo.com
Restarts:
It is normally possible to make X.25 CALLs immediately following the initial SABM-UA
exchange. In some cases however, the X.25 network may require an X.25 Restart before it will
accept X.25 CALLs. The correct mode to select depends upon the particular X.25 service to
which you subscribe.
The default value is “On”. This means that the unit WILL issue X.25 Restart packets. To prevent
the unit from issuing Restart packets set this parameter to “Off”.
Inactivity timeout (s):
This parameter specifies the length of time in seconds after which the PAD will terminate an
X.25 call if there has been no data transmission.
No Call L2 Timeout (s):
This parameter specifies the length of time in seconds after which the unit will disconnect a
layer 2 link if there are no layer 3 calls in progress. For LAPB sessions this will also terminate
the ISDN call.
PAD mode:
The PAD Mode parameter can be set to “Normal” or “Prompt Always On”. In Prompt Always
On mode, the ASY port attached to the PAD behaves as if it were permanently connected at
layer 2,
i.e. it always displays a “PAD>” prompt. AT commands may still be entered but the normal result
codes are suppressed. To disable this mode set the parameter to “Normal”.
STX/ETX mode:
When this parameter is “On”, the PAD will ignore data that is not encapsulated between ASCII
characters STX (Ctrl+B) and ETX (Ctrl+C). To disable this feature select the “Off” option.
Data trigger:
This parameter specifies a string, which if it appears in the received data causes a “Data Trigger”
(47) event to be generated and recorded in the event log.
Inactivity Event Time(s):
This specifies the time in seconds in which if there is no activity on the PAD an event in the
event log will be posted. This can be used to trigger email exceptions.
Backup Interface Parameters
Layer 2 interface:
This parameter specifies whether the backup service uses “LAPB”, “LAPD” or “None”.
Layer 2 interface #:
This parameter specifies which LAPB or LAPD instance to use for the backup interface. Select
“0” or “1” for LAPB, or “0”, “1” or “2” for LAPD.
LCN:
The LCN parameter is used to set the first LCN that will be used for the backup interface.
LCN direction:
This parameter determines whether the LCN used for the backup X.25 interface is increment-
ed or decremented from the starting value when multiple X.25 instances share a single layer 2
connection.
Backup IP address:
If the layer 2 interface is specified as “TCP” for an XOT call, then this field indicates the destina-
tion host that will answer the XOT call if the host specified in the Remote IP address (XOT
only) parameter is unavailable.