Westermo MR Series - Manual (Page 273)

273 6622-3201
Web Interface and Command Line Reference Guide www.westermo.com
Calling NUA:
This is the NUA that the unit will report to the X.25 network as its own NUA. Often the X.25
network will override this NUA.
Clear Delay (s):
This parameter defines the time period for which the socket closing or the X.25 call clearing is
delayed by after the TPAD session has finished. For example, if this parameter is set to 10 then
10 seconds after the TPAD session is finished (NO CARRIER is seen on the ASY TPAD port)
the net work call (X25 or TCP socket) is cleared.
Layer 2 deactivation timer (s):
Once a TPAD X.25 call has been cleared, the unit will keep a LAPB instance active for the
length of time set by this parameter. This is to allow further TPAD transactions to take place
without hav ing to make another ISDN call. The default value of 10 seconds should be acceptable
for most applications.
If you select LAPD as the TPAD layer-2 interface, this value will automatically be set to 0 to dis-
able layer-2 deactivation. You may still override the 0 setting by entering a new value but note
that most network service providers prefer that LAPD connections are not repeatedly deacti-
vated.
Default packet size:
This parameter specifies the default X.25 packet size to be used for TPAD transactions.
Layer 2 interface:
This parameter is used to select whether the TPAD instance will use ISDN B-channel X.25,
D channel X.25, TCP, VXN or SSL as the transport protocol. For ISDN D-channel operation,
ensure that the “LAPD” option is selected. For ISDN B-channel operation or operation through
a synchro nous port, select “LAPB”.
Layer 2 interface #:
This parameter specifies which LAPB or LAPD instance to use for the relevant TPAD instance.
Select “0” or “1” for LAPB or “0” or “1” for LAPD. When using LAPB with ISDN this param-
eter may be set to “255”, which means use any free LAPB instance. This is useful when more
than 2 POS terminals are connected to the router and the acquirer does not support multiple
Switched Virtual Circuits (SVCs) on a single B-Channel.
Remote IP address:
When the unit is configured for XOT or TCP socket mode, this parameter is used to specify
the IP address of the host to which the XOT call is made. Note that the layer 2 interface must
be set to TCP.
IP mode:
This parameter is used to select XOT or IP socket mode when the Layer 2 interface has been
set to TCP.
IP port (TCP socket mode):
When making a TCP socket connection (i.e. the Layer 2 interface has been set to TCP), this
parameter must be used to specify the TCP port number to use.
IP length header:
When making a TCP socket connection (i.e. the Layer 2 interface has been set to TCP), setting
this parameter to “On” will specify the length of transaction data in a header packet. When set
to “8583 Ascii 4 byte”, the IP length header will conform to the ISO 8583 format.