User`s guide

277
Entity Instance Parameter Values
Equivalent Web
Parameter
2=8583 Ascii 4 byte
PADS n
Configuration – Network > Legacy Protocol > X.25> PADS n
PAD which stands for Packet Assembler Dissembler is used to interface between a
character based serial connection and an X.25 synchronous packet switched network.
There are two main elements to the configuration procedure for accessing X.25 networks:
General and service related parameters
PAD parameters (X.3)
Each X.25 PAD configuration page also includes a sub-page detailing the X.3 PAD
parameters. Collectively this set of values is known as a PAD profile. Your unit contains four
pre-defined standard PAD profiles numbered 50, 51, 90 and 91. You may also create up to
four custom PAD profiles numbered 1 to 4 for each PAD instance.
Use PAD over interface
This section is used to select whether the PAD instance will use ISDN B-channel X.25, ISDN
D-channel X.25, TCP, UDP, VXN, SSL TCP or SSL XoT 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 synchronous port, select “LAPB”. In the case of LAPB and LAPD it is
also possible to specify an interface number. 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.
Use backup interface
This section is used to specify a backup interface that will be used automatically if the call to
the primary interface fails. Note that the primary interface will be tried first for every new
call attempt.
X.25 Settings
Default X.25 packet size
This parameter determines the default X.25 packet size. This may be set to “16”, “32”,
“64”, “128”, “256”, “512” or “1024”, but the actual values permitted will normally be
constrained by your service provider.
Answer incoming calls from NUA
This is the NUA that the unit responds to for incoming X.25 calls.
Only answer calls with CUG
The PAD will only answer calls with this Call User Group (CUG) specified.
Use X.25 Call Macro macroname to an ATD command
This parameter specifies the name of an X.25 call macro that is used when an ATD
command is received by the unit. The ATD command is ignored, and a PAD CALL command
using the macro replaces it. The purpose of this feature is to allow non-PAD terminals to use
an X.25 PAD network connection. X.25 call macros are set up in the Configuration -
Network > Legacy Protocols > X.25 > Call Macros web page, or by using the macro
text command.
Use NUA
This NUA will be used as the calling NUA when an outgoing X.25 call is made.