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Chapter Two: Getting Started 4. Gather configuration information
23
Gather X.25 information
If you intend to use AO/DI, you will require the following information:
Gather V.120 information
If you intend to use V.120, you will require the following information:
V.120 scripting
To successfully log on to your ISP, you will need to define a script to automatically execute the log on process
for you. The DIVA LAN ISDN Modem contains a pre-defined script that should work in the majority of cases.
However, you may need to modify this script for your installation.
To modify this script, you need to determine the sequence of events that occur when logging on to your ISP,
and the input that must be sent. For example:
Step 1: Your ISP issues the prompt “Login:” and expects you to send your user name, then press Enter.
Step 2: Your ISP issues the prompt “password:” and expects you to send your password, then press Enter.
For more information on scripting see Making a V.120 connection on page 127.
Item Description
Remote X.25 address The X.25 address of your ISP or the corporate network you want to connect to.
Local X.25 address The X.25 DTE address assigned to the DIVA LAN ISDN Modem. This may not be
required on some X.25 switches.
Default window size
Maximum window size
The DIVA LAN ISDN Modem supports windows sizes from 1 to 7.
Default packet size
Maximum packet size
The DIVA LAN ISDN Modem supports packet sizes from 64 to 1024 bytes.
Number of VCs Number of virtual circuits. The DIVA LAN ISDN Modem supports up to 4
two-way virtual circuits.
ISDN TEI type Determine if TEI assignment is static, dynamic, or shared. If static, get the number
assigned to the D-channel.
Item Description
Mode Two modes are supported: Unacknowledged or Multiframe.
Maximum transmit frame size
Maximum receive frame size
This is the maximum size of a V.120 information field that can be transmitted or
received. The DIVA LAN ISDN Modem supports frame sizes from 16 to 260 bytes.
Window size Applies to Multiframe mode only. The DIVA LAN ISDN Modem supports
windows sizes from 1 to 7.
Maximum retry count Applies to Multiframe mode only. Defines the maximum number of
retransmissions of an unacknowledged frame.
Retransmission timer (T200) Applies to Multiframe mode only. Defines how long to wait before retransmitting
an unacknowledged frame.
Link Integrity timer (T203) Applies to Multiframe mode only. Defines the maximum time the connection can
remain idle without data or control frames being exchanged.
Idle timer Defines the maximum time the connection can remain idle without data frames
being exchanged.
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