Configuration and Use

8.UDP/TCP Service

8.1. Introduction

This section covers both UDP and TCP modes since both use very similar configurations. Given the same configuration, their operational behaviour will vary slightly based on the features of the specific protocol as described earlier.

There is a checklist of issues to ensure the configuration covers all required elements. It includes recommended settings for typical PAD installations as well as discussion of handling more complex implementations. You should be familiar with the features discussed above to understand and implement an appropriate configuration.

Sample configurations are included following the checklist. This will give you an idea of how specific issues were dealt with in some typical cases.

The section also includes a discussion of how to use the modem for client or server applications after configuration and installation.

8.2. Configuration Checklist for UDP/TCP Service

This section describes the issues to be covered in a PAD mode configuration by giving the recommended settings for simple installations. Optional settings for more complex installations are also discussed. Sample configurations follow in the next section.

This portion of the configuration is usually performed prior to installation at the application site. Settings are likely made manually using a terminal program on a PC. It is possible to write a script to execute the set-up repeatedly on a series of modems but the NEI must be unique on each modem and as assigned by the CDPD carrier.

Each subject area of the configuration is discussed in a sub-section below. The “AT” portion of commands is omitted for brevity.

8.2.1.NEI and Channel Restrictions

Set the CDPD parameters to enable the modem to access the CDPD network.

1.+WPNEI=ip where ip is the NEI address to assign. You do not need leading 0s in the individual elements of the address. When you press <enter> the modem will respond with a prompt to confirm the change in the table. The old and new values are both shown.

Press Y (case insensitive) to confirm the change, or

Press N (or any key other than Y) to cancel the command. The modem will respond with OK if the NEI is in a valid IP form.

This has presumed that you will be only entering 1 NEI. The default settings of the NEI indices are left at 1. If more than one NEI account is needed consult Section 7.1 above.

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Sierra Wireless DART 300 manual Configuration Checklist for UDP/TCP Service, NEI and Channel Restrictions