Feature Reference | DART 300 Modem |
3.+WPNEI=ip where ip is the NEI address to assign in
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.
4.+WPNEILIST to display the list and verify the new entry. Return to step 2 to make another account entry as desired.
5.+WS176=n where n is the NEI table entry you wish to automatically register (1 through 4).
6.+WS174=n where n indicates the channel side (A or B) assigned by your CDPD provider for the select account. Values for n are:
1 – A side preferred,
2 – B side preferred,
3 – A side only,
4 – B side only.
7.+WS173=1 to activate
At this point the modem starts to automatically acquire a CDPD channel and attempt to register the selected NEI. This process will continue until the modem is successful. During auto- registration, AT commands can still be issued and will be executed.
To use a different account when roaming to another region, execute steps 5 through 7 of the procedure above.
7.2. Controlling Network Registration
The modem must be registered on the CDPD network before communication with it can begin. Registering on the network is distinct from opening a session. This process involves an exchange of identification, authentication, encryption keys, and sleep characteristics.
Registration provides connectivity; “locating” the modem’s NEI (IP address) in the network topology so that routers can find it. The process of network registration is accomplished either automatically, or manually using AT commands (detailed in Section 7.2.2 below). Auto- registration is the factory default setting and is strongly recommended for most configurations.
For new NEI settings your CDPD service provider must have activated the NEI and reset the credentials
Registering on the network is distinct from opening a session. Registration simply confirms a connection to the network as a whole and authenticates your modem’s credentials with your CDPD carrier. Data Carrier Detect (DCD) is tied to sessions, not network registration. A session does not begin until you originate a (client) session or answer one (as a server).
The process involves two distinct steps: channel acquisition and registration (authentication).
7.2.1.Channel Acquisition
7.2.1.1.Channel Scanning
Normally the modem will automatically scan for the first usable CDPD channel and attempt to register. Whether or not it registers on that channel, it will quickly move to the best channel as it receives information on adjacent channels from the CDPD network. The CDPD specification defines the action the modem should take to acquire the strongest channel.
This search can be
Page 54 | 2110212 Rev 1.0 |
