Sierra Wireless DART 300 manual Automatic Registration, Manual Registration

Feature Reference DART 300 Modem

In summary, the Auto-register NEI Index value will follow the Active NEI Index value if there is an attempt to register manually. The Active NEI Index can change freely and is not influenced by changes in the Auto-register NEI Index.

7.2.2.2.Automatic Registration

This is the default setting from the factory and is highly recommended.

The modem can be set to register the NEI indexed by +WS176 (Auto-register NEI Index) automatically. Register +WS173 (Registration Mode) controls this feature. When the mode register is set to 1 the modem will immediately attempt to register and will subsequently attempt to register automatically on start-up or reset.

The default setting of the modem from the factory is to auto-register NEI index 1 (both registers set to 1). The modem will always retain changes to both registers without the need to save the settings explicitly (&W). Whenever the modem is reset or power-cycled it will resume operation with the last-used settings.

Automatic registration will retry indefinitely, scanning for a new channel each time, should attempts fail.

Setting the Registration Mode to 0 will de-register the current NEI if it successfully auto- registered earlier.

7.2.2.3.Manual Registration

When the modem is set for manual registration (+WS173=0) it will not attempt to locate a CDPD channel until commanded to register (+WPREG or a dial command D) or the command to set a channel (+WPCHAN) is set to 0 (automatic selection). As noted in the previous section, you may select a channel first in network diagnostic situations. If you do not force automatic channel selection by setting +WPCHAN=0, the modem will scan for one when the registration command is issued.

To register an NEI manually:

1.+WS197=n where n is the index to the NEI you wish to register.

2.+WPREG to register the NEI. If the NEI is currently registered the modem takes no action and returns the registration result code. Otherwise, the modem will:

•De-register any currently registered NEI

•Acquire a channel if necessary (and if not forced to a specific channel)

•Attempt to register the NEI and authenticate credentials

The modem will terminate the process on one of three conditions:

•Success – The modem will give the REGISTERED response, then the OK result code.

•Failure – The CDPD network failed to register the NEI for reasons given in the response (i.e. INSUFFICIENT_CREDENTIALS), followed by the OK result code.

•Time-out – The register +WS198 (Registration Wait Time) allows settings from 1 to 255 seconds (default 30) for the registration process. If this time elapses without successful registration the modem will return the TIMEOUT_EXPIRED response, then the OK result code.

7.2.2.4.Determining Registration Status

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).

DART 200

The DART 200 allowed the DCD and DSR control signals to be configured to track registration. The DART 300 does not support configuration of DCD or DSR.

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