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User’s Guide SLIP/PPP Service
2110212 Rev 1.0 Page 83
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.
(AT is omitted for brevity):
1. Configure the modem’s NEI address and desired channel restrictions:
a. +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.
b. +WS174=n where n indicates the application of the channel side (A or B) assigned by
your CDPD provider. Values for n are:
1 – A side preferred,
2 – B side preferred,
3 – A side only,
4 – B side only.
c. Optionally configure desired cellular channel restrictions:
+WPSPNI=n[,n[,…n]] where n is a SPNI value and multiple values are separated by
commas. The list of parameters provided will replace any previous table. You cannot
append entries to an existing table. You may enter up to 10 values in the table. By
entering one or more SPNI values, the SPNI matching feature is automatically enabled.
2. Set the registration parameters and sleep mode as needed:
a. Optionally set manual registration mode. The default from the factory is to use automatic
registration. If manual registration is required set +WS173=0. If this is used, you may
also wish to set the Registration Wait Time with +WS198=n where n is the time in
seconds to allow the modem to register. The default is 30 seconds.
In PPP mode, the modem will automatically register when requested to go on-line if it
has not auto-registered earlier.
b. Optionally set the modem to use sleep mode. The default has sleep disabled (all settings
to 0).
+WS175=n where n is the idle time in seconds before CDPD sleep is engaged.
+WS31=1 to also apply Logic Sleep; or +WS31=2 to apply logic deep sleep.
3. +WS45=4 selects PPP service. The default from the factory is 3 - SLIP.
4. Optionally set +WS179=1 (Registration Wait Status) to have the modem only report
CONNECT after registration is successful. The modem default (+WS179=0) is to report
CONNECT and enter data state immediately, regardless of the registration status.
5. Set &D2 to ensure the modem will close the session if the DTR signal is lost.
6. Optionally disable the Ring Indicator (RI) signal using &I0.
7. Optionally make any settings required by the application for the DTE/DCE interface; items
such as: Echo, the default is on (E1); Quiet, the default is off (Q0); and Verbose, the default
is on (V1).
8. &W to save the configuration.
9. Set the data rate used by the application if it is not 19200 bps. Use +IPR=n where n is the
rate to use. The modem will preserve the new setting and reset after this command. The
modem will then re-start implementing the configuration as made in the steps above.
The modem may now be installed at the application site.