User's Guide

User’s Guide CSC Operation
2110059 Rev 1.1 Proprietary and Confidential Page 59
4. +WPNAM=num,sys,pref where num is the 10 digit phone number with area code and
without brackets, spaces, or dashes (i.e. 6042311100); sys is the Host System ID provided by
your cellular service provider; and pref is the numeric code for the side preference as shown
below:
0 – A side preferred,
1 – B side preferred,
2 – A side only,
3 – B side only,
4 – Home only.
When you press <enter> the modem will update the entry and respond OK. If the response is
ERROR then a parameter was out of range or the syntax was incorrect.
5. +WPNAM? to display the new entry and verify it is correct.
The NAM is now set and is active. If you wish to enter an alternate NAM then repeat the process
from step 2. The active NAM used by the modem for CSC connections will be the one indexed by
the +WS178 register when you are finished.
6.2.2. Confirm CSC Service
To ensure that your modem can make a cellular call:
1. +WS46=7 to ensure the modem is in CSC mode.
2. +WS178=n where n is the NAM entry you wish to use. This will make it the active NAM.
3. +WPNAM? to display the current entry and verify that it is the one to be used.
4. +WPRSSI to verify that you have acquired a channel and the NAM will register. The reply
to this command is in four lines:
Signal strength in dBm (-0 indicates no signal)
Channel state where 1 indicates scanning and 3 indicates an acquired channel
Registration state where 0 indicates your NAM is not registered, and 1 indicates registration
Channel number (0 indicates scanning).
Use A/ to repeat the RSSI query until your modem can find a channel and register the NAM.
If the modem fails to register the NAM on a channel after one minute then your NAM does
not likely have service in the coverage area.
When the RSSI reports the modem has registered the NAM:
5. ATDnum where num is a telephone number that you can call to detect a ring. This can be a
voice line at or near your workstation. The modem will dial the number and you should hear
the ring and see a ring indication reply on the host terminal application.
If you dial a destination modem set to auto-answer, the handshake should complete and the
connection result will be reported. You can terminate the connection normally.
6. If you call a line which does not answer, press any key to have the modem cancel the call and
return to command state or allow the dial command to timeout.