Sierra Wireless 20070914 Cell Phone User Manual


 
Introduction to the Raven
Rev 3.0B Feb.08 16
addressforyourmodem,youcanuseaDynamicDNSservice
(suchasIPManager)totranslateyourIPaddressintotoa
domainname.
Caution: If you want to connect remotely to your Raven using TCP/
IP, the IP address given to your modem by TELUS cannot be a private
or internal IP address (such asspecial private network) unless you are
on the same network or inside that network’s firewall (such as with
frame relay).
1x Communication
CDMA(CodeDivisionMultipleAccess)istheunderlying
digitalradionetworktechnologyusedbymanycellular
providersacrosstheglobeandisprevalentinNorthAmerica.
1xprovidesadigitalcellulartelephonysystemandcan
providewirelessInternetaccessatspeedsbetween60and80
kbps,withburstsupto144kbps.
Security
1xdatatransmissionsarehighlysecure.Originallydeveloped
baseduponthe“spreadspectrum”pioneeredbytheUS
DepartmentofDefense,securityinCDMAtechnologiesis
obtainedbyspreadingthedigitalinformationcontainedina
particularsignalofinterestovermultiplecodedpaths,overa
muchgreaterbandwidththantheoriginalsignal.