Sierra Wireless RJ-11 Network Card User Manual


 
Rev 3.0 B 2/29/08 29
Figure 2-6: Host RJ-11 IP Gateway: Phone Number Translation Passerelle IP
RJ-11 : Conversion des numéros de téléphone
TheDefaultTranslationentryisusedifthedialedphone
numberisnotfoundinthelist.(Thedialbackupnumberisnot
usedintheHostRJ11IPGateway.)Thephonenumbertable
hasanumberoffeaturestoeaseinitialconfiguration.Whenan
attacheddevicedialsanumber
thatisnotinthetable,the
deviceservercreatesadummyentryinthetable.Thisentry
willconsistofjustthephonenumber.Untilyoufillinthe
remainderoftheentry(IPAddress/HostnameandPort)and
saveit,thisentrywillnotbeused.
Onceyouhavecreatedandsavedanentryinthetable,alink
totheassociatedentryontheProtocolSettingspageappears
ontheright.Iftheprotocolisnotyetdefined,thislink,“Define
protocol”,willcreateanewentryontheProtocolSettings
page,otherwisethelinkwill
be“Editprotocol”.
Thetranslationtablescreenallowsyoutoaddupto5new
entriesatatime.Atotalof64entriesmaybeconfigured
includingthedefaultentry.
Intheexampleabove,iftheattacheddevicedials18005551212,
theportwillbeconnectedtothehostat192.168.13.100onTCP
port5004.Thishostisnotyetdefined,soitwillusethedefault
TCPprotocol.Iftheattacheddevicedialsanyothernumber,
theportwillbeconnected
todefault.eairlink.com:5003,whose
protocolisdefined.Andtheterminalhasactuallydialed555
1212,generatinganautomatic,butnotyetsaved,entry.
Network Translation
TheHostRJ11IPGatewayiscapable ofaccepting incoming
TCPconnectionsandredirectingthemtoremoteTCPhosts.
Thisfunctionalityiscallednetworktranslationandbehaves
muchlikeaTCP“pipe”betweentwosystems.TheHostRJ11
IPGatewayalsousesNetworkTranslationtoallowconnec
tionstothewebbaseinterfaceonaportotherthanthehttp
protocoldefinedportof80whichisfrequentlyblockedby
cellularcarriers.