Sierra Wireless RJ-11 Network Card User Manual


 
Rev 3.0 B 2/29/08 3
1: Introduction
Host RJ-11 IP
Gateway Features
Manyexistingmeters,dataloggers,RTUʹs,PLCʹs,pointof
sale,andotherremotedevicesonlyhavephysicalinterfaces
designedtoaccessthetelephonenetwork.Theydonothave
serialorEthernetports.Theycurrentlyuseanalogcellularor
standardphonelinestoconnectincircuitswitchedmodefor
data
transfer.
Analogcellularphoneserviceisbeingdiscontinued.The
combinationoftheHostRJ11IPGateway,RJ11IPGateway
andaSierraWirelessAirLinkRavenwithEthernetport,
enablesremoteconnectivitybetweenhostapplicationsand
theseremotedevicesovercellularpacketdatanetworks.The
RJ11IPGatewayprovidesthe
bridgebetweenadevice
requiringanRJ11interfaceandtheRaven,withitsEthernet
interface.TheHostRJ11IPGatewaycanprovideEthernet
basedInternetconnectivitytoaLegacyHostsystemwithonly
RJ11ports.
Figure 1-1: Host RJ-11 Ethernet Connectivity for a Legacy Host
Host RJ-11 IP Gateway Features
OneRJ11phoneport
Thephoneportisaphonelinedesignedtofunctionjustlike
standardwalljackanalogphoneline.Itisdesignedprimarily
toconnectdialupdevices,withinternalmodems,totheRJ11
IPGateway,whichthenroutesdatafromthedevicesoverthe
network.TheRJ11IPGateway
andHostRJ11IPGateway
mimicsthephonecompany,answeringincomingcallsand