Sony MP595 Instrukcja Użytkownika Pobierz pdf (Strona 72)

AirLink MP595 / MP595W Modem User Guide

66 2130795

Note: NetMotion Wireless, Inc.

develops client-server applica

tions that attempt to overcome

the issues caused by NAT

addressing by assigning its own

consistent private IP addresses.

This software offers a potential

solution to NAT issues, but it is

untested by Sierra Wireless, and

Sierra Wireless does not provide

support for it.

Solutions to the NAT problem

Ifyourservi ceproviderisusingNAT,itisbesttoworkwith

theproviderindevisingasolution.Someserviceproviders

offer,onrequest,accountswithpublicIPaddresses.(There

maybeadditionalchargesforthis.)

Anothersolutionistoimplementaframerelayconnection

betweenyournetworkandyourserviceprovider’snetwork.

Theframerelayconnectionbypassestheaddresstranslation,

andisamethodofovercomingNATissuesencouragedby

someserviceproviders.

Retrieve the Unique Mobile

Device ID

InordertoassociateGPSandI/Odatawithaparticular

vehicle,youmustcreateadatabaseonyourserverthatlinks

eachMPmodem’sUniqueMobileDeviceIDtothevehiclein

whichitisinstalled.TheUniqueMobileDeviceIDisanumber

derivedfromtheESN(ElectronicSerial

Number).

UsetheATcommandATI4toobtaintheUniqueMobileDevice

IDfromeachMPmodemyoudeploy.

Note: See “MP Modem

Manager” on page 11.

YoumayalsowanttoassignadevicenametotheMPmodem

thatidentifiesthevehicleinwhichitisinstalled.Youcan

assignthisnamelocallyusing3GWatcherorremotelyusing

MPModemManager.ThedevicenameisincludedintheMTP

datasenttothenetworkserver.

Network

Internet

Frame relay

Firewall

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