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Chapter6—UsingtheSoftware

128 MultiVOIP®Voice/FaxoverIPGateways

DownloadingIFMFirmware

TheInterfaceModule(IFM)isthetelephonyinterfaceforanalogMultiVOIPunits.ThereisoneIFMforeach

channeloftheMultiVOIPunit.Foreachchannel,theIFMhandlestheanalogsignalstoandfromtheattached

telephone,PBXorCOline.

TheIFMcommunicateswiththemainprocessortoindicate

thestatusofthetelephoneline.Forexample,it

mightindicatethataphon e isoffhook(FXS)orthatanincomingringispresent(FXO).

TheIFMreceivesoperatinginstructionsfromtheVOIP’smainprocessor.Forexample,theIFMmightbe

instructedtoringthephone(FXS)orseize

theline(FXO).TheIFMcontainsacodec(coder/decoder)toconvert

theincomingaudiotoaPCMstream(pulsecodemodulation)whichitsendstotheDSP(digitalsignalprocessor).

TheIFM’scodecalsoconvertsoutgoingPCMtoaudio.

ThefirmwareoftheIFMscanchangeovertime.Assuch,you

mayneedtoupgradethefirmware.Toupgrade

firmware:

1. IntheSystemInformationwindowoftheMultiVOIPConfigurationsoftware,checktheversionnumberof

theIFMfirmwarealreadyinstalledontheMultiVOIP unit.Writedowntheversionnumber.

2. ExittheConfigurationsoftwareprogram.TheMultiVOIPConfigurationprogrammustbeoffwheninvoking

theDownloadIFMFirmwarecommand.Ifitison,thecommanddoesnotwork.

3. TousetheDownloadIFMFirmwarecommand, gotoStart|Programs|MultiVOIPx.xx|DownloadIFM

Firmware.

4. Adialogboxopens.ClickOK.



5. The“Boot”LEDonthefrontpaneloftheMultiVOIPcomeson.

6. ThesoftwaresearchesforanIFMfirmwarefiletousetou pgradethesystem.Ifthefilefoundrepresents

firmwarenewerthanthatalreadyinstalledontheMultiVOIP(orifyouwanttooverwritethesameversion

offirmware)clickOpen.

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Multitech MVP 800 Specifiche Pagina 128