Multitech 810-FX Fax Machine User Manual

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Chapter4–ConfiguringYourMultiVOIP

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

Voice/FaxParameterDefinitions

FieldName Values Description

Default ‐‐ Whenthisbuttonisclicked,allVoice/FAXparametersaresettotheirdefaultvalues.

SelectChannel

1‐2(210)

1‐4(410)

1‐8(810)

Channeltobeconfiguredisselectedhere.

CopyChannel ‐‐

CopiestheVoice/FAXattributesofonechanneltoanotherchannel.Attributescanbecopied

tomultiplechannelsorallchannelsatonce.

VoiceGain ‐‐ Signalamplification(orattenuation)indB.

InputGain

+31dBto

–31dB

Modifiesaudiolevelenteringvoicechannelbeforeitissentoverthenetworktotheremote 

VOIP.Thedefault&recommendedvalueis0dB.

OutputGain

+31dBto

–31dB

Modifiesaudiolevelbeingoutputtothedeviceattachedtothevoicechanne l.Thedefault

andrecommendedvalueis0dB.

DTMFGain ‐‐

TheDTMFGain(DualToneMulti‐Frequency)controlsthevolumeleveloftheDTMFtones

sentoutforTouch‐Tonedialing.

DTMFGain,

HighTones

+3dBto

‐31dB&

“mute”

Defaultvalue:‐4dB.NottobechangedexceptundersupervisionofMulti‐TechTechnical

Support.

DTMFGain,Low

Tones

+3dBto

‐31dB&

“mute”

Defaultvalue:‐7dB.NottobechangedexceptundersupervisionofMulti‐TechTechnical

Support.

DTMFParameters



Duration(DTMF)

60–3000

ms

WhenDTMF:OutofBandisselected,thissettingdetermineshowlongeachDTMFdigit

‘sounds’orisheld.Default=100ms.

DTMF

In/OutofBand

Outof

Band,or

Inband

WhenDTMFOutofBandisselected,theMultiVOIPdetectsDTMFtonesatitsinputand

regeneratesthematitsoutput.WhenDTMFInbandisselected,theDTMFdigitsarepassed

throughtheMultiVOIPunitastheyarereceived.

OutofBandMode

RFC2833,

SIPInfo

RFC2833method.UsesanRTPmodedefinedinRFC2833totransmittheDTMFdigits.

SIPInfomethod.Generatesdualtonemultifrequency(DTMF)tonesonthetelephonycall

leg.TheSIPINFOmessageissentalongthesignalingpathofthe

call.

YoumustsetthisparameterperthecapabilitiesoftheremoteendpointwithwhichtheVOIP

communicates.TheRFC2833methodisthemorecommonofthetwomethods.

FAXParameters

FaxEnable Y/N Enablesordisablesfaxcapabilityforaparticularchannel.

ModemRelay

Enable

Y/N Whenenabled,modemtrafficcanbecarriedonVOIPsystem.Whendisabled,modemtraffic

bypassestheVOIPsystem(ModemBypassmode).

MaxBaudRate

(Fax)

2400,4800,

7200,9600,

12000,

14400bps

Settomatchbaudrateoffaxmachineconnectedtochannel(seeFaxmachine’suser

manual).

Default=14400bps.

FaxVolume

(Default=

‐9.5dB)

‐18.5dB

to–3.5dB



Controlsoutputleveloffaxtones.TobechangedonlyunderthedirectionofMulti‐Tech’s

TechnicalSupport.

JitterValue(Fax) Default=

400ms

Definestheinter‐arrivalpacketdeviation(inmilliseconds)forthefaxtransmission.Ahigher

valueincreasesthedelay,allowingahigherpercentageofpacketstobereassembled.A

lowervaluedecreasesthedelayallowingfewerpacketstobereassembled.

Mode(Fax) FRF11;

T.38

FRF11isframe‐relayFAXstandardusingthesecoders:G.711,G.728,G.729,G.723.1.

T.38isanITU‐TstandardforrealtimefaxingofGroup3faxesoverIPnetworks.ItusesT.30

faxstandardsandincludesspecialprovisionstoprecludeFAXtimeoutsduringIP

transmissions.

Tableiscontinuedonnextpage…



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Multitech 810-FX Fax Machine User Manual