Specifications

extensionnumber.Youcanconfiguretheemailaddressofthedefaultvirtualfaxextension
fromthe“FaxMachines”node>“888”–3CXFaxServer.
4. Alternatively you can forward incoming faxes to the email address configured for a user’s
extension.ThisallowsyoutocreatemultipleDIDrulesandgivepersonalfaxnumbers.
ConfiguringFaxMachines/FaxServers
The“Faxmachines”nodeinthemanagementconsolelistsallknown“Faxextensions”including
the extension used by the 3CX Fax Server. These “Fax extensions” are similar to a normal
extensionandrequireanauthenticationIDandpasswordtologintotheSIPserver.
3CXPhoneSystemincluded a preconfigured fax extension (ext:888).Thisextensionisused by
the 3CX Fax Server for incoming fax calls, which will then be routed to an email address. In
addition, 3CX Phone System can be configured to proxy fax calls (T38 traffic) to a fax machine
connected to an ATA or another software based T38 fax server, by creating additional fax
extension.
FaxExtensionSettings
FaxExtension
Tocreateanewfaxextension:
1. Inthe3CXManagementConsole,select“Faxmachines”>“AddFaxExtension”.
2. Inthe“FaxServerExtensionNumber”field,specifythefaxextensionnumber.Anycalls
forwardedtothisextensionwillbeassumedtobeafaxandreceiveafaxtone.
3. SpecifytheFaxServerAuthenticationIDandPassword–Thesecredentialswillbeusedby
theATA/3
rd
partyfaxservertologintothe3CXPhoneSystem.
4. Ifthisextensionisusedbythe3CXFaxServer,youcanspecifythedefaultemailaddressto
whichallfaxesshouldbesent.
5. IfthisextensionisusedforanATAor3
rd
partyT38faxsoftware,theextensionwillbeused
onlytoregistertotheSIPserverandreceiveT38faxtraffic.Note:Youmustrestartthefax
serviceforchangestotakeeffect.
ConnectingFaxMachinesUsinganATA
OnceyouhaveconfiguredthefaxextensionyoumustconnectthefaxmachinetoasupportedATA
deviceandconfiguretheATAdevicetoconnecttothefaxextension.Seethislinkforastepbystep
guide:http://www.3cx.com/docs/configurefaxmachinewith3cx/