Specifications

withaparticulardigitlength,forexample8digits.Thiswayyoucancapturecallsto
localareanumbersornationalnumberswithoutrequiringaprefix.
● Callsfromextension group – Rather thanspecifyingindividualextensions, you can
selectanextensiongroup.
3. Now specify how outbound calls matching the criteria should be handled. In the “Make
outboundcallson”section,selectuptothreeroutesforthecall.Eachdefinedgatewayor
provider will be listed as a possible route. If the first route is not available or busy, 3CX
PhoneSystemwillautomaticallytrythesecondroute.
4. Youcantransformthenumberthatmatchestheoutboundrulebeforethecallisroutedtothe
selectedgatewayorproviderusingthe“Stripdigits”and“Prepend”fields:
● Stripdigits–Allowsyoutoremoveoneormoredigitsfromthecallednumber.Use
this to remove the prefix before it is dialled on the gateway or provider if it is not
required. In theexample above, you would specify to remove onedigit, in order to
removetheprefix“9”beforeitisdialled.
● Prepend–Allowsyoutoaddoneormoredigitsatthebeginningofthenumberifthis
isrequiredbytheproviderorgateway.
5. You can configure these options per outbound rule, since a rule that applies to a VoIP
gateway connected to the local PSTN would normally require different criteria than a rule
thatappliestoaVoIPprovider.
Acompleteexampleshowinghowtocreateanoutboundrulein3CXPhoneSystemcanbefound
athttp://www.3cx.com/blog/voiphowto/outboundrulesacompleteexample/.
CreatingDIDNumbers/InboundRules
Manycompaniesprovideusersand/ordepartmentswith“DirectorDIDnumbers”,whichallowtheir
contacts to call them directly, bypassing the receptionist. DID numbers are referred to as DDI
numbers in the United Kingdom and as MSN numbers in Germany. Even if you make use of a
digital receptionist, a direct line / number is often preferable because it’s more convenient for the
caller.
ConfiguringDIDNumbers
Directdialnumbersareeasilyimplementedusing“InboundRules”.DIDnumbersareprovidedby
your VoIP provider or Phone Company and are virtual numbers assigned to your physical lines.
Usuallyyouareassignedarangeofnumbers,whichislinkedtoanexistingBRI/T1/E1.Therewill
beanextrachargepernumberorperrange,butthiswillbeafractionofthecostofaddingphysical
lines.EnquirewithyourPhoneCompanyorVoIPproviderformoreinformationaboutDIDnumbers.