Specifications

Provider”
2. The3CXPhoneSystemwillpromptyoutoconductaFirewallTest.Frequently,theinternet
facing firewall sitting between 3CX Phone System and the VoIP provider is not correctly
configuredorisnotabletocorrectlyrouteVoIPtraffic.Tocheckthefirewallconfiguration,it
isimportanttoperformafirewallcheckusingtheinbuiltfirewallchecker.
● Click “Run Firewall Checker”. It will use the STUN server configured in “Settings” >
“Network”>“STUNServer”
● EnsurethatyourfirewallallowsandcorrectlyroutesconnectionsonPort5060(forSIP)and
Ports9000–9099(forRTPAudio)tothePBX.Ifthefirewallchecksfail,youwillnotbeable
to reliably make and receive VoIP provider calls and you will have to edit your firewall
configuration.
Aftersuccessfullycompletingthetest,returntotheVoIPProviderWizard.
Note:3CXdoesnotprovidespecificfirewallconfigurationsupport.
AddVoIPProviderAccount
3. EnterafriendlynameforthisVoIPprovideraccount.
4. SelecttheCountrythattheVoIPprovideroperatesin.
5. SelectyourVoIPProviderfromtheProviderdropdownlist.
● Iftheproviderisnotlisted,select“GenericVoIPprovider”,or“GenericSIPTrunk”,(Ifusinga
genericproviderwewillnotbeabletoguaranteethat3CXwillworkwiththisVoIPprovider),
Click“Next”.
6. TheSIPserver hostnameorIPmaybe prefilled.Comparethesewiththedetailsthatyou
havereceivedfromyourVoIPproviderandcheckthattheseareindeedcorrect.Depending
ontheVoIPproviderthatyouareusing,somefieldswillbedisabled.Thismeansyoudonot