2348 CHAPTER 135: FAX OVER IP CONFIGURATIONn VoFR entities only support the PPP training mode.Configuring a Fax LocalTraining ThresholdWhen rate training is carried on between facsimile terminals, the transmittingterminal transmits “zero-filled” TCF data (the filling time per packet is 1.5±10%seconds) to the receiving facsimile terminal, and the receiving facsimile terminaldecides whether the current rate is acceptable according to the received TCF data.When the percentage of all-ones or all-zeros TCF data to the total number of TCPdata is less than the local training threshold, the current rate training succeeds.Otherwise, the current rate training fails and you need to drop the rate for a localtraining again.Configuration prerequisitesVoIP configuration is completed, IP calls can be made successfully, and faxmachines are connected correctly.Configuration procedureFollow these steps to configure a fax local training threshold:n When the local training mode is adopted, use the fax local-train thresholdcommand to configure the threshold. When the PPP training mode is adopted, thegateway does not participate in rate training and the fax local training threshold isnot applicable.Configuring TransmitEnergy Level ofGateway CarrierUsually, the default transmit energy level of the gateway carrier is acceptable. Ifthe fax cannot be set up yet on the condition that other configurations are correct,you can attempt to adjust the transmit energy level of the gateway carrier.Enter voice entity view entity entity-number { pots| vofr | voip }-Configure a fax trainingmodefax train-mode { local |ppp }RequiredThe ppp training is adopted.To do... Use the command... RemarksTo do... Use the command... RemarksEnter system view system-view -Enter voice view voice-setup -Enter voice dial program view dial-program -Enter voice entity view entity entity-number{ pots | vofr | voip }-Configure the fax training mode aslocal trainingfax train-mode local RequiredBy default, the PPP training isadopted.Configure a fax local trainingthresholdfax local-trainthreshold thresholdRequiredBy default, the threshold is10.
