3Com MSR 50 Series, Руководство по настройке

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2348 C
HAPTER
135: F
AX OVER
IP C
ONFIGURATION
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VoFR entities only support the PPP training mode.
Configuring a Fax Local
Training Threshold
When rate training is carried on between facsimile terminals, the transmitting
terminal transmits “zero-filled” TCF data (the filling time per packet is 1.5±10%
seconds) to the receiving facsimile terminal, and the receiving facsimile terminal
decides 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 TCP
data 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 local
training again.
Configuration prerequisites
VoIP configuration is completed, IP calls can be made successfully, and fax
machines are connected correctly.
Configuration procedure
Follow these steps to configure a fax local training threshold:
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When the local training mode is adopted, use the fax local-train threshold
command to configure the threshold. When the PPP training mode is adopted, the
gateway does not participate in rate training and the fax local training threshold is
not applicable.
Configuring Transmit
Energy Level of
Gateway Carrier
Usually, the default transmit energy level of the gateway carrier is acceptable. If
the 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 training
mode fax train-mode { local |
ppp }
Required
The ppp training is adopted.
To do... Use the command... Remarks
To do... Use the command... Remarks
Enter 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 as
local training fax train-mode local Required
By default, the PPP training is
adopted.
Configure a fax local training
threshold fax local-train
threshold
threshold
Required
By default, the threshold is
10.