Fuji Xerox ApeosPort-V C7785 Administrator's Manual page 459

Symptom
IP fax (SIP) A large amount of
transmission communication data loss
takes long time. occurs because the
communication rates (10M/
100M/1000M) differ on two
sides of the network relay
device (such as a switch and
router).
A large amount of
communication data loss
occurs because the
communication parameters
(such as input gain, output
attenuation, echo setting) of
the VoIP gateway are
inappropriate for the network
environment.
IP fax (SIP) machine is
connected to the data
network where the telephone
and data networks are
operated separately.
Communications The priority of IP packet,
other than IP fax which is sent from the
(SIP) become slow machine, on the network
while IP fax (SIP) relay device (such as a switch
transmission is and router) becomes higher
executed. than necessary because the
QoS setting of the machine is
invalid.
Or, large amounts of buffer
space is occupied.
IP fax (SIP) machine is
connected to the telephone
network where the telephone
and data networks are
operated separately.
The image quality The document glass is dirty.
is poor.
The fax density is
inappropriate.
The sender's machine has a
problem.
Cause
Use the same communication speed within
the network.
Set appropriate communication parameters
on the VoIP gateway for your environment.
Configure the QoS setting for the entire
network environment and control traffic.
Set [Prioritize IP Packets] for QoS of the
machine.
For more information on [Prioritize IP Packets], refer to
"Prioritize IP Packets / Prioritize IP Packets (Ethernet 1),
Prioritize IP Packets (Ethernet 2)" (P.216).
Decrease the value for [Prioritize IP Packets]
according to your network environment.
For more information on [Prioritize IP Packets], refer to
"Prioritize IP Packets / Prioritize IP Packets (Ethernet 1),
Prioritize IP Packets (Ethernet 2)" (P.216).
Configure QoS setting for the entire network
environment and control traffic.
Set [Prioritize IP Packets] for QoS of the
machine.
For more information on [Prioritize IP Packets], refer to
"Prioritize IP Packets / Prioritize IP Packets (Ethernet 1),
Prioritize IP Packets (Ethernet 2)" (P.216).
Clean the document glass.
Refer to "Cleaning the Document Presser and Narrow
Glass Strip" (P.94).
Adjust the fax density.
Refer to "4 Fax" > "Fax/Internet Fax" in the User Guide.
Confirm with the sender.
Note
Trouble during Faxing
Remedy
• Image quality may be affected by a
problem of the sender's machine, not
just by a problem of the machine.
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