FujiFilm Apeos C7070 Reference Manual page 44

Symptom
Unable to communicate
(IP fax (SIP) via VoIP
gateway).
IP fax (SIP) transmission
takes a long time.
Communication/call,
other than IP fax (SIP)
communication, in the
network is slow when IP
fax (SIP) communication
is executed.
The image quality is poor.
44
2 Appendix
Register the correct VoIP gateway on the machine.
Confirm with your network administrator whether the VoIP gateway is
working properly.
Confirm with your network administrator whether the VoIP gateway
settings are correct.
The destination G3 fax machine is not working properly. The data
cannot be sent if the G3 fax machine of the recipient is turned off. Call
the recipient to confirm the machine condition.
Increase the value for [Prioritize IP Packets] of the machine according
to your network environment.
A large amount of communication data loss occurs because the queue
(buffer) assigned to each QoS of the network relay device (such as a
switch and router) is low.
Set an appropriate parameter on the network relay device for your
network environment.
A large amount of communication data loss occurs because the
communication rates differ within the network.
Use the same communication rate within the network.
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.
Set appropriate parameters on the VoIP gateway for your network
environment.
IP fax (SIP) machine is connected to the data network if the telephone
and data networks are operated separately. Configure the QoS setting
for the entire network environment and control traffic. Set [Prioritize
IP Packets] for QoS of the machine.
Decrease the value for [Prioritize IP Packets] of the machine according
to your network environment.
IP fax (SIP) machine is connected to the voice network if the telephone
and data networks are operated separately. Configure the QoS setting
for the entire network environment and control traffic. Set [Prioritize
IP Packets] for QoS of the machine.
The document glass of the sender's machine is dirty, or the resolution
setting on the sender's machine is set to low.
Check the machine condition with the sender.
During communication, image quality errors may be caused by a
problem with the sender's machine, not just by a problem of the
machine.
If the image quality is poor after printing, refer to "Image Quality
Trouble" (P.34).
The drum cartridge is damaged.
Copy a document. If the image quality is poor, replace the drum
cartridge with a new one.
Cause/Remedy