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Message
"Network communication
has failed. The IP
address may be invalid.
Please check the network
settings."
"Network communication
has failed. The line has
been disconnected.
Please check the
destination and caller ID
notification setting."
"Network communication
has failed. The mail
address for
authentication does not
match with
administrator's one.
Please check the
settings."
• Change the current value to [1] under switch number [21] and bit number [6] in [Settings]
Settings]
[Detailed Initial Settings]
displaying the "Network communication has failed." message. Change the setting when you are
not using the IP-Fax or Internet Fax function.
• See "Changing the Parameter Settings", User Guide.
Condition
The settings in [SIP
Server IP Address] and
[Effective Protocol] do
not match.
An invalid IP address is
registered.
The destination
terminated the
communication.
When a signature is
specified, the SMTP
authentication e-mail
address or POP before
SMTP authentication e-
mail address does not
match the administrator
e-mail address.
[Parameter Setting]
When a Message Appears While Using the Fax Function
Solution and reference
Check that SIP Server IP Address in [Settings]
[Fax Settings]
[Detailed Initial Settings]
[IP-Fax Settings]
[SIP Settings] and
[Effective Protocol] on [Settings]
Settings]
[Network/Interface] are correct.
Specify the correct [Effective Protocol] and [IP
Address (IPv4)], or [IP Address (IPv6)] on
[Settings]
[System Settings]
Interface].
See "Connecting to a Wired LAN", User
Guide.
• Check that the destination is specified
correctly.
• If the destination refuses to receive a fax
with no sender information, enable
notifying of the information and send the
fax again.
Check that the authentication e-mail address
matches the address specified in [Settings]
[System Settings]
[Send (Email/Folder)]
[Email]
[Administrator's Email Address].
See "Send (Email/Folder)", User Guide.
[Parameter Setting] to disable
[System
[Network/
[Fax
391
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