Message Condition Solution and reference
"Network communication
has failed. SIP digest
authentication failed.
Please check the SIP
digest authentication user
name and password."
The authentication
password on the SIP
server and the
password registered on
the machine do not
match.
Check that the password registered on the SIP
server and "Password" in SIP Digest
Authentication under [Settings] [Fax
Settings] [Detailed Initial Settings] [IP-
Fax Settings] [SIP Settings] match.
See "Sending Documents by IP-Fax", User
Guide (Full Version).
"Network communication
has failed. The certificate
of destination is not
currently valid. Please re-
issue it."
The user certificate
(destination certificate)
has expired.
Install a new user certificate.
"Encrypting Network Communication", Security
"Network communication
has failed. The certificate
of this machine is not
currently valid. Please re-
issue it."
A device certificate
(destination certificate)
is not registered or has
expired.
Install a new device certificate.
"Encrypting Network Communication", Security
"Network communication
has failed. The certificate
of this machine or
destination machine is
not currently valid.
Please re-issue it."
The user certificate
(destination certificate)
and device certificate
have expired.
Install a new user certificate and device
certificate.
"Encrypting Network Communication", Security
"Network communication
has failed. The
destination does not
support IP-FAX."
An IP-Fax was sent to a
destination that does not
support IP-Fax.
Sending a fax using the IP-Fax function is not
possible. Send the fax using the G3 line if
possible.
"Network communication
has failed. The IP
address is invalid. Please
check the network
settings."
An invalid IP address is
registered.
Specify the correct [Effective Protocol] and [IP
Address (IPv4)], or [IP Address (IPv6)] on
[Settings] [System Settings] [Network/
Interface].
See "Connecting to a Wired LAN", User Guide
(Full Version).
When a Message Appears While Using the Fax Function
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