50
Troubleshooting
Q3: A call cannot be made
Problem
Cause
Remedy
A call cannot be originated.
An inappropriate IP address is entered.
Check the IP address of the other unit and
enter the correct IP address.
The IP address of the other unit has been
changed.
Check the IP address of the other unit and
enter the correct IP address.
The communication is blocked by a firewall.
Call by designating the IP address cannot
cross a firewall. If you want to change the
calling method to the SIP call, consult your
system administrator.
A network fault occurred.
Wait until the fault is released.
Consult your system administrator.
The connection mode settings of this unit and
the other unit are different.
A unit in the mesh connection mode cannot
communicate with a unit in a cascade
connection mode. Set the two units to the
same connection mode (page 27).
The IP/SIP settings of this unit and the other
unit are different.
A unit using the SIP address cannot
communicate with a unit using the IP
address. Enable or disable the SIP server
operation as required so that both units use
the same type of address (page 27).
The SIP address in the address book is
incorrect.
Register the correct SIP address (page 37).
The SIP server is not running.
Consult your system administrator.
The SIP address of the other unit is not
registered in the SIP server.
Consult your system administrator.
A call cannot be received.
An incorrect IP address is entered on the
other unit.
Enter the correct IP address on the other unit.
The communication is blocked by a firewall.
Call by designating the IP address cannot
cross a firewall. If you want to change the
calling method to the SIP call, consult your
system administrator.
A network fault occurred.
Wait until the fault is released.
Consult your system administrator.
