Symptom

Cause

Solution

 

 

 

 

 

No connection.

Some of the system settings are not

Set the system settings correctly

 

 

 

 

correct.

referring to “Registering Local

 

 

 

 

 

Information” (page 36).

 

 

 

 

 

 

 

 

 

 

The IP address and network mask

Ask the system administrator to set

 

 

 

 

are not set correctly (when using

them correctly (page 45).

 

 

 

 

LAN).

 

 

 

 

 

 

 

 

 

 

 

The LAN or ISDN cable is

Connect correctly (pages 19, 20).

 

 

 

 

disconnected.

 

 

 

 

 

 

 

 

 

 

 

The LAN or ISDN cable is

Connect correctly (pages 19, 20).

 

 

 

 

connected to the incorrect

 

 

 

 

 

connector.

 

 

 

 

 

 

 

 

 

 

 

The LAN or ISDN cable is down.

Replace the cable with a new one.

 

 

 

 

 

 

 

 

 

 

The cable exclusively designed for

Use the cable for LAN connection.

 

 

 

 

the ISDN connection is used for

 

 

 

 

 

LAN connection (when using

 

 

 

 

 

LAN).

 

 

 

 

 

 

 

 

 

 

 

Incorrect type of cable (cross or

Use the correct type of cable.

 

 

 

 

straight cable) is used for the LAN

 

 

 

 

 

or ISDN connection.

 

 

 

 

 

 

 

 

 

 

 

The DSU is turned off.

Turn on the DSU.

 

 

 

 

 

 

 

 

 

 

If you disconnect the

Turn off the power of the system and

 

 

 

 

communication with an abnormal

wait for a few minutes before turning

 

 

 

 

procedure, e.g., unplugging an

it on again.

 

 

 

 

ISDN cable or turning off the

 

 

 

 

 

system during communication, you

 

 

 

 

 

may not connect to the ISDN line

 

 

 

 

 

for a while (when using ISDN).

 

 

 

 

 

 

 

 

 

 

 

If you repeat plugging/unplugging

Turn off the power of the system and

 

 

 

 

or turning on/off, you may not

wait for a few minutes before turning

 

 

 

 

connect to the network for a while

it on again.

 

 

 

 

(when using LAN).

 

 

 

 

 

 

 

 

 

 

 

LAN connection timeout (when

Try again later.

 

 

 

 

using LAN).

 

 

 

 

 

 

 

 

 

 

 

Packet for videoconferencing is not

Consult with the system administrator

 

 

 

 

acceptable under the current LAN

so that the packet for

 

 

 

 

environment (when using LAN).

videoconferencing becomes

 

 

 

 

 

acceptable under your LAN

 

 

 

 

 

environment.

 

 

 

 

 

 

 

 

 

 

The remote terminal is not turned

Ask the remote party to turn on the

 

 

 

 

on.

terminal.

 

 

 

 

 

 

 

 

 

 

It takes a long time for the remote

Ask the remote party to cancel the

 

 

 

 

party to be able to answer from the

standby mode.

 

 

 

 

standby mode.

 

 

 

 

 

 

 

 

 

 

 

The remote party is in

Call the remote party after they end

 

 

 

 

communication with another party.

the communication with another

 

 

 

 

 

party.

 

 

 

 

 

 

168

 

Troubleshooting