Ericsson W35 Router Manual PDF (Setup & Configuration Guide)

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Troubleshooting

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What to do

application or specific type of data

applications.

that the ALG supporting the

Internet application is enabled.

If the application requires UPnP

IDG, check that

UPnP IDG

is

enabled on the

NAT

page.

A port forwarding rule might be

required for a specific application.

See section 3.7.3 –

Port

Forwarding.

7.4.1

Change TCP Settings

To achieve maximum performance on the Internet connection some

parameters in the TCP/IP stack of the client PC can be changed. These

kinds of settings are hidden in the Windows registry, but there are some

tools that give user friendly access to them, for example “TCP Optimizer”,

http://www.speedguide.net/downloads.php

The following TCP settings are recommended to optimize the performance:

TCP Receive Window = 146000

Selective ACK:s = Yes

Max Duplicate ACK:s = 2

RFC1323 TCP Window Scaling = Yes (enabled)

Note:

Windows Vista and recent versions of Linux kernels have

automatic window scaling enabled by default and should not need

any TCP tweaking.

7.5

Wireless LAN Connection

Table 27 – Wireless LAN

Indication/Symptom

What to do

Cannot access the local network

from a wireless device.

Check that the WLAN

indicator

on the front panel of the Ericsson

W3x is on. If not, connect an

Ethernet cable between the PC and

the Ericsson W3x to establish a

connection and enable the wireless

LAN (disabled in the default

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Indication/Symptom

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configuration).

Verify that the Wireless LAN

interface installed on the wireless

client is active.

Keep the Ericsson W3x away from

electrical devices that disturb the

radio signals, for example

microwave ovens. Try to move the

Ericsson W3x to another location,

but make sure that the mobile

network signal is still acceptable

before finalizing the installation.

Make sure that your Ericsson W3x

network does not use the same

radio channel as other wireless

devices, for example security

systems. The radio channel is

displayed on the

Wireless LAN

page. To avoid interference, let the

Ericsson W3x select a channel

automatically (

Auto

).

Verify that the network name

(SSID) on the Ericsson W3x and

the wireless client are the same.

Note that the network name is

case-sensitive.

Verify that the operating system

and Wireless LAN interface of the

client supports the authentication

and encryption method (WEP-64,

WEP-128, WPA, or WPA2)

configured on the Ericsson W3x.

These settings are displayed on the

Wireless LAN

web page. If the

security method is not supported in

the client, configure the Ericsson

W3x to use another method.

For the configured security method,

make sure that the same

encryption key or passphrase is

configured on both the Ericsson

W3x and the client. Note that a

passphrase is case sensitive.

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If whitelist is enabled, verify that the

wireless client is included on this

list.

If the wireless client uses a static IP

address, make sure that this IP

address is on the same subnet as

the Ericsson W3x. The IP address

and subnet mask for the Ericsson

W3x is displayed on the

LAN

page.

7.6

Access to Shared Files or Printer

If you cannot access a shared storage device or printer connected to the

USB connector on the Ericsson W3x, take the following action to identify

and solve the problem:

•

Check that the USB device is detected by the system by looking on the

Event Log

web page. Connect the USB device, wait a few seconds

and click the

Refresh

button. Make sure the “Display” list box is set to

“All”. Move to the bottom of the log using the scroll bar on the right. If

your USB device is recognized you will se some lines like the example

below:

Jan

1 00:07:29 FWT user.info kernel: usb 1-3: new high speed

USB device using ehci_hcd and address 4

Jan

1 00:07:29 FWT user.info kernel: scsi0 : SCSI emulation for

USB Mass Storage devices

Jan

1 00:07:34 FWT user.notice kernel:

Vendor:

Model: USB DISK Pro

Rev: PMAP

Jan

1 00:07:34 FWT user.notice kernel:

Type:

Direct-Access

ANSI SCSI revision: 00

Jan

1 00:07:35 FWT user.notice kernel: SCSI device sda: 4013056

512-byte hdwr sectors (2055 MB)

Jan

1 00:07:35 FWT user.notice kernel: sda: assuming Write

Enabled

Jan

1 00:07:35 FWT user.err kernel: sda: assuming drive cache:

write through

Jan

1 00:07:35 FWT user.notice kernel: SCSI device sda: 4013056

512-byte hdwr sectors (2055 MB)

Jan

1 00:07:35 FWT user.notice kernel: sda: assuming Write

Enabled

Jan

1 00:07:35 FWT user.err kernel: sda: assuming drive cache:

write through

Jan

1 00:07:35 FWT user.info kernel:

sda1

Jan

1 00:07:35 FWT user.notice kernel: Attached scsi removable

disk sda at scsi0, channel 0, id 0, lun 0

•

Restart the Ericsson W3x.

•

Disconnect the USB device from the Ericsson W3x, and then reconnect

it.

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•

Make sure that the PC belongs to the same workgroup as the Ericsson

W3x. For instructions, see section 6.3.1 –

Check Workgroup Settings

.

The Ericsson W3x workgroup is displayed on the

Sharing

web page.

•

If you have problems accessing a printer, make sure that the printer

drivers are correctly installed on the PC.

7.7

Telephony and Fax Service (W35 only)

Note:

The telephony and the fax services will work without any further

configurations but must be supported by the subscription/network

in order to work. If you are unsure, check with your service

provider.

Table 28 – Telephony and Fax Service

Indication/Symptom

What to do

Cannot make or receive a call from

a telephone connected to the

Ericsson W35.

Make sure that the phone is

working, for example by connecting

it to a fixed line telephone network

(PSTN). The phone has to be of a

standard touch tone type (with

DTMF keypad support).

Note:

Some old phones have a

keypad, although they do not

support DTMF. These phones are

consequently not supported by the

Ericsson W35.

The phone must be connected to

the

Phone

connector on the

Ericsson W35. Verify that a dial

tone is heard when picking up the

handset. If not, replace the handset

and restart the Ericsson W35. Allow

some two minutes for the startup

and then listen for the information

tone again

If an information tone other than the

dial tone is heard when lifting the

handset verify that the SIM card is

correctly inserted, re-enter the PIN,

or enter the PUK and a new PIN to

unlock the SIM card. The method to

use depends on the type of

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information tone. For information

about tones, see section 4.2 –

Information Tones

.

Cannot send or receive on a fax

connected to the Ericsson W35

Make sure that the fax is connected

to the

Phone/Fax

connector on the

Ericsson W35.

Check that the Internet

LED

is on and on the LAN page that the

Ericsson W35 has received an IP

address. The data service is a

prerequisite for the fax service, see

section 7.4 –

Internet Access

for

troubleshooting the data service.

Make sure that the fax is working,

for example by connecting it to a

fixed line telephone network

(PSTN).

Messages regarding fax status and

failures are shown on the fax.

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