manualshive.com logo in svg

Zte WF821, User Manual, Page: 49 / 62

Share
Download
Zte WF821 User Manual Download Page 49

 

 

software

 

version

 

file.

 

3.

 

Click

 

Open

.

 

The

 

dialog

 

box

 

choses.

 

The

 

save

 

path

 

and

 

name

 

of

 

the

 

target

 

software

 

version

 

file

 

are

 

displayed

 

in

 

the

 

Update

 

file

 

field.

 

4.

 

Click

 

Submit

.

 

5.

 

The

 

software

 

upgrade

 

starts.

 

After

 

the

 

upgrade,

 

the

 

CPE

 

automatically

 

restarts

 

and

 

runs

 

the

 

new

 

software

 

version.

 

As

 

shown

 

in

 

Figure

 

8

‐

6.

 

During

 

an

 

upgrade,

 

do

 

not

 

power

 

off

 

the

 

CPE

 

or

 

disconnect

 

it

 

from

 

the

 

computer.

 

 

Figure 8‐6

 

8.3

 

TR069

 

TR

‐

069

 

is

 

a

 

standard

 

for

 

communication

 

between

 

CPEs

 

and

 

the

 

auto

‐

configuration

 

server

 

(ACS).

 

If

 

your

 

service

 

provider

 

uses

 

the

 

TR069

 

automatic

 

service

 

provision

 

function,

 

the

 

ACS

 

automatically

 

provides

 

the

 

CPE

 

parameters.

 

If

 

you

 

set

 

the

 

ACS

 

parameters

 

on

 

both

 

the

 

CPE

 

and

 

ACS,

 

the

 

network

 

parameters

 

on

 

the

 

CPE

 

are

 

automatically

 

set

 

using

 

the

 

TR

‐

069

 

function,

 

and

 

you

 

do

 

not

 

need

 

to

 

set

 

other

 

parameters

 

on

 

the

 

CPE.

 

To

 

configure

 

the

 

CPE

 

to

 

implement

 

the

 

TR

‐

069

 

function,

 

perform

 

the

 

following

 

steps:

 

1.

 

Choose

 

System

>

TR

‐

069

 

Settings

.

 

2.

 

Set

 

acs

 

URL

 

source

.

 

There

 

are

 

two

 

methods,

 

such

 

as

 

URL

 

and

 

DHCP

.

 

3.

 

In

 

the

 

ACS

 

URL

 

box,

 

enter

 

the

 

ACS

 

URL

 

address.

 

4.

 

Enter

 

ACS

 

user

 

name

 

and

 

password

 

for

 

the

 

CPE

 

authentication.

 

To

 

use

 

the

 

CPE

 

to

 

access

 

the

 

ACS,

 

you

 

must

 

provide

 

a

 

user

 

name

 

and

 

password

 

for

 

authentication.

 

The

 

user

 

name

 

and

 

the

 

password

 

must

 

be

 

the

 

same

 

as

 

those

 

defined

 

on

 

the

 

ACS.

 

5.

 

If

 

you

 

set

 

Periodic

 

inform

 

to

 

Enable

,

 

set

 

Periodic

 

inform

 

interval

.

 

Summary of Contents for WF821

Page 1: ...LTE Indoor CPE User Guide FCC ID SRQ WF821 ...

Page 2: ... 11 3 1 2 Network Mode 12 3 2 LTE Settings 12 3 2 1 Viewing Module Information 12 3 2 2 LTE Setting 13 3 2 3 Connect Method Setting 14 3 3 APN Management 17 3 3 1 APN Settings in NAT mode 17 3 3 2 APN list 18 3 4 PIN Management 19 3 4 1 Viewing the Status of the USIM Card 19 3 4 2 Enabling PIN Verification 19 3 4 3 Disabling PIN Verification 20 3 4 4 Verifying the PIN 20 3 4 5 Changing the PIN 20 ...

Page 3: ... 2 IP Filtering 35 5 2 1 Enabling IP Filtering 35 5 2 2 Disabling IP Filtering 35 5 2 3 Setting Allow access network outside the rules 36 5 2 4 Setting Deny access network outside the rules 36 5 2 5 Adding IP Filtering rule 36 5 2 6 Modifying IP Filtering rule 37 5 2 7 Deleting IP Filtering rule 38 5 3 URL Filtering 38 5 3 1 Enabling URL Filtering 38 5 3 2 Disabling URL Filtering 39 5 3 3 Adding U...

Page 4: ...nfiguration File 47 8 2 Version Manager 48 8 2 1 Viewing Version Info 48 8 2 2 Version Upgrade 48 8 3 TR069 49 8 4 Date Time 50 8 5 DDNS 52 8 6 Diagnosis 53 8 6 1 Ping 53 8 6 2 Traceroute 54 8 7 Syslog 55 8 7 1 Local 55 8 7 2 Network 56 8 8 Account 57 8 9 Remote WEB Access 58 8 10 Logout 59 9 FAQs 59 ...

Page 5: ...equirements Item Requirement CPU Pentium 500 MHz or higher Memory 128 MB RAM or higher Hard disk 50 MB available space Operating system Microsoft Windows XP Windows Vista Windows 7 or higher Mac Mac OS X 10 5 or higher Display resolution 1024 x 768 pixels or higher Browser Internet Explorer 7 0 or later Firefox 3 6 or later Opera 10 or later Safari 5 or later Chrome 9 or later 1 3Logging In to the...

Page 6: ...ed As shown in Figure 1 2 Figure 1 2 The default user name is admin and the default password is olo peru To protect your CPE from unauthorized access change the password after your first login The CPE supports diagnostic function If you encounter problems please contact customer service for the specific using method To ensure your data safety it is recommended that you turn on the firewall and con...

Page 7: ... the system status such as Running time and Online time As shown in Figure 2 1 Figure 2 1 2 2Viewing the Version Information To view the Version Information perform the following steps 1 Choose Overview 2 In the Version Information area view the version information such as Product name Software version UBoot version and so on As shown in Figure 2 2 Figure 2 2 ...

Page 8: ...age As shown in Figure 2 3 Figure 2 3 2 4Viewing Memory Usage To view the memory usage perform the following steps 1 Choose Overview 2 In the Memory Usage area view the memory usage information such as Total memory Current memory usage Max memory usage and Min memory usage As shown in Figure 2 4 Figure 2 4 2 5Viewing 4G Status To view the 4G status perform the following steps 1 Choose Overview ...

Page 9: ... shown in Figure 2 5 Figure 2 5 2 6Viewing LAN Status To view the LAN status perform the following steps 1 Choose Overview 2 In the LAN Status area view the LAN status such as Mac address IP address and Subnet mask As shown in Figure 2 6 Figure 2 6 2 7Viewing Wi Fi Status To view the Wi Fi status perform the following steps 1 Choose Overview ...

Page 10: ...owing steps 1 Choose Overview 2 In the WAN Status area view the wan status such as the DNS Current data rate and the APN status As shown in Figure 2 8 Figure 2 8 2 9Viewing Throughput Statistics To view the throughput statistics perform the following steps 1 Choose Overview 2 In the Throughput Statistics area view the throughput statistics such as WAN throughput and LAN throughput As shown in Figu...

Page 11: ... which connect to the CPE such as Device name Mac address IP address and Lease time As shown in Figure 2 10 Figure 2 10 3 Network 3 1 WAN Settings 3 1 1 WAN Interface To set the WAN interface perform the following steps 1 Choose Network WAN Settings 2 In the Network Mode area select an interface between LTE and Ethernet 3 Click Submit As shown in Figure 3 1 ...

Page 12: ...ween BRIDGE and NAT 3 Click Submit As shown in Figure 3 2 Figure 3 2 3 2 LTE Settings 3 2 1 Viewing Module Information To view the mobile module information perform the following steps 1 Choose Network LTE Settings 2 In the Module Information area you can view the information about the module such as module model module version IMEI As shown in Figure 3 3 ...

Page 13: ...ollowing steps 1 Choose Network LTE Settings 2 In the Setting area you can set the configuration of LTE network 3 In the LTE Settings area you can view the LTE network connect status such as Frequency RSSI RSRP RSRQ CINR SINR Cell ID and so on As shown in Figure 3 5 ...

Page 14: ...3 5 3 2 3 Connect Method Setting To set the connect method perform the following steps 1 Choose Network LTE Settings 2 In the Setting area Select a connect method between Auto and Manual As shown in Figure 3 6 ...

Page 15: ...t the CPE automatically connect to the internet perform the following steps 1 Choose Network LTE Settings 2 In the Setting area set the connect method as Auto when the LTE network is ready the CPE will be connected automaticity As shown in Figure 3 7 ...

Page 16: ...anual connect to the internet perform the following steps 1 Choose Network LTE Settings 2 In the Setting area set the connect method as Manual when the LTE network is ready you can set the CPE connect to the LTE network or disconnect from the LTE network As shown in Figure 3 8 ...

Page 17: ...Choose Network APN Management 2 In the APN Management area you can set the APN 3 Choose a APN number which you want to set 4 In the APN Setting area you can set the APN parameters such as enable or disable the apn apn name username password and so on 5 If you want set a APN as default gateway you should check that is enabled ...

Page 18: ...IP TR069 or VoIP TR069 7 Click Submit As shown in Figure 3 9 Figure 3 9 3 3 2 APN list To view the APN list perform the following steps 1 Choose Network APN Management 2 In the APN list area you can view the APN list As shown in the figure 3 11 Figure 3 11 ...

Page 19: ... 3 12 Figure 3 12 3 4 1 Viewing the Status of the USIM Card To view the status of the USIM card perform the following steps 1 Choose Network PIN Management 2 View the status of the USIM card in the USIM card status field 3 4 2 Enabling PIN Verification To enable PIN verification perform the following steps 1 Choose Network PIN Management 2 Set PIN verification to Enable 3 Enter the PIN 4 to 8 digi...

Page 20: ...d To change the PIN perform the following steps 1 Choose Network PIN Management 2 Set PIN verification to Enable 3 Set Change PIN to Enable 4 Enter the current PIN 4 to 8 digits in the PIN box 5 Enter a new PIN 4 to 8 digits in the New PIN box 6 Repeat the new PIN in the Confirm PIN box 7 Click Submit 3 4 6 Setting Automatic Verification of the PIN You can enable or disable automatic verification ...

Page 21: ... 5 1 Setting LAN Host Parameters By default the IP address is 192 168 1 1 with a subnet mask of 255 255 255 0 You can change the host IP address to another individual IP address that is easy to remember Make sure that IP address is unique on your network If you change the IP address of the CPE you need to access the web management page with the new IP address To change the IP address of the CPE pe...

Page 22: ...tings perform the following steps 1 Choose Network Setting LAN Settings 2 Set the DHCP server to Enable 3 Set Start IP address This IP address must be different from the IP address set on the LAN Host Settings area but they must be on the same network segment 4 Set End IP address This IP address must be different from the IP address set on the LAN Host Settings area but they must be on the same ne...

Page 23: ...ss and IP Address 4 Click Submit As shown in Figure 3 15 Figure 3 15 To modify an item in the setup list perform the following steps 1 Choose Network Setting LAN Settings 2 Choose the item to be modified and click Edit 3 Set the MAC address and IP Address 4 Click Submit As shown in Figure 3 16 Figure 3 16 To delete an item in the setup list perform the following steps 1 Choose Network Setting LAN ...

Page 24: ...ost address This IP address must be different from the IP address set on the LAN Host Settings page but they must be on the same network segment 5 Click Submit As shown in Figure 3 17 Figure 3 17 3 7Static Route 3 7 1 Add Static Route To add a static route perform the following steps 1 Choose Network Setting Static Route 2 Click Add list 3 Set the Dest IP address and Subnet mask 4 Select an Interf...

Page 25: ...Static Route 2 Choose the item to be modified and click Edit 3 Repeat steps 3 through 5 in the previous procedure 4 Click Submit As shown in Figure 3 19 Figure 3 19 3 7 3 Delete Static Route To delete a static route perform the following steps 1 Choose Security Static Route 2 Choose the item to be deleted and click Delete ...

Page 26: ...lowing table Parameter Value Description 802 11b g n The Wi Fi client can connect to the CPE in 802 11b 802 11g or 802 11n mode If the client connects to the CPE in 802 11n mode the Advanced Encryption Standard AES encryption mode is required 802 11b g The Wi Fi client can connect to the CPE in 802 11b or 802 11g mode 802 11b The Wi Fi client can connect to the CPE in 802 11b mode 802 11g The Wi F...

Page 27: ...ters It cannot be empty and the last character cannot be a blank character In addition the SSID cannot contain the following special characters The Wi Fi client connects to the CPE using the found SSID 3 Set Maximum number of devices This parameter indicates the maximum number of Wi Fi clients that connect to the CPE A maximum of 32 clients can connect to the CPE 4 Set Hide SSID broadcast to Enabl...

Page 28: ...can be entered in the Key 1 to Key 4 boxes 64bit Only 5 ASCII characters or 10 hex characters can be entered in the Key 1 to Key 4 boxes Current password index This value can be set to 1 2 3 or 4 After a key index is selected the corresponding key takes effect WPA PSK WPA PSK Only 8 to 63 ASCII characters or 8 to 64 hex characters can be entered WPA encryption This value can be set to TKIP AES AES...

Page 29: ...olicy The access policy can be set to Disable Blacklist or Whitelist If SSID s MAC Access is set to Disable access restrictions do not take effect If SSID s MAC Access is set to Blacklist only the devices that are not in the blacklist can connect to the CPE If SSID s MAC Access is set to Whitelist only the devices in the whitelist can connect to the CPE 3 Click Submit As shown in Figure 4 4 Figure...

Page 30: ... address take effect for the SSID 6 Click Submit As shown in Figure 4 6 Figure 4 6 To delete an item from the Wi Fi access list perform the following steps 1 Choose Wi Fi Access Management 2 Choose the item to be deleted and click Delete As shown in Figure 4 7 Figure 4 7 4 4 WDS The CPE supports the wireless distribution system WDS All Wi Fi devices in a WDS must be configured to use the same radi...

Page 31: ...o Auto you need to set the channel To configure the WDS perform the following steps 1 Choose Wi Fi WDS 2 Set WDS to Enable 3 Set WDS Mode as Repeater Mode 4 Click Scan From the search results choose the SSID of the networking device 5 Set Security WPA PSK can contain 8 to 63 ASCII characters or 64 hex characters 6 Click Submit As shown in Figure 4 8 Figure 4 8 5 Security 5 1MAC Filtering This page...

Page 32: ...igure 5 1 Figure 5 1 5 1 2 Disabling MAC Filter To disable MAC address filter perform the following steps 1 Choose Security MAC Filtering 2 Set MAC filtering to Disable 3 Click Submit As shown in Figure 5 2 Figure 5 2 5 1 3 Setting Allow access network within the rules To set allow access network within the rules perform the following steps 1 Choose Security MAC Filtering ...

Page 33: ...twork within the rules perform the following steps 1 Choose Security MAC Filtering 2 Set Deny access network within the rules 3 Click Submit As shown in Figure 5 4 Figure 5 4 5 1 5 Adding MAC Filtering rule To add a MAC filtering rule perform the following steps 1 Choose Security MAC Filtering 2 Click Add list 3 Set MAC address 4 Click Submit As shown in Figure 5 5 ...

Page 34: ...ring 2 Choose the rule to be modified and click Edit 3 Set MAC address 4 Click Submit As shown in Figure 5 6 Figure 5 6 5 1 7 Deleting MAC Filtering rule To delete a MAC address filter rule perform the following steps 1 Choose Security MAC Filtering 2 Choose the rule to be deleted and click Delete As shown in Figure 5 7 Figure 5 7 ...

Page 35: ...o enable IP Filtering perform the following steps 1 Choose Security IP Filtering 2 Set IP Filtering Enable 3 Click Submit As shown in Figure 5 8 Figure 5 8 5 2 2 Disabling IP Filtering To disable IP Filtering perform the following steps 1 Choose Security IP Filtering 2 Set IP Filtering Disable 3 Click Submit As shown in Figure 5 9 Figure 5 9 ...

Page 36: ...bmit As shown in Figure 5 10 Figure 5 10 5 2 4 Setting Deny access network outside the rules To set allow access network perform the following steps 1 Choose Security IP Filtering 2 Set Deny access network outside the rules 3 Click Submit As shown in Figure 5 11 Figure 5 11 5 2 5 Adding IP Filtering rule Add an IP address filtering rule perform the following steps 1 Choose Security IP Filtering ...

Page 37: ...or IP address segment to be filtered 8 In the Destination port Range box enter the destination port or port segment to be filtered 9 In the Status box choose a status the rule will be executed 10 Click Submit As shown in Figure 5 12 Figure 5 12 5 2 6 Modifying IP Filtering rule To modify an IP filtering rule perform the following steps 1 Choose Security IP Filtering 2 Choose the rule to be modifie...

Page 38: ...be deleted and click Delete As shown in Figure 5 14 Figure 5 14 5 3URL Filtering Data is filtered by uniform resource locator URL This page enables you to configure URL filtering rules 5 3 1 Enabling URL Filtering To enable URL Filtering perform the following steps 3 Choose Security URL Filtering 4 Set URL Filtering to Enable 5 Click Submit As shown in Figure 5 15 ...

Page 39: ...o Disable 3 Click Submit As shown in Figure 5 16 Figure 5 16 5 3 3 Adding URL Filtering list To add a URL filtering list perform the following steps 1 Choose Security URL Filtering 2 Click Add list 3 Set URL 4 Click Submit As shown in Figure 5 17 Figure 5 17 5 3 4 Modify URL Filtering list To modify a URL filtering rule perform the following steps ...

Page 40: ...address translation NAT is enabled on the CPE only the IP address on the WAN side is open to the Internet If a computer on the LAN is enabled to provide services for the Internet for example work as an FTP server port forwarding is required so that all accesses to the external server port from the Internet are redirected to the server on the LAN 5 4 1 Adding Port Forwarding rule To add a port forw...

Page 41: ...al port The port number ranges from 1 to 65535 8 Click Submit As shown in Figure 5 20 Figure 5 20 5 4 2 Modifying Port Forwarding rule To modify a port forwarding rule perform the following steps 1 Choose Security Port Forwarding 2 Choose the item to be modified and click Edit 3 Repeat steps 3 through7 in the previous procedure 4 Click Submit As shown in Figure 5 21 ...

Page 42: ...curity Port Forwarding 2 Choose the item to be deleted and click Delete As shown in Figure 5 22 Figure 5 22 5 5UPnP On this page you can enable or disable the Universal Plug and Play UPnP function To enable UPnP perform the following steps 1 Choose Security UPnP 2 Set UPnP to Enable 3 Click Submit As shown in Figure 5 23 ...

Page 43: ...ing area enable VPN 3 Select a protocol from Protocol drop down list 4 Enter Username and Password 5 Click Submit 6 You can view the status in VPN Status area As shown in Figure 6 1 Figure 6 1 7 VOIP The CPE supports voice services based on the Session Initiation Protocol SIP and enables voice service interworking between the Internet and Public Switched Telephone Networks PSTNs ...

Page 44: ...name box enter the domain name of the SIP server 4 In the Proxy server address box enter the address of the proxy server provided by your service provider for example 192 168 1 10 5 In the Proxy server port box enter the port of the proxy server provided by your service provider for example 5060 The value ranges from 1 to 65535 6 In the Registration server address box enter the address of the regi...

Page 45: ...count 2 Set SIP Account Enable 3 In the User name and Password boxes enter the user name and password of the SIP account provided by your service provider 4 In the Phone Number box enter the SIP Phone number provided by your service provider 5 In the Display Name box enter the display name provided by your service provider 6 In the Codec Priority area set the codec priority 7 Click Submit As shown...

Page 46: ...Reboot This function enables you to reboot the CPE Settings take effect only after the CPE reboot To reboot the CPE perform the following steps 1 Choose System Maintenance 2 Click Reboot As shown in Figure 8 1 The CPE then restarts Figure 8 1 ...

Page 47: ...ed dialog box select the save path and name of the configuration file to be backed up 4 Click Save As shown in Figure 8 3 The procedure for file downloading may vary with the browser you are using Figure 8 3 8 1 4 Upload Configuration File You can upload a backed up configuration file to restore the CPE To do so 1 Choose System Maintenance 2 Click Browse on the Maintenance page 3 In the displayed ...

Page 48: ...on info perform the following steps 1 Choose System Version Manager 2 In the Version Info area you can view the product name and software version As shown in Figure 8 5 Figure 8 5 8 2 2 Version Upgrade To perform an upgrade successfully connect the CPE to your computer through a network cable save the upgrade file on the computer and make sure the CPE is not connected to anything other than a powe...

Page 49: ...ion the ACS automatically provides the CPE parameters If you set the ACS parameters on both the CPE and ACS the network parameters on the CPE are automatically set using the TR 069 function and you do not need to set other parameters on the CPE To configure the CPE to implement the TR 069 function perform the following steps 1 Choose System TR 069 Settings 2 Set acs URL source There are two method...

Page 50: ...network the CPE regularly synchronizes the time with the specified Network Time Protocol NTP server If you enable daylight saving time DST the CPE also adjusts the system time for DST To set the date and time perform the following steps 1 Choose System Date Time 2 Select Set manually 3 Set Local time or click Sync to automatically fill in the current local system time 4 Click Submit As shown in Fi...

Page 51: ...list select a server as the primary server for time synchronization 4 From the Secondary NTP server drop down list select a server as the IP address of the secondary server for time synchronization 5 If you don t want to use other NTP server you need to enable Optional ntp server and set a server IP address 6 Set Time zone 7 Click Submit As shown in Figure 8 10 Figure 8 9 ...

Page 52: ...s 1 Choose System DDNS 2 Set DDNS to Enable 3 In Service provider choose DynDNS org or oray com 4 Enter Domain name and Host name For example if the domain name provided by your service provider is test customtest dyndns org enter customtest dyndns org as Domain name and test as Host name 5 Enter User name and Password 6 Click Submit As shown in Figure 8 12 Figure 8 10 ...

Page 53: ...ils to access the Internet run the ping command to preliminarily identify the problem To do so 1 Choose System Diagnosis 2 In the Method area select Ping 3 Enter the domain name in the Target IP or domain field for example www google com 4 Set Packet size and Timeout 5 Set Count 6 Click Ping As shown in Figure 8 13 Wait until the ping command is executed The execution results are displayed in the ...

Page 54: ...em To do so 1 Choose System Diagnosis 2 In the Method area select Traceroute 3 Enter the domain name in the Target IP or domain field For example www google com 4 Set Maximum hops ad Timeout 5 Click Traceroute As shown in Figure 8 14 Wait until the traceroue command is executed The execution results are displayed in the Results box ...

Page 55: ...tions and key running events 8 7 1 Local To set the syslog to local perform the following steps 1 Choose System Syslog 2 In the Setting area set the method to Local 3 In the Level drop down list select a log level 4 Click Submit As shown in Figure 8 15 ...

Page 56: ... display 8 7 2 Network To set the syslog to network perform the following steps 1 Choose System Syslog 2 In the Setting area set the method to Network 3 In the Level drop down list select a log level 4 In the Forward IP address box set a IP address 5 Click Submit As shown in Figure 8 16 The syslog will transmit to some client to display through network ...

Page 57: ...To change the password perform the following steps 1 Choose System Account 2 Select the user name if you want to change the password of normal user you need to set Enable User enable 3 Enter the current password set a new password and confirm the new password 4 New password and Confirm password must contain 5 to 15 characters 5 Click Submit As shown in Figure 8 17 ...

Page 58: ... protocol from WAN side 3 Set HTTP port If you want to change the login port you can set a new port in the box the default HTTP port is 80 4 Set HTTPS enable If you want to login the web management page with the HTTPS protocol from WAN side you need to enable the HTTPS 5 If you want to login the web management page form the WAN you need to Enable Allowing login from WAN 6 Set the HTTPS port 7 Clic...

Page 59: ...at the power adapter is compatible with the CPE Fails to Log in to the web management page Make sure that the CPE is started Verify that the CPE is correctly connected to the computer through a network cable If the problem persists contact authorized local service suppliers The CPE fails to search for the wireless network Check that the power adapter is connected properly Check that the CPE is pla...

Page 60: ...s overheated The CPE will be overheated after being used for a long time Therefore power off the CPE when you are not using it Check that the CPE is properly ventilated and shielded from direct sunlight The parameters are restored to default values If the CPE powers off unexpectedly while being configured the parameters may be restored to the default settings After configuring the parameters downl...

Page 61: ...harmful interference to radio communications However there is no guarantee that interference will not occur in a particular installation If this equipment does cause harmful interference to radio or television reception which can be determined by turning the equipment off and on the user is encouraged to try to correct the interference by one or more of the following measures Reorient or relocate ...

Page 62: ...talled and operated with a minimum distance of 20cm between the radiator and any part of your body The antennas must not be co located with other transmitter antennas The device can only operate indoor and can not operate in outdoor condition ...

Reviews:

No comments