Case Communications 6904 User manual

Case Communications
6904 4G / LTE Dual SIM
Router Manual
6904 Manual Revision
Rev 1.20

Contents 1 Rev 1.19B
6904 3G/4G LTE Router Manual
Rev
Sect
Changes
1.19B
Index
Corrected index errors 8.5.2 which said ‘below’
3-4
Manual showing old user name ‘admin01’ & “password” - corrected
7-9
Wrong information password not subnetwork mask - corrected
8-5
Typo in 8.5.1 corrected
8-15
Typo in table section 7 - corrected
8-19
Typo in table section 11 –was ‘on’ should be ‘off’ corrected
1.20
8.52
Missing from contents now put back.

Contents 2 Rev 1.19B
6904 3G/4G LTE Router Manual
Contents
1.0 Introduction 1-1
2.0 Applications 2-1
3.0 Installation 3-1
4.0 Operating Modes 4-1
5.0 Powering Options 5-1
6.0 Status 6-1
6.1 Overview 6-1
6.2 System Information 6-2
6.3 Network Information 6-3
6.3.1.1 Mobile 6-3
6.3.1.2 WAN 6-4
6.3.1.3 LAN 6-5
6.3.1.4 Wireless 6-6
6.3.1.5 Associated Stations 6- 8
6.3.1.6 Open VPN Client 6-9
6.3.1.7 Open VPN Server 6-9
6.3.1.8 Client Information 6-10
6.3.1.9 VRRP 6-10
6.3.1.10 Topology 6-11
6.3.1.11 Access 6-11
6.3.1.11.1 Last Connection 6-12
6.4 Device Information 6-13
6.5 Services 6-14
6.6 Routes 6-14
6.6.1 ARP 6-14
6.6.2 Active IP-Routes 6-14
6.6.3 Active IPv6-Routes 6-15
6.7 Real-Time Graphs 6-16
6.7.1 Mobile Signal Strength 6-16
6.7.2 Real-Time Load 6-17
6.7.3 Traffic 6-18
6.7.4 Realtime Wireless 6-19
6.7.5 Realtime Connections 6-20
6.8 Mobile Traffic 6-21
6.9 Speed Test 6-21
6.10 Events Log 6-22
6.10.1 All Events 6-22
6.10.2 System Events 6-22
6.10.3 Network Events 6-23
6.10.4 Events Reporting 6-23
6.10.5 Reporting Configuration 6-24

Contents 3 Rev 1.19B
6904 3G/4G LTE Router Manual
7.0 Network 7-1
7.1 Mobile 7-1
7.1.1 General 7-1
7.1.2 SIM Management 7-3
7.1.3 Network Operators 7-4
7.1.4 Mobile Data Limit 7-4
7.1.5 SIM Idle protection 7-5
7.1.5.1 Settings 7-5
7.1.5.2 Test 7-6
7.2 WAN 7-7
7.2.1 Operating Mode 7-7
7.2.2 Common configuration 7-7
7.2.2.1 General Set Up 7-8
7.2.2.2.5 Backup WAN configuration 7-10
7.2.2.3 How do I set up a backup Link? 7-13
7.3 LAN 7-14
7.3.1 Configuration 7-14
7.3.2 DHCP Server 7-15
7.4 VLAN 7-17
7.4.1 VLAN Networks 7-17
7.4.2 LAN Networks 7-18
7.5 Wireless 7-19
7.5.1.1 Device 7-19
7.5.1.2 Interface 7-20
7.4.1.3 Client 7-21
7.6 Firewall 7-22
7.6.1 General Settings 7-22
7.6.2 DMZ 7-23
7.6.3 Port Forwarding 7-23
7.6.4 Traffic Rules 7-25
7.6.4.1 Open Ports on the router 7-27
7.6.4.2 New Forward Rule 7-28
7.6.4.3 Source NAT 7-28
7.6.5 Custom Rules 7-30
7.6.6 DDOS Prevention 7-31
7.6.6.1 SYN Flooding Protection 7-31
7.6.6.2 Remote ICMP Requests 7-31
7.6.6.3 SSH Attack Prevention 7-32
7.6.6.4 HTTP Attack Prevention 7-32
7.6.6.5 HTTPS Attack Prevention 7-33
7.7 Static Routes 7-34

Contents 4 Rev 1.19B
6904 3G/4G LTE Router Manual
8.0 Services 8-1
8.1 VRRP 8- 1
8.1.1 VRRP LAN Configuration settings 8-1
8.1.2 Check Internet connection 8-8.1.2
8.2 TR-069 8-2
8.2.1 TR-069 Parameters Configuration 8-2
8.3 Web Filtering 8-3
8.3.1 Site Blocking 8-3
8.3.2 Proxy based URL Content Blocker 8-3
8.4 NTP 8-4
8.5 VPN 8- 5
8.5.1 Open VPN 8-5
8.5.2 IP Sec 8-8
8.5.3 GRE Tunnel 8-10
8.5.4 PPTP 8-12
8.5.5 L2TP 8-13
8.6 Dynamic DNS 8-14
8.7 SNMP 8-16
8.7.1 SNMP Settings 8-16
8.7.2 Trap Settings 8-17
8.8 SMS Utilities 8-18
8.8.1 SMS Utilities 8-18
8.8.2 Calling Utilities 8-21
8.8.3 User Groups 8-21
8.8.4 SMS Management 8-22
8.8.1.1 Read SMS 8-22
8.8.1.2 Send SMS 8-22
8.8.1.3 Storage 8-22
8.8.5 Remote Configuration 8-23
8.8.5.1 Receive Configuration 8-23
8.8.5.2 Send Configuration 8-24
8.8.6 Statistics 8-26
8.9 SMS Gateway 8-27
8.9.1 Post / Get Configuration 8-27
8.9.1.1 SMS by HTTP POST / GET 8-27
8.9.1.2 Sytnax of HTTP / POST / GET String 8-28
8.9.1.3 Parameters of HTTP POST / GET string 8-28
8.9.1.4 Possible responses after command execution 8- 28
8.9.1.5 HTTP POST / GET String examples 8-28
8.9.2 Email to SMS 8-29
8.9.3 Scheduled Messages 8-30
8.9.4 Auto Reply Configuration 8-31
8.9.5 SMS Forward 8-31

Contents 5 Rev 1.19B
6904 3G/4G LTE Router Manual
8.5.6 SMPP 8-34
8.10 CLI 8-35
8.11 HOT SPOT 8-35
8.11.1 General Settings 8-36
8.11.2 Internet Access Restriction Settings 8- 37
8.11.3 Logging 8-37
8.11.4 Landing Page 8-38
8.11.5 Radius server configuration 8-39
8.11.6 Statistics 8-40
8.12 Auto Reboot 8-40
8.12.1 Ping Reboot 8-40
8.12.2 Periodic Reboot 8- 41
8.13 QOS 8-42
9 System 9-1
9.1 Configuration Wizard 8-1
9.2 Profiles 8-3
9.3 Administration 8-3
9.3.1 General 8-3
9.3.2 Troubleshooting 8-4
9.3.3 Backup 8-5
9.3.4 Diagnostics 9-8
9.3.5 MAC Clone 9-8
9.3.6 Overview 9-9
9.3.7 Monitoring 9-10
9.4 User Scripts 9-10
9.5 Safe Mode 9-11
9.6 Firmware 9-11
9.6.1 Firmware 9-11
9.6.2 FOTA 9-12
9.7 Restore Point 9-13
9.7.1 Create Restore Pont 9-13
9.7.2 Restore Point Load 9-13
9.8 Reboot 9-13
10 System Recovery 10-1
10.1 Reset Button 10-1
10.2 Safemode 10-1
10.3 Bootloaders Web GUI 10-1
11 Glossary 11-1

Safety 1 Rev 1.19B
6904 3G/4G LTE Router Manual
SAFETY INFORMATION
Legal notice
Copyright © 2014 Case Communications Ltd. All rights reserved. Reproduction, transfer,
distribution or storage of part or all of the contents in this document in any form without the
prior written permission of Case Communications is prohibited. The manufacturer reserves
the right to modify the product and manual for the purpose of technical improvement without
prior notice.
Other product and company names mentioned herein may be trademarks or trade
names of their respective owners.
Before using the device we strongly recommend reading this user manual first.
Do not rip open the device. Do not touch the device if the device block is broken
All wireless devices for data transferring may be susceptible to interference, which
could affect performance.
The device is not water-resistant. Keep it dry.
Device is powered by low voltage +9V DC power adaptor.

Page 1-1 Rev1.19B
6904 3G/4G LTE Router Manual
1Introduction
Thank you for purchasing a CASE6904 4G / LTE router!
The CASE6904 is part of the CASE range compact mobile routers with high speed wireless and
Ethernet connections.
This router is ideal for people who‘d like to share their internet on the go, as it is not restricted
by a cumbersome cable connection. Unrestricted, but not forgotten: the router still supports
internet distribution via a broadband cable, simply plug it in to the wan port, set the router to a
correct mode and you are ready to browse.

Page 2-1 Rev 1.19B
6904 3G/4G LTE Router Manual
2Specifications
Ethernet
IEEE 802.3, IEEE 802.3u standards
3 x LAN 10/100Mbps Ethernet ports
1 x WAN 10/100Mbps Ethernet port
Supports Auto MDI/MDIX
Wi-Fi
IEEE 802.11b/g/n Wi-Fi standards
2x2 MIMO
AP and STA modes
64/128-bit WEP, WPA, WPA2, WPA&WPA2 encryption methods
2.401 –2.495GHz Wi-Fi frequency range
20dBm max Wi-Fi TX power
SSID stealth mode and access control based on MAC address
Hardware
High performance 560 MHz CPU with 128 Mbytes of DDR2 memory
5.5/2.5mm DC power socket
Reset/restore to default button
2 x SMA for LTE , 2 x RP-SMA for Wi-Fi antenna connectors
4 x Ethernet LEDs, 1 x Power LED
1 x bi-Colour connection status LED, 5 x connection strength LEDs
Electrical, Mechanical & Environmental

Dimensions (H x W x D)
80mm x 106mm x 46mm

Weight
250g

Power supply
100 –240 VAC -> 9 VDC wall adapter

Input voltage range
9 –30 VDC

Power consumption
< 7 W

Operating temperature
-40° to 75° C

Storage temperature
-45° to 80° C

Operating humidity
10% to 90% Non-condensing

Storage humidity
5% to 95% Non-condensing

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6904 3G/4G LTE Router Manual
2.1. Applications

Page 3-1 Rev 1.19B
6904 3G/4G LTE Router Manual
3.0. Installation
After you unpack the box, follow the steps, documented below, in order to properly connect the
device. For better Wi-Fi performance, put the device in clearly visible spot, as obstacles such as
walls and door hinder the signal.
1. First assemble your router by attaching the necessary antennas and inserting the SIM
card.
2. To power up your router, please use the power adapter included in the box.
(IMPORTANT: Using a different power adapter can damage and void the warranty for
this product.).
3. If you have a wired broadband connection you will also have to connect it to the WAN
port of the router
3.1. Front and Back Panel of the Case 6904 Router
1,2,3
LAN Ethernet ports
1
LTE auxiliary antenna connector
4
WAN Ethernet port
2
LTE main antenna connector
5,6,7
LAN LEDs
3,5
Wi-Fi antenna connectors
8
WAN LED
4
Reset button
9
Power socket
10
Power LED
11
Connection status LED
12
Signal strength indication LEDs
3.2. Hardware installation
1. Remove back panel and insert SIM card which was given by your ISP (Internet
Service Provider). Correct SIM card orientation is shown in the picture.
SIM 1 (primary)
SIM 2 (secondary)
2. Attach LTE main and Wi-Fi antennas.
3. Connect the power adapter to the socket on the front panel of the device. Then plug
the other end of the power adapter into a wall outlet or power strip.
4. Connect to the device wirelessly using the SSID: Case6904 ) or use Ethernet cable and
plug it into any LAN Ethernet port.

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6904 3G/4G LTE Router Manual
3.3. Logging in
After you’re complete with the setting up as described in the section above, you are ready to
start logging into your router and start configuring it. This example shows how to connect on
Windows 7. On windows Vista: click Start -> Control Panel -> Network and Sharing Centre ->
Manage network Connections -> (Go to step 4). On Windows XP: Click Start -> Settings ->
Network Connections -> (see step 4). You wont’s see “Internet protocol version 4(TCP/IPv4)”,
instead you’ll have to select “TCP/IP Settings” and click options -> (Go to step 6)
We first must set up our network card so that it could properly communicate with the router.
1. Press the start button
2. Type in “network connections”, wait for the
results to pop up.
3.Click “View Network Connections
4. The right click on your wireless device that you use to
connect to other access points (It is the one with the
name “Wireless Network Connections” and has signal
bars on its icon)

Page 3-3 Rev 1.19B
6904 3G/4G LTE Router Manual
7. If you choose to configure manually here’s what you do:
First select an IP address.
The routers factory settings allow you to enter an IP address in the form of 192.168.1.XXX ,
where XXX is a number in the range of 2-254 (192.168.1.2 , 192.168.1.254 , 192.168.1.155 and
so on… are valid; 192.168.1.0 , 192.168.1.1 , 192.168.1.255 , 192.168.1.699 and so on… are
not).
Next enter the subnet mask: this has to be “255.255.255.0”. Then we enter the default gateway:
this has to be “192.168.1.1”. Finally we enter primary and secondary DNS server IPs. One will
suffice, though it is good to have a secondary one as well as it will act as a backup if the first
should fail. The DNS can be your routers IP (192.168.1.1), but it can also be some external
DNS server (like the one Google provides: 8.8.8.8).
5. Select Internet Protocol Version 4
(TCP/IPv4) and then click Properties.
6. By default the router is going to have DHCP
enabled, which means that if you select “Obtain
an IP address automatically” and “Obtain DNS
server address automatically”, the router should
lease you an IP and you should be ready to
login.

Page 3-4 Rev 1.19B
6904 3G/4G LTE Router Manual
Right click on the Wireless network icon and select Connect / Disconnect. A list should
pop up with all available wireless networks. Select “Case6904” and click connect. Then
we launch our favourite browser and enter the routers IP into the address field:
Press enter. If there are no problems you should be greeted with a login screen such as this:
Enter the default username, which is “root” into the user name field and enter ‘case’ into the
Password field and then either click Login with your mouse or press the Enter key. You have
now successfully logged into the CASE6904!
From here on out you can configure most parts of your 6904 router.

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6904 3G/4G LTE Router Manual
4. Operating Modes
The CASE6904 series router supports various operation modes. It can be connected to the
internet (WAN) via mobile, standard Ethernet cable or via a wireless network. When
connecting to the internet, you may also backup your main WAN connection with one or two
backup connections. Any interface can act like backup if configured so. At first router uses its
main WAN connection, if it is lost then router tries to connect via backup with higher priority
and if that fails too, router tries the second backup option.
WAN
Main WAN
Backup WAN
LAN
Mobile
√
√
x
Ethernet
√
√
√
Wi-Fi
√
√
√
In later sections it will be explained, in detail, how to configure your router to work in a
desired mode.

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6904 3G/4G LTE Router Manual
5. Powering Options
The CASE6xx router can be powered from power socket or over Ethernet port. Depending on
your network architecture you can use LAN 1 port to power the device.
The CASE 6904 can be powered from power socket and over Ethernet simultaneously. Power
socket has higher priority meaning that the device will draw power from power socket as long
as it is available.
When the CASE 6904 is switching from one power source to the other it loses power for a
fraction of the second and may reboot. The device will function correctly after the reboot.
Though the device can be powered over Ethernet port it is not compliant with IEEE 802.3af-
2003 standard. Powering CASE6309 from IEEE 802.3af-2003 power supply will damage the
device as it is not rated for input PoE Standard voltages.
5.1 Powering the device from higher voltage
If you decide not to use our standard 9 VDC wall adapters and want to power the device from
higher voltage (15 –30 VDC) please make sure that you choose power supply of high quality.
Some power supplies can produce voltage peaks significantly higher than the declared output
voltage, especially during connecting and disconnecting them.
While the device is designed to accept input voltage of up to 30 VDC peaks from high voltage
power supplies can harm the device. If you want to use high voltage power supplies it is
recommended to also use additional safety equipment to suppress voltage peaks from power
supply. One of the options is to use “Case Communications” over-voltage protection device
conforming ISO 7637-2

Page 6-1 Rev 1.19B
6904 3G/4G LTE Router Manual
6. Status
The status section contains various information, like current IP addresses of various network
interfaces; the state of the routers memory; firmware version; DHCP leases; associated wireless
stations; graphs indicating load, traffic, etc.; and much more.
6.1. Overview
Overview sections contains summary information on the router

Page 6-2 Rev 1.19B
6904 3G/4G LTE Router Manual
6.2. System Information
The System Information tab contains data that pertains to the routers operating system.
System explanation:
Field Name
Sample value
Explanation
1.
Router Name
Case Communications
Name of the router (hostname of the routers system). Can
be changed in System -> Administration.
2.
Host name
Case Communications
Indicates how router will be seen by other devices on the
network. Can be changed in System -> Administration.
3.
Router Model
Case Communications
CASE6xx
Routers model.
4.
Firmware
Version
CASE6xx_T_00.00.372
Shows the version of the firmware that is currently loaded
in the router. Newer versions might become available as
new features are added. Use this field to decide whether
you need a firmware upgrade or not.
5.
Kernel
Version
3.10.36
The version of the Linux kernel that is currently running on
the router.
6.
Local Time
2014-11-03, 14:33:14
Shows the current system time. Might differ from your
computer, because the router synchronizes it's time with an
NTP server. Format
[year-month-day, hours:minutes:seconds].
7.
Uptime
0h 40m 46s (since
2014-11-03, 13:53:13)
Indicates how long it has been since the router booted up.
Reboots will reset this timer to 0.Format [day’s hours
minutes seconds (since year month-day, hours: minutes:
seconds)].
8.
Load
Average
1 min: 11%; 5 mins:
18%; 15 mins: 17%
Indicates how busy the router is. Let's examine some
sample output: "1 min: 11%, 5 mins: 18%, 15 mins: 17%".
The first number mean past minute and second number
11% means that in the past minute there have been, on
average, 11% processes running or waiting for a resource.
9.
Temperature
Device’s temperature

Page 6-3 Rev 1.19B
6904 3G/4G LTE Router Manual
Memory explanation:
Field Name
Sample Value
Explanation
1.
Free
94532 kB / 126452 kB
(74%)
The amount of memory that is completely free.
Should this rapidly decrease or get close to 0, it
would indicate that the router is running out of
memory, which could cause crashes and
unexpected reboots.
2.
Cached
10828 kB / 126452 kB
(8%)
The size of the area of memory that is dedicated to
storing frequently accessed data.
3.
Buffered
4308 kB / 126452 kB
(3%)
The size of the area in which data is temporarily
stored before moving it to another location.
6.3. Network Information
6.3.1.1. Mobile
Displays information about the modems connections

Page 6-4 Rev 1.19B
6904 3G/4G LTE Router Manual
Field Name
Sample Value
Explanation
1.
Data
connection
state
Connected
Mobile data connection status
2.
IMEI
860461024164561
Modem's IMEI (International Mobile Equipment
Identity) number
3.
IMSI
246020100070220
IMSI (International Mobile Subscriber Identity)
is used to identify the user in a cellular network
4.
SIM card state
Ready
Indicates the SIM card's state, e.g. PIN required,
Not inserted, etc.
5.
Signal strength
-65 dBm
Received Signal Strength Indicator (RSSI).
Signal's strength measured in dBm
6.
Cell ID
FD90B
ID of operator cell that device is currently
connected to
7.
RSRP
-88dBm
Indicates the Reference Signal Received Power
8.
RSRQ
-7dBm
Indicates the Reference Signal Received Quality
9.
SINR
-21.4dBm
Indicates the Signal to Interference Noise Ratio
10.
Operator state
LT BITE GSM
Operator's name of the connected GSM network
11.
Operator
Registered (home)
GSM network's status
12.
Connection
type
4G (LTE)
Indicates the GSM network's access technology
13.
Bytes received
3.3 Kb (3345 bytes)
How many bytes were received via mobile data
connection
14.
Bytes sent
3.4 kb (3487 bytes)
How many bytes were sent via mobile data
connection
6.3.1.2. WAN
Displays information about the WAN Connection