Comtrend VR-3031U Users Manual
VR-3031u
Multi-DSL Router
User Manual
Version A2.1, June 04, 2013
261099-019
Preface
This manual provides information related to the installation and operation of this
device. The individual reading this manual is presumed to have a basic
understanding of telecommunications terminology and concepts.
If you find the product to be inoperable or malfunctioning, please contact technical
support for immediate service by email at INT-support@comtrend.com
For product update, new product release, manual revision, or software upgrades,
please visit our website at http://www.comtrend.com
Important Safety Instructions
With reference to unpacking, installation, use, and maintenance of your electronic
device, the following basic guidelines are recommended:
x Do not use or install this product near water, to avoid fire or shock hazard. For
example, near a bathtub, kitchen sink or laundry tub, or near a swimming pool.
Also, do not expose the equipment to rain or damp areas (e.g. a wet basement).
x Do not connect the power supply cord on elevated surfaces. Allow it to lie freely.
There should be no obstructions in its path and no heavy items should be placed
on the cord. In addition, do not walk on, step on, or mistreat the cord.
x Use only the power cord and adapter that are shipped with this device.
x To safeguard the equipment against overheating, make sure that all openings in
the unit that offer exposure to air are not blocked.
x Avoid using a telephone (other than a cordless type) during an electrical storm.
There may be a remote risk of electric shock from lightening. Also, do not use
the telephone to report a gas leak in the vicinity of the leak.
x Never install telephone wiring during stormy weather conditions.
CAUTION:
To reduce the risk of fire, use only No. 26 AWG or larger
telecommunication line cord.
Always disconnect all telephone lines from the wall outlet before servicing
or disassembling this equipment.
WARNING
Disconnect the power line from the device before servicing.
Power supply specifications are clearly stated in Appendix C -
Specifications.
1
Copyright
Copyright©2013 Comtrend Corporation. All rights reserved. The information
contained herein is proprietary to Comtrend Corporation. No part of this document
may be translated, transcribed, reproduced, in any form, or by any means without
prior written consent of Comtrend Corporation.
This program is free software: you can redistribute it and/or modify it under the
terms of the GNU General Public License as published by the Free Software
Foundation, either version 3 of the License, or (at your option) any later version.
This program is distributed in the hope that it will be useful, but WITHOUT ANY
WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
FOR A PARTICULAR PURPOSE. See the GNU General Public License for more
details.
You should have received a copy of the GNU General Public License
along with this program. If not, see http://www.gnu.org/licenses/
NOTE: This document is subject to change without notice.
Protect Our Environment
This symbol indicates that when the equipment has reached the end of
its useful life, it must be taken to a recycling centre and processed
separate from domestic waste.
The cardboard box, the plastic contained in the packaging, and the parts that make
up this router can be recycled in accordance with regionally established regulations.
Never dispose of this electronic equipment along with your household waste; you
may be subject to penalties or sanctions under the law. Instead, please be
responsible and ask for disposal instructions from your local government.
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Table of Contents
CHAPTER 1 INTRODUCTION........................................................................................................... 6
CHAPTER 2 INSTALLATION............................................................................................................. 7
2.1 H
ARDWARE SETUP...........................................................................................................................7
2.2 LED I
CHAPTER 3 WEB USER INTERFACE ............................................................................................ 11
3.1 D
3.2 IP C
3.3 L
CHAPTER 4 DEVICE INFORMATION........................................................................................... 16
4.1 WAN ............................................................................................................................................. 17
4.2 S
4.3 R
4.4 ARP...............................................................................................................................................27
4.5 DHCP............................................................................................................................................27
4.6 NAT S
4.7 IGMPP
4.8 IP
NDICATORS.............................................................................................................................9
EFAULT SETTINGS ....................................................................................................................... 11
ONFIGURATION........................................................................................................................ 12
OGIN PROCEDURE........................................................................................................................14
TATI ST IC S .....................................................................................................................................18
4.2.1 LAN Statistics..................................................................................................................18
4.2.2 WAN Service ...................................................................................................................19
4.2.3 XTM Statistics................................................................................................................. 20
4.2.4 xDSL Statistics ................................................................................................................21
OUTE ........................................................................................................................................... 26
ESSION ................................................................................................................................29
ROXY ................................................................................................................................30
V6 ..............................................................................................................................................31
4.8.1 IPv6 Info ................................................................................................................................ 31
4.8.2 IPv6 Neighbor .......................................................................................................................32
4.8.3 IPv6 Route .............................................................................................................................33
4.8.4 Network Map .........................................................................................................................34
CHAPTER 5 BASIC SETUP............................................................................................................... 35
AY ER 2INTERFACE ......................................................................................................................35
5.1 L
5.1.1 WAN Service Setup ................................................................................................................ 36
5.2 NAT ..............................................................................................................................................37
5.2.1 Virtual Servers ................................................................................................................37
5.2.2 Port Triggering ...............................................................................................................38
5.2.3 DMZ Host .......................................................................................................................40
5.2.4 IP Address Map ..............................................................................................................41
5.2.5 IPSEC ALG..................................................................................................................... 43
5.2.6 SIP ALG..........................................................................................................................44
5.3 LAN .............................................................................................................................................. 45
5.3.1 LAN IPv6 Autoconfig............................................................................................................. 48
5.3.2 Static IP Neighbor .................................................................................................................51
5.3.3 UPnP .....................................................................................................................................52
IRELESS...................................................................................................................................... 53
5.4 W
5.4.1 Basic ...................................................................................................................................... 53
5.4.2 Security..................................................................................................................................55
CHAPTER 6 ADVANCED SETUP..................................................................................................... 58
UTO-DETECTION SETUP ............................................................................................................... 58
6.1 A
ECURITY ...................................................................................................................................... 63
6.2 S
6.2.1 IP Filtering .....................................................................................................................63
6.2.2 MAC Filtering.................................................................................................................67
ARENTAL CONTROL......................................................................................................................69
6.3 P
6.3.1 Time Restriction .............................................................................................................. 69
6.3.2 URL Filter.......................................................................................................................71
UALITY OF SERVICE (QOS)..........................................................................................................73
6.4 Q
6.4.1 QoS Queue Setup............................................................................................................74
6.4.2 QoS Policer ....................................................................................................................76
6.4.3 QoS Classification ..........................................................................................................78
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6.5 R
OUTING .......................................................................................................................................80
6.5.1 Default Gateway............................................................................................................. 80
6.5.2 Static Route..................................................................................................................... 81
6.5.3 Policy Routing ................................................................................................................82
6.5.4 RIP..................................................................................................................................83
6.6 DNS.............................................................................................................................................. 84
6.6.1 DNS Server .....................................................................................................................84
6.6.2 Dynamic DNS .................................................................................................................85
6.6.3 DNS Entries ....................................................................................................................86
6.6.4 DNS Proxy/Relay ............................................................................................................ 87
6.7 DSL...............................................................................................................................................88
OME NETWORKING .....................................................................................................................90
6.8 H
6.8.1 Print Server ...........................................................................................................................90
6.8.2 DLNA..................................................................................................................................... 91
6.8.3 Storage Service...................................................................................................................... 92
NTERFACE GROUPING ...................................................................................................................93
6.9 I
6.10 IPT
UNNEL...................................................................................................................................96
6.10.1 IPv6inIPv4........................................................................................................................... 96
6.10.2 IPv4inIPv6........................................................................................................................... 98
ERTIFICATE ................................................................................................................................99
6.11 C
6.11.1 Local............................................................................................................................... 99
6.11.2 Trusted CA .................................................................................................................... 101
OWER MANAGEMENT .............................................................................................................. 102
6.12 P
ULTICAST................................................................................................................................ 103
6.13 M
IRELESS ..................................................................................................................................105
6.14 W
6.14.1 Basic .................................................................................................................................. 105
6.14.2 Security..............................................................................................................................107
6.14.3 MAC Filter......................................................................................................................... 110
6.14.4 Wireless Bridge.................................................................................................................. 111
6.14.5 Advanced ........................................................................................................................... 113
CHAPTER 7 DIAGNOSTICS...........................................................................................................116
IAGNOSTICS –INDIVIDUAL TESTS .............................................................................................116
7.1 D
AULT MANAGEMENT.................................................................................................................. 117
7.2 F
PTIME STATU S ........................................................................................................................... 118
7.3 U
ING ............................................................................................................................................ 119
7.4 P
RACE ROUTE .............................................................................................................................120
7.5 T
YSTEM UTILIZATION ..................................................................................................................121
7.6 S
CHAPTER 8 MANAGEMENT ........................................................................................................122
8.1 S
ETTINGS.....................................................................................................................................122
8.1.1 Backup Settings.............................................................................................................122
8.1.2 Update Settings............................................................................................................. 123
8.1.3 Restore Default............................................................................................................. 123
YSTEM LOG ...............................................................................................................................124
8.2 S
8.3 SNMPA
8.4 TR-069 C
NTERNET TIME ........................................................................................................................... 129
8.5 I
8.6 A
GENT ............................................................................................................................. 126
LIENT ........................................................................................................................... 127
CCESS CONTROL .......................................................................................................................130
8.6.1 Passwords.........................................................................................................................130
8.6.2 Service Access................................................................................................................... 132
8.6.3 IP Address.........................................................................................................................133
PDATE SOFTWARE .....................................................................................................................134
8.7 U
EBOOT .......................................................................................................................................135
8.8 R
CHAPTER 9 LOGOUT ..................................................................................................................... 136
APPENDIX A - FIREWALL .............................................................................................................137
APPENDIX B - PIN ASSIGNMENTS .............................................................................................. 140
APPENDIX C - SPECIFICATIONS................................................................................................. 141
APPENDIX D - SSH CLIENT ..........................................................................................................143
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APPENDIX E- CONNECTION SETUP .......................................................................................... 144
APPENDIX F - WPS EXTERNAL REGISTRAR........................................................................... 173
APPENDIX G - PRINTER SERVER ...............................................................................................176
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Chapter 1 Introduction
The VR-3031u is an 802.11n compliant Multi-DSL router that supports both ADSL2+ and
VDSL2. The latter is a brand new standard and technology perfect for triple play (Video,
Voice and Data) applications. The VR-3031u comes with four 10/100 Base-T Ethernet
ports, and one USB host, combining wired LAN connectivity and an integrated 802.11n
WiFi WLAN Access Point (AP) for wireless connectivity.
The VR-3031u is a cost effective solution designed to meet the needs of ISPs and carriers
planning on deploying a single DSL device for covering end users in different loop range areas.
Deploying VR-3031u is cost effective for ISPs and carriers because deploying a single CPE
DSL device with multiple profile support minimizes the number of required upgrades.
6
Chapter 2 Installation
2.1 Hardware Setup
Follow the instructions below to complete the hardware setup.
Non-stackable
This device is not stackable – do not place units on top of each other, otherwise
damage could occur.
BACK PANEL
The figure below shows the back panel of the device.
Power ON
Press the power button to the OFF position (OUT). Connect the power adapter to the
power port. Attach the power adapter to a wall outlet or other AC source. Press the
power button to the ON position (IN). If the Power LED displays as expected then
the device is ready for setup (see section 2.2 LED Indicators).
Caution 1: If the device fails to power up, or it malfunctions, first verify that the
power cords are connected securely and then power it on again. If the
problem persists, contact technical support.
Caution 2: Before servicing or disassembling this equipment, disconnect all power
cords and telephone lines from their outlets.
Reset Button
Restore the default parameters of the device by pressing the Reset button for 10
seconds. After the device has rebooted successfully, the front panel should display
as expected (see section 2.2 LED Indicators for details).
NOTE: If pressed down for more than 60 seconds, the VR-3031u will go into a
firmware update state (CFE boot mode). The firmware can then be
updated using an Internet browser pointed to the default IP address.
7
WPS/WiFi Button
Press and release WPS-WiFi button to activate WPS (make sure the WPS is enabled
in Wireless->Security page).
Press and hold WPS-WIFI button more than 5 seconds to enable/disable WiFi.
Ethernet (LAN) Ports
Use 10/100 BASE-T RJ-45 cables to connect up to four network devices. These ports
are auto-sensing MDI/X; so either straight-through or crossover cable can be used.
USB Host Port (Type A)
This port can be used to connect the router to the print server.
DSL Port
Connect to an ADSL2/2+ or VDSL with this RJ11 Port. This device contains a micro
filter which removes the analog phone signal. If you wish, you can connect a
regular telephone to the same line by using a POTS splitter.
8
2.2 LED Indicators
The front panel LED indicators are shown below and explained in the following table.
This information can be used to check the status of the device and its connections.
LED Color Mode Function
Green
POWER
Red On
ETH 1 to 4 Green
WLAN Green
WPS Green
USB
DSL Green
INTERNET
Green
Red On USB dongle attached, connection is DOWN.
Green
On The device is powered up.
Off The device is powered down.
POST (Power On Self Test) failure or other
malfunction. A malfunction is any error of internal
sequence or state that will prevent the device from
connecting to the DSLAM or passing customer data.
On An Ethernet Link is established.
Off An Ethernet Link is not established.
Blink Data transmitting or receiving over LAN.
On The wireless module is ready.
(i.e. installed and enabled).
Off
Blink Data transmitting or receiving over WLAN.
On WPS enabled and PC connected to WLAN.
Off
Blink The router is searching for WPS clients or WPS is
On USB mass storage, USB hub or USB printer is
Off No USB device connected.
On xDSL Link is established.
Off xDSL Link is not established.
Blink fast: xDSL Link is training or data transmitting.
On IP connected and no traffic detected. If an IP or
The wireless module is not ready.
(i.e. either not installed or disabled).
WPS disenabled when WPS configured.
After clients are connected to router for about 5
minutes, LED is OFF.
un-confi
connected; or
slow: xDSL training failed.
PPPoE session is dropped due to an idle timeout, the
light will remain green if an ADSL connection is still
present.
gured.
USB dongle connection is UP.
9
Off Modem power off, modem in bridged mode or ADSL
g
Blink IP connected and IP Traffic is passing thru the device
Red On
connection not present. In addition, if an IP or
PPPoE session is dropped for any reason, other than
an idle timeout, the li
(either direction)
Device attempted to become IP connected and failed
(no DHCP response, no PPPoE response, PPPoE
authentication failed, no IP address from IPCP, etc.)
ht is turned off.
10
Chapter 3 Web User Interface
This section describes how to access the device via the web user interface (WUI)
using an Internet browser such as Internet Explorer (version 5.0 and later).
3.1 Default Settings
The factory default settings of this device are summarized below.
x LAN IP address: 192.168.1.1
x LAN subnet mask: 255.255.255.0
x Administrative access (username: root, password: 12345)
x User access (username: user, password: user)
x Remote (WAN) access (username: support, password: support)
x WLAN access: enabled
Technical Note
During power on, the device initializes all settings to default values. It will then
read the configuration profile from the permanent storage section of flash memory.
The default attributes are overwritten when identical attributes with different values
are configured. The configuration profile in permanent storage can be created via
the web user interface or telnet user interface, or other management protocols.
The factory default configuration can be restored either by pushing the reset button
for more than ten seconds until the power indicates LED blinking or by clicking the
Restore Default Configuration option in the Restore Settings screen.
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3.2 IP Configuration
DHCP MODE
When the VR-3031u powers up, the onboard DHCP server will switch on. Basically,
the DHCP server issues and reserves IP addresses for LAN devices, such as your PC.
To obtain an IP address from the DCHP server, follow the steps provided below.
NOTE: The following procedure assumes you are running Windows XP.
However, the general steps involved are similar for most operating
systems (OS). Check your OS support documentation for further details.
STEP 1: From the Network Connections window, open Local Area Connection (You
may also access this screen by double-clicking the Local Area Connection
icon on your taskbar). Click the Properties button.
STEP 2: Select Internet Protocol (TCP/IP) and click the Properties button.
STEP 3: Select Obtain an IP address automatically as shown below.
STEP 4: Click OK to submit these settings.
If you experience difficulty with DHCP mode, you can try static IP mode instead.
12
STATIC IP MODE
In static IP mode, you assign IP settings to your PC manually.
Follow these steps to configure your PC IP address to use subnet 192.168.1.x.
NOTE: The following procedure assumes you are running Windows XP.
However, the general steps involved are similar for most operating
systems (OS). Check your OS support documentation for further details.
STEP 1: From the Network Connections window, open Local Area Connection (You
may also access this screen by double-clicking the Local Area Connection
icon on your taskbar). Click the Properties button.
STEP 2: Select Internet Protocol (TCP/IP) and click the Properties button.
STEP 3: Change the IP address to the 192.168.1.x (1<x<255) subnet with subnet
mask of 255.255.255.0. The screen should now display as shown below.
STEP 4: Click OK to submit these settings.
13
3.3 Login Procedure
Perform the following steps to login to the web user interface.
NOTE: The default settings can be found in section 3.1 Default Settings
STEP 1: Start the Internet browser and enter the default IP address for the device
in the Web address field. For example, if the default IP address is
192.168.1.1, type http://192.168.1.1.
NOTE: For local administration (i.e. LAN access), the PC running the browser
must be attached to the Ethernet, and not necessarily to the device.
For remote access (i.e. WAN), use the IP address shown on the Device
Information screen and login with remote username and password.
STEP 2: A dialog box will appear, such as the one below. Enter the default
username and password, as defined in section 3.1 Default Settings.
.
Click OK to continue.
NOTE: The login password can be changed later (see section 8.6.1 Passwords).
14
STEP 3: After successfully logging in for the first time, you will reach this screen.
You can also reach this page by clicking on the following icon located at the top of
the screen.
15
Chapter 4 Device Information
You can reach this page by clicking on the following icon located at the top of the
screen.
The web user interface window is divided into two frames, the main menu (at left)
and the display screen (on the right). The main menu has several options and
selecting each of these options opens a submenu with more selections.
NOTE: The menu items shown are based upon the configured connection(s) and
user account privileges. For example, if NAT and Firewall are enabled, the
main menu will display the NAT and Security submenus. If either is
disabled, their corresponding menu(s) will also be disabled.
Device Info is the first selection on the main menu so it will be discussed first.
Subsequent chapters will introduce the other main menu options in sequence.
The Device Info Summary screen displays at startup.
This screen shows hardware, software, IP settings and other related information.
16
4.1 WAN
g
Select WAN from the Device Info submenu to display the configured PVC(s).
Headin
Interface Name of the interface for WAN
Description Name of the WAN connection
Type Shows the connection type
VlanMuxId Shows 802.1Q VLAN ID
IPv6 Shows WAN IPv6 status
IGMP Shows Internet Group Management Protocol (IGMP)
MLD Shows Multicast Listener Discovery (MLD) status
NAT Shows Network Address Translation (NAT) status
Firewall Shows the status of Firewall
Status Lists the status of DSL link
IPv4 Address Shows WAN IPv4 address
IPv6 Address Shows WAN IPv6 address
Description
status
17
4.2 Statistics
g
This selection provides LAN, WAN, ATM and xDSL statistics.
NOTE: These screens are updated automatically every 15 seconds.
Click Reset Statistics to perform a manual update.
4.2.1 LAN Statistics
This screen shows data traffic statistics for each LAN interface.
Headin
Interface LAN interface(s)
Received/Transmitted: - Bytes
-Pkts
-Errs
-Drops
Description
Number of Bytes
Number of Packets
Number of packets with errors
Number of dropped packets
18
4.2.2 WAN Service
This screen shows data traffic statistics for each WAN interface.
Heading Description
Interface WAN interfaces
Description WAN service label
Received/Transmitted - Bytes
- Pkts
- Errs
- Drops
Number of Bytes
Number of Packets
Number of packets with errors
Number of dropped packets
19
4.2.3 XTM Statistics
g
The following figure shows ATM (Asynchronous Transfer Mode)/PTM(Packet Transfer
Mode) statistics.
ATM Interface Statistics
Headin
Port Number ATM PORT (0-3)
In Octets Number of octets received over the interface
Out Octets Number of octets transmitted over the interface
In Packets Number of packets received over the interface
Out Packets Number of packets transmitted over the interface
In OAM Cells Number of OAM Cells received over the interface
Out OAM Cells Number of OAM Cells transmitted over the interface
In ASM Cells Number of ASM Cells received over the interface
Out ASM Cells Number of ASM Cells transmitted over the interface
In Packet Errors Number of packets in Error
In Cell Errors Number of cells in Error
Description
20
4.2.4 xDSL Statistics
The xDSL Statistics screen displays information corresponding to the xDSL type.
The two examples below (VDSL & ADSL) show this variation.
VDSL
21
ADSL
Click the Reset Statistics button to refresh this screen.
Field Description
Mode G.Dmt, G.lite, T1.413, ADSL2, ADSL2+
Traffic Type Channel type Interleave or Fast
Status Lists the status of the DSL link
Link Power State Link output power state
Line Coding(Trellis) Trellis On/Off
SNR Margin (0.1 dB) Signal to Noise Ratio (SNR) margin
Attenuation (0.1 dB) Estimate of average loop attenuation in the downstream
direction
Output Power (0.1 dBm) Total upstream output power
Attainable Rate (Kbps) The sync rate you would obtain
22
Field Description
g
Rate (Kbps) Current sync rates downstream/upstream
In VDSL mode, the following section is inserted.
B Number of bytes in Mux Data Frame
M Number of Mux Data Frames in a RS codeword
T Number of Mux Data Frames in an OH sub-frame
R Number of redundancy bytes in the RS codeword
S Number of data symbols the RS codeword spans
L Number of bits transmitted in each data symbol
D The interleaver depth
I The interleaver block size in bytes
N RS codeword size
Delay The delay in milliseconds (msec)
INP DMT symbol
In ADSL2+ mode, the following section is inserted.
MSGc Number of bytes in overhead channel messa
B Number of bytes in Mux Data Frame
M Number of Mux Data Frames in FEC Data Frame
T Mux Data Frames over sync bytes
R Number of check bytes in FEC Data Frame
S Ratio of FEC over PMD Data Frame length
L Number of bits in PMD Data Frame
D The interleaver depth
Delay The delay in milliseconds (msec)
INP DMT symbol
In G.DMT mode, the following section is inserted.
K Number of bytes in DMT frame
R Number of check bytes in RS code word
S RS code word size in DMT frame
D The interleaver depth
Delay The delay in milliseconds (msec)
e
Super Frames Total number of super frames
Super Frame Errors Number of super frames received with errors
RS Words Total number of Reed-Solomon code errors
RS Correctable Errors Total Number of RS with correctable errors
RS Uncorrectable Errors Total Number of RS words with uncorrectable errors
23
HEC Errors Total Number of Header Error Checksum errors
OCD Errors Total Number of Out-of-Cell Delineation errors
LCD Errors Total number of Loss of Cell Delineation
Total Cells Total number of ATM cells (including idle + data cells)
Data Cells Total number of ATM data cells
Bit Errors Total number of bit errors
Total ES Total Number of Errored Seconds
Total SES Total Number of Severely Errored Seconds
Total UAS Total Number of Unavailable Seconds
xDSL BER TEST
Click xDSL BER Test on the xDSL Statistics screen to test the Bit Error Rate (BER).
A small pop-up window will open after the button is pressed, as shown below.
Click Start to start the test or click Close to cancel the test. After the BER testing is
complete, the pop-up window will display as follows.
24
xDSL TONE GRAPH
Click Draw Tone Graph on the xDSL Statistics screen and a pop-up window will
display the xDSL bits per tone status, as shown below.
25
4.3 Route
Choose Route to display the routes that the VR-3031u has found.
Field Description
Destination Destination network or destination host
Gateway Next hop IP address
Subnet Mask Subnet Mask of Destination
Flag U: route is up
!: reject route
G: use gateway
H: target is a host
R: reinstate route for dynamic routing
D: dynamically installed by daemon or redirect
M: modified from routing daemon or redirect
Metric The 'distance' to the target (usually counted in hops). It is not
used by recent kernels, but may be needed by routing daemons.
Service Shows the WAN connection label
Interface Shows connection interfaces
26
4.4 ARP
Click ARP to display the ARP information.
Field Description
IP address Shows IP address of host pc
Flags Complete, Incomplete, Permanent, or Publish
HW Address Shows the MAC address of host pc
Device Shows the connection interface
4.5 DHCP
Click DHCP to display all DHCP Leases.
Field Description
IPv6 Address Shows IP address of device/host/PC
MAC Address Shows the Ethernet MAC address of the device/host/PC
IP Address Shows IP address of device/host/PC
Expires In Shows how much time is left for each DHCP Lease
27
Field Description
IPv6 Address Shows IP address of device/host/PC
MAC Address Shows the Ethernet MAC address of the device/host/PC
Duration Shows leased time in hours
Expires In Shows how much time is left for each DHCP Lease
28
4.6 NAT Session
Click the “Show All” button to display the following.
Field Description
Source IP The source IP from which the NAT session is established
Source Port The source port from which the NAT session is established
Destination IP The IP which the NAT session was connected to
Destination Port The port which the NAT session was connected to
Protocol The Protocol used in establishing the particular NAT session
Timeout The time remaining for the TCP/UDP connection to be active
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