The HNS-9201 Satellite Phone supports up to 11 local addresses that may be dynamically assigned via the UT DHCP server or statically assigned by the user. The HNS-9201 NAT is supported on three interfaces; Ethernet, Wireless LAN and USB. The dynamic local addresses assigned via DHCP will be in the IP address range starting from 192.168.128.101. The HNS-9201 will support static IP addresses in the range from 192.168.128.1 through 192.168.128.100. NEW FEATURE The HNS-9201 will allow the user to configure whether or not a background PDP Context is automatically started for IP addresses in the range of 192.168.128.101 through 192.168.128.199 (via the ACA parameter). NEW FEATURE The HNS-9201 will automatically activate a PDP Context for IP addresses in the range of 192.168.128.200 through 192.168.128.249 [see 1.1.7: Automatic Context Activation] with varying Quality of Service (QoS). The “global” or “network” IP address will be dynamically assigned by the BGAN UMTS Network or the Distribution Partners PoP.  The global IP addresses can be in any subnet and each address may be in a different subnet. A static global IP address can also be used with the terminal for applications where a constant Internet address is needed for something like a web server or video streaming box.  The Distribution Partner(DP)/Service Provider (SP) has to issue these static global addresses.  Note: If the DP/SP uses private IP addressing at their Point-of-Presence (PoP), they will be responsible to assign a static mapping between the private static address and the Public static IP address.  See diagram 1 below. During normal operations, PDP contexts may be set up or torn down which means that the global addresses may come and go dynamically. The HNS-9201 NAT supports FTP, H.323, ICMP and VPN (IDE, ESP, GRE, L2TP, PPTP) with ALG’s or other NAT code modifications as necessary. Multicast traffic is supported.

The BGAN User Terminal conforms to the standard Internet Protocol version 4 addressing using four byte IP addresses.  The three interfaces that connect with the user’s Terminal Equipment (USB, Wireless LAN, and Ethernet) are bridged in the terminal and the bridged interface is assigned a fixed address of 192.168.128.100.      The satellite network interface, available through the BGAN stack, will be assigned an IP address that is either assigned dynamically by the UMTS network or is assigned statically through the Service Provider at the request of the End-User.  This is the IP address that the User Terminal is reachable over the air interface.  This may be a private address of the DP as explained in diagram above.    The Hughes UT will use the IP address as an argument for PDP context activation.  Otherwise, a dynamic IP address is requested in the PDP context activation request.  The confirmation of the PDP activation will include the IP address that is assigned to the User Terminal (static or dynamic).

In the outbound flow of traffic from the Terminal Equipment, a packet arrives at a UT network interface (USB, Wireless LAN, or Ethernet).  The network interface receives the packet and passes it up the IP stack.  The IP header is analyzed to determine the destination network interface that the packet is to be forwarded to.    The packet will match the default route in the routing table that will correspond to the satellite air interface.  The forwarding function in the Hughes UT will pass the packet to the NAT module registered to the satellite air network interface.  The NAT will maintain a mapping of <private IP address> to <public IP address> for each TE/PDP Context association.    The NAT modifies the IP header to substitute in the public IP address.    The packet is passed onto the UMTS interface driver.    The HNS-9201 will determine which PDP context the packet shall use to conform to the traffic flow template and quality of service requirements configured by the user.    The packet will then be passed to the Radio Access Bearer (RAB) for the proper PDP context for transmission over the BGAN satellite system.    The HNS-9201 will now pass the packet through the Packet Data Convergence Protocol (PDCP), Bearer Connection (BCn) Layer and the Bearer Control Layer (BCt) layers of the BGAN air interface protocol stack.    Incoming IP packets follows the same path as the outbound flow in the reverse direction.

The DHCP service allows hosts running on Terminal Equipment with DHCP clients to be configured automatically with a unique IP address upon connection to the UT.  The DHCP server assigns an IP address on a lease basis.   The DHCP server implemented in the Hughes UT conforms to Internet Standard RFC 2131.    The dynamic local addresses assigned via DHCP or statically via the End-user, will be in the IP address range from 192.168.128.101 to 192.168.128.199.

The Network Address Translation (NAT) module allows multiple Terminal Equipment devices to communicate with the public internet through unique global IP addresses.  As each TE connected to the UT requests a primary PDP Context, the UT will create a unique mapping of Local TE IP Address to PDP Context-allocated Global IP Address.   Each TE device that connects to the UT may request a static or dynamic (via DHCP), non-routable Local IP address.  The NAT is responsible for translating a given traffic flow from the TE devices in the private IP domain to a flow in the public IP domain.  The NAT does this by modifying the IP headers of the packets on-the-fly.    The HNS NAT is operated in a Basic NAT mode.  This results in each TE being allocated its own Global IP address, whether that address is statically defined by the user via LaunchPad or dynamically assigned by the Network.   In the fully static assignment scenario (local address configured statically in the TE and global address configured in the terminal and supported by a service plan with the provider), the TE will always have the same local address and the TE will always be accessible by network hosts through the known static global address.  This configuration is optimal for application servers running on the TE.   In the fully dynamic assignment scenario (local DHCP and network assigned global address), a local TE might get 192.168.128.101 corresponding to a global address of 148.212.115.7; another day it might get a local address of 192.168.128.103 corresponding to a global address of 148.212.115.20.  This configuration is optimal for the user that doesn’t run TE application servers, but does run client software that access application servers in the network.   Example of How the HNS Basic NAT Works • The basic idea of NAT is simple. • IP Devices connected to the HNS-9201 use dynamically or statically assigned addresses                        from ·   The NAT translates the local address assigned (e.g.192.168.128.101) to the global IP address before sending a datagram to the Network/PoP/Internet.

·         Suppose your HNS-9201 has local IP address 192.168.128.101 which was dynamically allocated by the DHCP server in the terminal. The Destination IP address is 148.212.115.7.  The TE generates a datagram with IP source address 192.168.128.101. ·         The NAT device replaces the IP source address 192.168.128.101 with the destination IP address 148.212.115.7 based upon the matching entry in the NAT Translation table. ·         The NAT forwards the datagram toward its destination. When a datagram is received by the NAT device, NAT looks up the matching translation table entry and replaces the destination address 148.212.115.7 with the appropriate TE address 192.168.128.101 ·         NAT forwards the datagram through the HNS-9201 to the correct local computer (TE)

Virtual Private Networks are secured private network connections which allow the transmission of data over a public telecommunication infrastructure; such as a public telephone network or the Internet.   VPNs employ tunneling protocols and a combination of security methods (encryption, digital certificates, strong user authentication and access control) to allow a private connection.  NATs create issues for VPN products, so the VPN client and server that you are using needs to be configured to traverse a Basic NAT.   VPN connectivity is supported via the Hughes UT, but once a VPN is active the local IP address of the TE will be changed from the perspective of TE applications.   NOTE: If the VPN is activated via LaunchPad, LaunchPad connectivity will be lost as the UT IP Address will become inaccessible because all traffic will be tunneled through the VPN connection.

In Ethernet and Wireless LAN modes, the Hughes 9201 can support multiple TEs by assigning IP addresses from the Class C address space 192.168.128.x.    In Ethernet mode a hub can be used to allow multiple TEs to be connected via Ethernet and the Satphone will assign each TE an IP address in the class C subnet via DHCP.   Alternatively, a router (that includes a NAT) could be connected to the Ethernet interface and multiple TEs connected to it would share the same PDP context.   In this case the whole local network appears as a single device to the Satphone and the router assigns IP addresses to the TEs in its own subnet. For WLAN, the UT assigns IP addresses via DHCP to the connected WLAN client TEs.

ACA Quality of Service (QoS) Assignments

Connection Type	Low Address Range	High Address Range	Context QoS
Configurable via ACA	192.168.128.101	192.168.128.199	Background
Automatic	192.168.128.200	192.168.128.209	Background
Automatic	192.168.128.210	192.168.128.219	32k Streaming
Automatic	192.168.128.220	192.168.128.229	64k Streaming
Automatic	192.168.128.230	192.168.128.239	128k Streaming
Automatic	192.168.128.240	192.168.128.249	256k Streaming

Configurable Background Context If the Hughes 9201 recognizes a TE with an address range of 192.168.128.101 through 192.168.128.199, a background context will be established if the “Automatic Context Activation” parameter is set.  This parameter can be set via the AT_IHINIT AT-command.    Automatic Context for specific Quality of Services (QoS) If the Hughes 9201 recognizes a TE with an address range of 192.168.128.200 through 192.168.128.249, a PDP Context will be established automatically with a specific QoS as defined in Table 1: ACA Quality of Service (QoS) Assignments.     Front Panel LED Indicators The Automatic Context Activation feature will make use of the front panel LED’s to give visual feedback to the user what the context status is for each QoS.

Blinking Green LED The UT is currently trying to establish a PDP context with the desired QoS.    Solid Green LED The UT currently has at least one PDP context using the desired QoS.    Blinking Red LED The UT failed to establish a PDP context using the desired QoS, but it is retrying.    Solid Red LED The UT failed to establish a PDP context using the desired QoS.    Previous ACA Feature Description Hughes-9201 releases up to and including 3.6.0.5, the Automatic Context Activation will activate a single context on IP address 192.168.128.101.  Any “dumb” device that needed to use this context would have to configure their device to this IP address.

Wireless Networking

The Dawn of the Wireless Renaissance It's Time to Go Wireless! Although we're constantly hearing about the miracle of wireless technology, we're merely at the dawn of the Wireless Renaissance. From Auckland New Zealand to Mt. Everest, Internet cafes and other wireless hot spots dot our increasingly interconnected globe (yes, there really is an Internet Café at a Mt. Everest base camp), but the best and most ingenious use of this breakthrough innovation is yet to come. For now, the wireless gold standard is 802.11g - - the newest, fastest and most powerful 802.11 radio technology that broadens bandwidths to 54 Mbps within the 2.4 GHz band. Because of backward compatibility, older and slower 802.11b radio cards can interface directly with an 802.11g access point and vice versa at 11Mbps or lower, depending upon range. We've come a long way, baby - just in the past couple of months. That's how rapidly the wireless net that will someday encompass the entire globe is morphing. Much quicker than we write these words, technicians are gleaning new ideas that will revolutionize the way we communicate. From Marconi (the inventor of wireless communication back in the late 19th Century) to 802.11g - the sky is not the limit for how far we will take the wireless renaissance - it was merely a suggestion that we rejected long ago.
	Rating the 802.11 Wireless Standards In 1997, when the Institute of Electrical and Electronics Engineers (IEEE) created the first WLAN standard they called it 802.11. Because it could only support a maximum bandwidth of 2Mbps - far too slow for most of today's applications - ordinary 802.11 wireless products are no longer being manufactured. The next wireless incarnation was 802.11b, which supports bandwidths of up to 11Mbps, followed by the creation of 802.11g, which supports bandwidth up to 54 Mbps and signals in a regulated 5 GHz range. While 802.11g is the fastest wireless technology, is it the best for your home or business? Here is a brief synopsis of the three primary 802.11 standards:
	1. 802.11b - This technology supports bandwidth up to 11MBps, which is comparable to the speeds of traditional Ethernets. 802.11b uses the same 2.4GHz radio signaling as the original 802.11 standard. Because it is an unregulated frequency, 802.11b devices run the risk of incurring interference from appliances that use the same 2.4 GHz range, such as microwaves and cordless phones. However, if you install 802.11b devices out of range of other appliances, you can avoid the interference. Some manufacturers prefer using unregulated frequencies, such as 802.11b to lower their production costs. On the negative side, 802.11b is relatively slow and supports fewer simultaneous users. 802.11a - IEEE created 802.11a at the same time it made 802.11b. 802.11a supports bandwidth up to 54 Mbps and signals in a regulated 5 GHz range. This higher frequency limits the range of 802.11a in comparison to 802.11b, and due to its higher cost it's used primarily in the business sector rather than in homes. 802.11a's higher frequency also causes its signals to have difficulty penetrating walls and other obstructions. Because they utilize different frequencies, 802.11a and 802.11b devices are incompatible with each other. 802.11g - This technology supports of up to 54 Mbps, uses the 2.4 GHz frequency and is backwards compatible with 802.11b devices. 802.11g supports more simultaneous users, offers the best signal range and is not easily obstructed. The disadvantages of 802.11g is higher cost and possible interference with appliances on the unregulated signal frequency.
	The Evolution of 802.11 Wireless Technology 1997 - 802.11 - 2 MBps 1999 - 802.11a - 54 Mbps in regulated 5 GHz range. Pro: Fast access. Con: Limited range 1999- 802.11b - 11Mbps in 2.4 GHz range 2002 - 802.11g - 54 Mbps in 2.4Ghz range and is backwards compatible with 802.11b, meaning that 802.11g access points will work with 802.11b wireless network adapters and vice versa. Pro: Faster access and backwards compatibility. Con: Higher cost than 802.11b.
	Why Connect? According to International Data Corp. (IDC), about half of all U.S. households have a computer, and a much higher percentage of businesses use PCs. Tens of millions of these homes and businesses have more than one computer one. In fact, market research shows that current PC owners buy most of the new computers. This means that multi-computer households are becoming increasingly more common. If you are one these multiple-PC owners, you have probably thought about how great it would be if your computers could talk to each other. With your computers connected, you could: Share a single printer between computers Share a single Internet connection Share files such as images, spreadsheets and documents Play games that allow multiple users at different computers
	Advantages of wireless networking: It's fast (11 - 108Mbps). It's reliable. It has a long range (5,000 feet in open areas, 250 to 400 ft / 76 to 122 m in closed areas) It's easily integrated into existing wired-Ethernet networks. Virtually all 802.11g wireless networking products work with each other no matter what brand or model. Wireless offers Ethernet speeds without the wires. Access points vary greatly in cost, from about $59.99 to $1,400. Access points have an integrated Ethernet connection to connect to an existing wired-Ethernet network or routers provide connectivity to a high-speed data connection (DSL or cable modem). It also has an omni-directional antenna to receive the data transmitted by the wireless transceivers. Integrating PCs and Apple systems on the same network is also possible with the 802.11g standard. The majority of wireless network adapters used are in PCMCIA card form. But some manufacturers do offer USB adapters or PCI format cards. The cost per card ranges from $39 to more than $300. They are not typically sold in "do-it-yourself" kits. Instead, everything is a la carte, allowing customers to build a system that exactly meets their needs.
	For businesses, the benefits of wireless technology are dramatic; we are not using hyperbole when we assure you that it will revolutionize your company. A wireless infrastructure makes it easier for you to adapt your office space as your company evolves. And the productivity gains you will reap dwarf the relatively inexpensive cost of setting up a wireless local area network (LAN). Here are the primary benefits your business will receive by going wireless: Reduced Installation Costs - It's less expensive to install wireless access points than wiring your office with Ethernet capabilities. Plus, you will not have to knock holes in walls to set up your network. Flexibility - If your company is growing rapidly and you need to constantly reorganize your space to accommodate ever-changing networking configurations, wireless networking provides rapid transition times, reduced down time and will not cost you as much as you would have to pay to rewire your office space. By setting up a network, you will be able to easily share devices, programs and technology with multiple computers. You can share peripheral devices, programs and technology to streamline your business and make it much more efficient. Convenient Information Access and Increased Productivity - Wireless delivers information access to anyone on your staff, from anywhere in your office. Most offices that have made the transition from wired networks to wireless systems have experienced remarkable increases in productivity.
	It's Not as Complicated as You Think! Most people think that networking your home or small office can be painful, with lots of wires, connections and other challenges. Plus, you have to make everything talk to each another. Don't fret, because it's not as much of a challenge as you might think. With most people using Microsoft Windows operating systems, networking has been built-in since Windows 3.11. Introduced in Windows 98, "Internet Connection Sharing" is a standard part of the operating system, allowing one computer to share an Internet connection with all computers on the home network. So, if you are running Windows, you can share files, printers and resources across your network without too much of a hassle. Following are 3 easy steps that will allow even a novice to setup a wireless network.
	Wireless Networking Made Simple 3 Easy Set Up Steps Even the Novice Can Master 1. Plan Your System - Before you dive into the wireless world, make sure you know what lies ahead of you. Make a thorough analysis of your networking needs, what you need to accomplish, and what you expect to receive as a reasonable return on your investment. Assess your networking needs; determine how many workstations you'll need to connect and where you can best utilize them. Also, take an inventory of what upgrades you will have to make to your existing computer equipment and decide what equipment you will need to purchase. These are the types of devices required for your wireless network: Wireless Access Point - This is the "controller" of your wireless network. There are two types of access points - hardware access points and "integrated" access points. Hardware access points are used as an extension of an existing wired network. "Integrated" access points also provide the features of a router, and are connected to a high-speed connection (i.e.: DSL or cable modem. Access points generally can serve at least 50 users, so exceeding the connection limits is rarely an issue. Remember that when you are networking, your connection is shared with all active users. Having an 11, 22, 72, 108 Mbps network connection does not make your Internet connection "faster," however, it will allow faster data transmission between the users on the same wireless network. So, if you are planning on copying a bunch of files from your bedroom computer to the living room computer, or watching a video you recorded in your living room on your bedroom computer, the data transfer speed is great. While surfing the Internet, you may see a decrease in access speed to the Internet if your son is downloading MP3s in his bedroom and you are trying to watch an online video. Your wireless connection speed will vary based upon your location (i.e. out by the pool vs. across the room from the access point), however proper placement of your access point can assist in providing the best service to all areas you intend on using a wireless connection. We carry a wide-range of wireless access points, including some which combine a multi-port wired hub so you can utilize one device for both your wired and wireless connections. PCMCIA Wireless Adapter - This is generally used for laptops. A PCMCIA card simply plugs into your notebook PC Card slot, and after configuration with the software provided with the card, will connect to any detected network. Some access points allow for configuration of security so only "allowed" cards are provided access. This will alleviate any problems if your neighbor decides to ride on your Internet service for free once they see you using the Internet out by your pool. Desktop PCs can also be connected to a wireless network by using an inexpensive PCMCIA-to-PCI adapter, which allow for fast, easy connection of a desktop PC through the use of an internal adapter card that the PCMCIA card slides into. Compact Flash Wireless Network Adapters - If you have a handheld device, which includes a CF Type II slot, you can connect it to your wireless network using a Compact Flash Wireless Network adapter. USB Wireless Adapter -Great for use with desktop PCs, a USB wireless adapter allows you to connect your system to the wireless network without installing any adapter cards or opening your PC whatsoever. These are a convenient and easy way to add wireless networking to an existing PC in your home. Additionally, based on user feedback, an external USB device has better reception than an internal PCMCIA card in the back of your computer, as you can move it around for the best reception. "Wired" And "Wireless" Together - "You can actually build a network comprised of Integrated access points, for both wired and wireless communications. Why would you want this? Well, let's say that you have the ability to run wire for the systems in your home. The cost is less per computer (an Ethernet NIC runs about $10.00 and the cable anywhere from $5-10) and you may have them easily accessible via cable. There are many mixed-mode devices, or "Gateways" available. For our full selection of Integrated Access Points. This device allows you to connect to a high-speed Internet connection (via the WAN port) and up to three wired devices (on the Ethernet ports) and up to 253 devices via the wireless access point built into the unit. This allows you to have standard desktops connecting with roaming notebooks and other devices where wiring is just not possible. In summary, if you want to run a network in your home or office, it really isn't that tough! Pick the right parts to your network "puzzle" and get the best deal available. They'll work together and you'll make better use of ALL your resources
	2. Setting Up Your System - Now that you have a plan in place that defines exactly what your equipment needs will be, how you will configure your network and what goals you expect to accomplish with wireless technology, it's time to set up your network. Before you take this step (don't worry, it's much easier than it seems), you must develop a good working understanding of the equipment involved in a wireless network. Wireless LAN equipment consists of wireless clients - the notebook computers, printers or handheld devices that can communicate over a wireless LAN - and access points, which are the points that accept the wireless radio signals and then connect the LANs. Your access point is the central communications point for your computers. These Now it's time to build the wireless LAN! Again, don't panic - you will be amazed how simple it is. Here is what you have to do:
	Determine how many people will use your network; this will tell you how many access points you will need. Choose a central location for your LAN connection. If possible, this should be in an open environment to maximize your wireless range. Walls, cables, pipe, etc. within your existing environment can compromise your range. Configure your wireless network to work with your network. Test your installation before going live. With link test software you can find out what percent of your data is being sent correctly, how much time it takes to receive a response from the destination device, how the strength of the transmitted signal. Establish a protocol for managing your wireless LAN.
	3. Implement security measures to protect the integrity of your wireless network - Remember, wireless communications transmit through the air rather than over a closed capable. Therefore, maintaining security over your system requires measures that are specific to wireless. Wireless security solutions include Media Access Control (MAC), WEP encryption and Traditional VPN (Virtual Private Network) securities controls. Following are brief summaries of these solutions:
	MAC - Media Access Control restricts network access by unauthorized devices by assigning each network card a unique hardware identification number. WEP Encryption - A software algorithm that scrambles outgoing data and unscrambles it when it is received, maintaining its integrity while en route. Traditional VPN (Virtual Private Network) security controls - Allows users outside your system to gain access to your network. VPNs encrypt data prior to transmission over a wireless link, ensuring data security even if it is intercepted. VPNs are particularly critical when you are using a public hot spot.
	Three simple steps - that's all it takes to join the wireless revolution - along with a relatively small investment in new technology that you will recoup many times with your exponentially improved efficiency and streamlined operation. We have the expertise, incomparable product line and unparalleled pricing to help you become experience all the advantages of benefits of wireless technology.

08-06-2006 - Partners and end-users are being advised of a quick and easy way to increase the speed of BGAN's standard IP data traffic in the "send" direction.

The throughput speed of BGAN traffic in the "send" direction (i.e. data sent from the terminal) will be enhanced if the window size on the receiving PC or server is correctly set.

And Inmarsat has prepared a small software file, available for download here, which automatically configures the client computer or server.

The window size on an IP connection effectively sets the number of packets ¿in flight¿ between origin and destination, at any given time.

Setting an optimum window size is particularly relevant for channel Partners undertaking customer demonstrations, and for end-users

users who frequently access the same servers with applications such as FTP (e.g. media customers, or corporate customers accessing intranet sites).

The optimum window size for BGAN is 128k (default setting on many systems is 64k).

Disclaimer: Modifying the computer registry may cause problems that may require you to reinstall the operating system. We cannot guarantee that problems resulting from modifications to the registry can be solved. Use the information provided at your own risk. Inmarsat will not be liable for any issues or problems that may arise in using this software.

To set the window size for systems running Windows XP or Windows 2003, follow the instructions below:

How to use automatic registry key entry to manage a client computer's or server's TCP parameters:

1. Inmarsat supplies two .reg files that will automatically configure the client computer or server to use the recommended TCP parameters. Choose the appropriate file to match your operating system.

2. The two files are:

• WinNT.reg (for use with Windows NT)
• WinXP_Win2k_Win2ksvr_and_Win2k3svr.reg (for use with Windows XP, 2000 Professional, 2000 Server and 2003)

3. Save the relevant .zip to your desktop and uncompress.

4. Double click the .reg file to change parameters. When the following screen appears click "yes" to continue:

5. When the following screen appears click "OK" to finish.

6. Re-boot your PC for the changes to take effect.

Note: Windows NT does not support windows scaling and therefore only supports a 64k window size. Hence running Windows NT over BGAN will give a lower performance than other operating systems.

How to configure TCP parameters manually

Use the following settings when configuring the TCP parameters. Please ensure you re-boot after the settings have been entered.

Registry Settings
System Key: [HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\Tcpip\Parameters]

Value Name: TcpWindowSize
Data Type: REG_DWORD (DWORD Value)
Value: HEX: 1FFFF or Decimal: 131071

Value Name: Tcp1323Opts
Data Type: REG_DWORD (DWORD Value)
Value: HEX: 1 or Decimal: 1

08-06-2006 - Partners and end-users are being advised of a quick and easy way to increase the speed of BGAN's standard IP data traffic in the "send" direction.

The throughput speed of BGAN traffic in the "send" direction (i.e. data sent from the terminal) will be enhanced if the window size on the receiving PC or server is correctly set.

And Inmarsat has prepared a small software file, available for download here, which automatically configures the client computer or server.

The window size on an IP connection effectively sets the number of packets ¿in flight¿ between origin and destination, at any given time.

Setting an optimum window size is particularly relevant for channel Partners undertaking customer demonstrations, and for end-users

users who frequently access the same servers with applications such as FTP (e.g. media customers, or corporate customers accessing intranet sites).

The optimum window size for BGAN is 128k (default setting on many systems is 64k).

Disclaimer: Modifying the computer registry may cause problems that may require you to reinstall the operating system. We cannot guarantee that problems resulting from modifications to the registry can be solved. Use the information provided at your own risk. Inmarsat will not be liable for any issues or problems that may arise in using this software.

To set the window size for systems running Windows XP or Windows 2003, follow the instructions below:

How to use automatic registry key entry to manage a client computer's or server's TCP parameters:

1. Inmarsat supplies two .reg files that will automatically configure the client computer or server to use the recommended TCP parameters. Choose the appropriate file to match your operating system.

2. The two files are:

• WinNT.reg (for use with Windows NT)
• WinXP_Win2k_Win2ksvr_and_Win2k3svr.reg (for use with Windows XP, 2000 Professional, 2000 Server and 2003)

3. Save the relevant .zip to your desktop and uncompress.

4. Double click the .reg file to change parameters. When the following screen appears click "yes" to continue:

• Press [Menu] [4] [9]
• You will receive a message  " Handset reset will set all values to Factory setings and deletes last calls
• Press [Yes] Handset will appear to freeze, but will eventually shut down. 

DO NOT REMOVE THE HANDSET FROM THE SATELLITE PHONE TERMINAL.

You may need to then power cycle the satellite phone terminal.

Next, if you plan on using the terminal for incoming calls, you may want to reset the Mobile Subscriber Number (MSN) to match the terminal you are using.

• Press [Menu] [4] [8]
• If you have nothing listed press [options]
• If you have something listed, scroll to the one you want to edit then press [options]
• Scroll to either Edit number or Add number. Press [Select]
• For HNS Standard Voice for Number enter 1
• For Label enter something you will remember.
• Press [Save]