The
LAN port can be used for connecting your LAN to the Internet via ML
PPP or PPP. It could also be used for providing a connection between 2 LANs.
For further information on different ways the AETA can help you in your
business, check out Network
Scenarios or the Braintree
web site.
Before
configuring the Ethernet port using this method, you will need to have
configured the Serial
or USB port on your PC. You will also need to use a
terminal program such as Hyper Terminal to configure the AETA using AT
commands.
To
configure the Ethernet port with a basic configuration, you will need the
following information:
The
IP address for the AETA LAN interface and your network mask. These details are determined by your LAN configuration. If in
doubt contact your network administrator.
Your Internet Service Provider’s (ISP) ISDN dial in phone number. Your ISP will provide these details.
Username
and password for your Internet connection.
Your ISP will provide these details.
Now if you wish to use Multi Link Point to Point
Protocol (ML_PPP, see below), and whether or not your ISP can accommodate ML_PPP
(ask your ISP, its usually turned off by default).
If
you don't feel confident using this method to configure the AETA's LAN port check
out Braintree's web site for configuration utilities on the useful
links page.
Warning:
Programs that periodically access the Internet, such as E-mail programs, if
left operating will cause unnecessary calls to your ISP. It is
possible to
disable or configure the periodic Internet access feature in most programmes,
see your software user guide or help for assistance.
If IP packets are sent unnecessarily on your local network that are outside
your local IP address range, this will result in excessive calls to your
Internet Service Provider. This will result in increased call charges. By
design, the AETA only passes TCP/IP packets and will not forward broadcast
packets.
Please Note: This is the normal method of operation for Dial On Demand routing
equipment.
The
commands to enter are:
AT*E0="172.168.0.1" replace the italics with you IP address. Then,
AT*E1="255.255.255.0" replace the italics
with your Network Mask. Then,
AT&W (This writes the IP address and mask to the memory)
For
the IP address and the Network Mask to take effect it is necessary to reset the
AETA. To do this, turn the power off to the AETA for at least 5 seconds.
Warning: Turning the power off to the AETA will temporarily
disrupt all communications including EFTPOS
and Phone.
Turn
the power back on to the AETA. Then
enter:
AT*E2=180 idle call time out delay in seconds. The inactivity
time out delay for Internet traffic will then be set to 180 seconds.
AT*P0=0198303030 Replace Italics with your ISP phone number or
replace the italics with your ISP's
ISDN access number.
AT*P1="User Name" Replace the italics with your User Name for your ISP.
AT*P2="Password" Replace
the italics with your Password for
your ISP.
Multilink
PPP is used to double the available connection speed to the Internet, this can
potentially halve the time to download web pages and files from the Internet*.
The AETA does this by making a second call to your Internet Service Provider
(ISP) so that two lines are then available for downloading information.
The AETA will make the second call to your ISP depending upon the amount
of information you are downloading from the Internet.
By default it will also disconnect the second call to allow an incoming
or outgoing phone call.
If
your ISP supports Multilink PPP, you may wish it enabled. Follow the link
below for instructions on enabling Multilink PPP.
Download
times from the Internet vary due to many factors only one of which is the speed
you are connected to the Internet. Other factors may include the speed of the
server you are connecting to and the speed and bandwidth of any connections
between your ISP and the server you are connecting to.
By
default the AETA provides Dynamic Network Address Translation (Dynamic NAT).
This provides a level of separation between your LAN and the Internet. Due to
the operation of Dynamic NAT, any programs using the FTP protocol will need to
use passive mode (PASV). For information on how Dynamic NAT works, go to http://www.howstuffworks.com/nat.htm.
For a technical reference to NAT, go to rfc3022
(Traditional NAT)