Airlink 5200 User Manual

Application Note

for connecting the

AirLink Raven CDPD Modem

to Ethernet Devices using the

IP 5200 from DCB

March 2002

AirLink Communications, Inc.

Confidential Material - Not For Redistribution

AirLink Application Notes

THIS DOCUMENT CONTAINS CONFIDENTIAL MATERIAL AND

IS NOT INTENDED FOR REDISTRIBUTION.

Information contained herein is the property of AirLink Communications, Inc. and is produced for the
purpose of detailing technology developed by AirLink Communications, Inc. and its employees.
Reproduction or distribution of this document without the express written consent of AirLink
Communications, Inc. is strictly prohibited. This document is subject to change without notice.

 Copyright AirLink Communications, Inc, 2001. All rights reserved.

Please send comments to:

Email: [e-mail]
Fax: [phone]
Phone: [phone]
Post: AirLink Communications, Inc.

Attention: Technical Publications Dept.
472 Kato Terrace
Fremont, CA 94539

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AirLink Application Notes

CONTENTS

1. OVERVIEW.....................................................................................................................................4

2. INTERNET (TCP/IP) CONNECTION VIA CDPD.....................................................................4

3. ETHERNET DEVICE & IP5200 CABLING & INSTALLATION.............................................4

4. IP5200 CONFIGURATION ..........................................................................................................5

5. AIRLINK RAVEN CDPD MODEM CONFIGURATI ON.........................................................11

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AirLink Application Notes

Frame

3 1 2

1. Overview

This document describes how to connect the AirLink Raven CDPD Modem to the IP5200 Async­Router from Data Communications for Business (DCB). Information on the IP5200 and DCB is available
at www.dcbnet.com . Additional information about AirLink Communications products is available at

www.AirLink.com

2. Internet (TCP/IP) Connection via CDPD

Normally, remote access to an IP 5200 is done via Dialup Telephone Line. When using CDPD, remote
access to is done via a TCP/IP connection to the CDPD Network (ie: Internet) an d the use of a CDPD
Modem connected to a DCBNet IP5200 Single-Port Async-Router.

On the HOST side, access to the CDPD Network could be made using any of the following means:

1. Using a Frame Relay connection into the CDPD Network

2. Using the public Internet

3. Using another CDPD Modem connected to the Host System

Relay

Internet

Other

CDPD

Networks

Local

CDPD

Network

3. Ethernet Device & IP5200 Cabling & Installation

Setting up the Ethernet device (PC, RTU, PLC, etc) for communicating over CDPD is fairly
straightforward. All the same configuration settings used for a LAN installation apply to a CDPD
installation. Since the device is actually sitting on a very small LAN, (just the device and the IP5200), the
IP Address would be a private IP, such as: 192.168.1.101. The IP5200 would have an Address in the
same range, such as: 192.168.1.100.

DNS, FTP, SMTP, and Email settings would be for servers visible to the public Internet or in the
case of Frame Relay connections to the CDPD network – IP Addresses visible to the Frame Relay cloud.
(See your Network Administrator or Carrier for more details on which Addresses or server names to use).

When the device initiates Ethernet traffic (by either sending an email or starting an FTP session, etc),
the router will dial the CDPD modem and establish a PPP connection. The CDPD Modem will supply the
router with its IP address, virtually becoming the router’s Internet Service Provider (ISP).

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AirLink Application Notes

192.168.1.101

Ethernet

RS232

192.168.1.100

166.x.x.1

166.x.x.1

IP Address of CDPD Modem becomes Public Side

IP5200 is both a Dial

-on-

Demand

Private Class

-

C IP Addresses are on same

At the ‘

’ page,

select the ‘Internet Access’

tton

takes you to the Main Menu.

10

100 RJ-45 1 2 3 4 5

Power

Diagram of how to connect the IP5200 Router and CDPD modem:

Router and Network Firewall

Crossover

Cable

Address of Router during PPP negotiations.

subnet using subnet mask 255.255.255.0.

4. IP5200 Configuration

Setting up the IP5200 should be done using the instructions provided by DCB. The DIP Switches
on the Ethernet side of the unit are used for handshake and flow control and should be set as follows:

Jack £ £ ¤ ¤ ¤

The following screen shots cover the device settings specific to connecting to a CDPD Modem.

WWeellccoommee ttoo SSeettuup

button. The Configure bu

p

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You will need to set the Internet

LAN Settings, and

The Internet Access se

tup

screen for Ports 1 and 2 has

three requirements:

Multi

-

port Usage

Even though the

IP5200’s (2) serial

ports can be used for

link PPP, this is

not a feature that can

be used over CDPD

Account,
Dial-out Modem parameters.

AirLink Application Notes

- ‘Enable’ must be checked

- Tel -1 and Tel-2 should be
entered as shown

- Disconnect after Idle Time
should be set to ‘0’.
This will make sure the
IP5200 does not drop the
PPP connection when the

serial port is idle.

Multi-

network.

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LAN Configuration is actually

The LAN IP Address needs to be

different from the PLC address, but on

the same network and using the same

You will need to supply your own DNS

Settings. You can get these from your

Since there is no actual

Internet Account when

connecting to a CDPD

Modem, you can leave the

User Name, Password, and IP

Address allocated by ISP left

DNS should be the same as

entered on the previous

blank.

screen.
No Script File is needed.

AirLink Application Notes

referring to the Ethernet Port.

Net Mask.

CDPD carrier.

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Select the Modem option.

Selecting the ‘Properties’ button

will take you to the Modem

The Modem setup screen has four

Properties screen.

AirLink Application Notes

requirements:

- Initial String should be ‘AT’

- Serial Line Speed = 19200

- Dial Type = Other

- Dial String = ‘ATDT’

- Auto-answer commands are N/A

- Select ‘Save as Other’

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The Advanced Menu has a great

tures, most of which do

Most of these settings deal with the

firewall functions inside the

IP52000. Since there is only one

device on the Ethernet port, and it is

connected to a CDPD Modem, and

t really

To put the Ethernet port outside the

IP5200, you must set the device up

Select Enable Exposed

Computer Feature and

enter the IP of the Ethernet

device. In this case it is

many fea
not apply to this application.

not an ISP, the firewall is no
necessary.

as an Exposed Computer.

AirLink Application Notes

192.128.1.101.

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Checking to see if the

Go to the Port Status page

on the Main Menu and

button.

You can watch the Log for

entries and errors, and see

the Physical Link and PPP

atus right on the

You know right away if the

connection to the modem is

router works is easy.

Select the Dial-Up

Link st
screen.

AirLink Application Notes

working or not.

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AirLink Application Notes

5. AirLink Raven CDPD Modem Configuration

The following are the proper S-Register configurations for the AirLink Raven CDPD Modem when
connecting to the IP5200 for making a PPP connection. These settings can be made using Wireless ACE.

CDPD Parameters:

[S110] Device Port=12345
[\N] Side Preference=3
[S116] Service ID Preference=3
[S111] Service ID=0/0/0
[S112] Channel List Mode=2
[S113] Channel List=0,0,0,0,0
[3W] 3 Watt Booster Support=0
[*DSIDE] Disable Side Switch=0
[*CTSE] CTS CDPD Enable=0
[#X] Serial Debug Output=0

Modbus Parameters: N/A

Connection Parameters:

[S0] TCP Auto Answer Mode=0
[S7] TCP Establishment Timeout=20
[S50] Data Forwarding Timeout=1
[S51] Data Forwarding Character=0
[S53] Destination IP Address=10.0.10.0
[S53] Destination TCP/UDP Port=12345
[S53] Destination Connect Mode=T
[S210] AT Command Compatibility=1
[S211] Ignore DTR=0
[MD] Startup Mode Default=0
[MD] UDP Mode Default=0
[S60] Telnet Echo Mode=0
[S82] UDP Half Open Mode=0
[S83] UDP Half Open Timeout=5
[AIP] Allow Any UDP IP=1
[HOR] UDP Half Open Response=1
[S220] Break On TCP Connect=0
[S221] Delay Connect Response=0
[E] Command Echo=1
[V] Command Response Mode=1
[Q] Quiet Mode=0
[X] Call Progress Result Mode=0
[TCPT] TCP Inactive Timeout=1
[TCPS] Specify TCPT in Seconds=0
[TCPX] Allow TCP Suspension=0
[*DATZ] Disable Reset on ATZ=0
[*ENQ] Enable ENQ on TCP Connect=0
[DAE] Disable AT Esc Sequence=0
[RKEY] Radio Transceiver Keying=0
[IPL] IP List Dial=0
[*DU] Dial UDP Always=0

Friends List: (Optional)

COM Port Parameters:

[\Q] Flow Control=2
[S23] Baud Rate=19200
[S23] Data Bits=8
[S23] Parity=N
[S23] Stop Bits=1

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