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AirLink Communications Raven GPRS User Manual

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User Guide
Version 1.08
AirLink Communications, Inc.
September 29, 2003

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Summary of Contents for AirLink Communications Raven GPRS

  • Page 1 User Guide Version 1.08 AirLink Communications, Inc. September 29, 2003...
  • Page 2 Information in this document is subject to change without notic © Copyright AirLink Communications, Inc, 1993-2003. All rights reserved. Please send comments to: email: pubs@AirLink.com Fax: 510-226-4299 Phone: 510-226-4200 Post: AirLink Communications, Inc. Attention: Technical Publications Dept. 472 Kato Terrace...
  • Page 3 Although significant delays or losses of data are rare when wireless devices such as the AirLink Communications modem are used in a normal manner with a well-constructed network, the AirLink modem should not be used in situations...

  • Page 5: Table Of Contents

    Raven GPRS User Guide Table of Contents Introduction ..................5 Raven Product Overview ................6 Network Connection ..............7 Internet (TCP/IP) Connections via GPRS ............ 7 Data Connections................... 7 Raven and PinPoint GPRS Configuration ........ 9 Local Configuration ..................9 Modem Activation ..................
  • Page 6 Connecting the antenna ................54 Connecting the serial cable ................. 54 Grounding the Raven Case ................. 54 Connecting the power cable................. 54 Raven GPRS Technical Specifications........57 Physical Characteristics ................57 Power Specifications ..................57 Environmental ..................... 57 RF Features ....................57 Status LED Display ..................

  • Page 7: Introduction

    Raven GPRS User Guide 1. Introduction The GSM/GPRS wireless network combines the world’s leading wireless standard— the Global System for Mobile Communications (GSM)—with fast, packet-switched access to data networks such as the Internet. Providing this fast access is the General Packet Radio Service (GPRS).

  • Page 8: Raven Product Overview

    Raven GPRS User Guide Version 1.08 1.1 Raven Product Overview The AirLink Raven GPRS is a rugged, full duplex GPRS modem that provides wireless transport capabilities for fixed and mobile applications. GPRS is an efficient and secure wireless technology that works well for fixed or mobile applications.

  • Page 9: Network Connection

    Network Connection Raven GPRS User Guide Version 1.08 2. Network Connection The AirLink GPRS modems are capable of providing network connections for GPRS and SMS data. 2.1 Internet (TCP/IP) Connections via GPRS When using a Raven or PinPoint GPRS modem, remote access to is done via a PPP (TCP/IP) connection to the GPRS network.
  • Page 10 Network Connection Raven GPRS User Guide Version 1.08 If the host establishes a PPP link to the Raven, a second PPP link is created between the Raven and the host. IP packets can then be sent to and received from the GPRS network.

  • Page 11: Raven And Pinpoint Gprs Configuration

    Raven and PinPoint GPRS Configuration Raven GPRS User Guide Version 1.08 3. Raven and PinPoint GPRS Configuration Configuration of the Raven and PinPoint GPRS modem is done using a terminal emulation program like HyperTerminal in Windows. IMPORTANT NOTE: At this time Wireless ACE cannot be used to configure the GPRS modems from a Windows computer.
  • Page 12 Raven and PinPoint GPRS Configuration Raven GPRS User Guide Version 1.08 6. For "Connect using" select the COM port that the modem is on (do not select a modem driver), then select OK. 7. Select 115200 for the "Bits per second." Ensure Data Bits: 8, Parity: None, Stop bits: 1 and Flow control: Hardware.

  • Page 13: Modem Activation

    8. Type AT followed by [Enter]. You should receive an "OK" in response. 9. Type ATI1 followed by [Enter]. This displays the modem firmware version and you should also see "AirLink Communications, Inc." in it which ensures you are talking to the AirLink modem. (If not, try changing COM ports.) Other AT commands may now be issued to the modem.

  • Page 14: Sim Check

    Raven and PinPoint GPRS Configuration Raven GPRS User Guide Version 1.08 If your modem lights look like the above when the modem is powered on, you do NOT need to configure the modem and may skip this section. If, however, the Reg light is not lit, your modem may need a SIM, or you may need to select the PDP context.

  • Page 15: Remote Configuration

    Raven and PinPoint GPRS Configuration Raven GPRS User Guide Version 1.08 3.3 Remote Configuration Once the modem is online and registered, it can be contacted from a remote location via a setup that connects to the GPRS network using the same APN as the target modem.

  • Page 16: Windows Dial-Up Networking Setup

    Windows Dial-Up Networking Setup Raven GPRS User Guide Version 1.08 4. Windows Dial-Up Networking Setup This section describes the setup of Windows to enable communications over the GPRS network. Windows 2000 is used as the example because it the one Windows OS revision that carries the most similarity to both Windows 98 as well as Windows 4.1 Add Windows Modem Driver...
  • Page 17 Windows Dial-Up Networking Setup Raven GPRS User Guide Version 1.08 4. Check "Don't detect my modem..." and select Next. 5. Select "(Standard Modem Types)" from the Manufacturers and then select "Standard 33600 bps Modem" under Models. 6. Select Next. AirLink Communications, Inc.
  • Page 18 Windows Dial-Up Networking Setup Raven GPRS User Guide Version 1.08 7. Check Selected Ports, then select the COM port the modem is connected to and select Next. 8. Select Finish to exit the "Install New Modem" wizard. 9. You should see the modem added to the correct COM port.

  • Page 19: Windows Dial-Up Networking (Ppp) Configuration

    Windows Dial-Up Networking Setup Raven GPRS User Guide Version 1.08 4.2 Windows Dial-Up Networking (PPP) Configuration This section describes how to setup a Windows Dial-up Networking connection for an AirLink GPRS Modem. Windows 2000 Professional was used in this example. The connection uses PPP to communicate to the modem and gain access the Internet.
  • Page 20 Windows Dial-Up Networking Setup Raven GPRS User Guide Version 1.08 3. When the Connection Wizard starts, select Next. 4. Select "Dial-up to private network" and select Next. AirLink Communications, Inc. Page 18 September 29, 2003...
  • Page 21 Windows Dial-Up Networking Setup Raven GPRS User Guide Version 1.08 5. Check the box next to "Modem – Standard 33600bps" and select Next. 6. Enter the Phone Number: 10001 and then select Next. 7. Select whether you want all users or just yourself to have access to this connection, and select Next.
  • Page 22 Windows Dial-Up Networking Setup Raven GPRS User Guide Version 1.08 14. “Connect using” should have a check next to “Modem – Standard 33600bps Modem (COMx).” 15. Enter “10001”for the “Phone number”. 16. Uncheck "Use dialing rules" and check “Show icon in taskbar when connected.”...
  • Page 23 Windows Dial-Up Networking Setup Raven GPRS User Guide Version 1.08 23. Check or Uncheck options as your application requires. 24. Set the "Redialing options" that will meet your needs. Note: The options shown here should work for most applications. Consult your Network Administrator for more help on connection options.
  • Page 24 Windows Dial-Up Networking Setup Raven GPRS User Guide Version 1.08 27. For "Security Optioins" check “Typical recommended settings” 28. In “Validate my identity as follows:”, select “Allow unsecured password”. Your identity and security is taken care of in the SIM.
  • Page 25 Windows Dial-Up Networking Setup Raven GPRS User Guide Version 1.08 33. Uncheck all three of the PPP Settings options. 34. Select OK. 35. In the Components section of the Networking tab, Internet Protocol (TCP/IP) should be checked. 36. Select (highlight) Internet Protocol (TCP/IP) and then select Properties.
  • Page 26 Windows Dial-Up Networking Setup Raven GPRS User Guide Version 1.08 37. "Obtain an IP address automatically" should be checked. 38. Normally, DNS server addresses are provided during PPP negotiations. If it is necessary for you to enter DNS entries, check/enable "Use the following DNS server addresses"...

  • Page 27: Making A Gprs Data Connection

    Windows Dial-Up Networking Setup Raven GPRS User Guide Version 1.08 41. Select OK. 42. Leave the options under the Sharing tab unchecked. 43. Select OK. 4.3 Making a GPRS Data Connection To make a GPRS data connection. 1. Go to Network and Dial-Up Connections and double-click on the NewOne icon.

  • Page 28: Dynamic Ip Addresses

    Dynamic IP Addresses Raven GPRS User Guide Version 1.08 5. Dynamic IP Addresses Many modern wireless data technologies use dynamic IP addresses rather than static IP addresses. This poses a problem for AirLink customers since they cannot contact their modems unless their addresses are known. AirLink offers a family of solutions designed for the different situations existing with our customers.

  • Page 29: Ipmanager And Dynamic Dns Updates

    Dynamic IP Addresses Raven GPRS User Guide Version 1.08 5.1 IPManager and Dynamic DNS Updates The IPManager system provides a mechanism to implement a wireless Dynamic DNS service. If the IPManager settings are configured, the modem will send IP change notification messages to AirLink IPManager servers.
  • Page 30 Dynamic IP Addresses Raven GPRS User Guide Version 1.08 host connected via the serial link, you could set AT*IPMANAGER2=ppp-peer to cause updates to be sent to the serial host. AirLink Communications, Inc. Page 28 September 29, 2003...

  • Page 31: Serial Communication Modes

    This is the computer or terminal that is attached to the serial port of Host: the Raven. Also known as the DTE. Modem: The Raven GPRS. The DCE to the host. The embedded communications transceiver module. Modem: Server: A computer to which a Raven is communicating wirelessly.

  • Page 32: At Mode

    Serial Communication Modes Raven GPRS User Guide Version 1.08 6.1 AT Mode AT commands are used to configure the modem, command it to do something, or query a setting. AT commands must always be terminated by <CR> (ASCII character 0x0D).

  • Page 33: Passthru Mode

    Serial Communication Modes Raven GPRS User Guide Version 1.08 can be defined with the command AT*PRIVATEIP=192.168.100.33 substituting the desired IP address. Using a private IP insulates the PPP client from changes in IP addresses of the underlying network, as the AirLink modem will perform basic NAT-like address translation on all packets.

  • Page 34: Udp Auto Answer

    Serial Communication Modes Raven GPRS User Guide Version 1.08 The modem is in AT mode [not in a current UDP or TCP session] UDP packet assembly is affected by the values of S50 (PAD Forwarding Timeout) and S51 (PAD Forwarding Character). Data received in the serial buffer will be transmitted when the idle inter-character timeout specified in S50 (in tenths of seconds) occurs or when a character is received that matches S51 (if non-zero).

  • Page 35: Multicast Udp [Raven Only Feature]

    Serial Communication Modes Raven GPRS User Guide Version 1.08 the Destination IP and Port in each to point to each other. Serial data will then be sent reliably between the two Although it adds reliability, the simple implementation of the Reliable UDP mode in the modem does not check for duplicate packets.

  • Page 36: Tcp Auto Answer

    Serial Communication Modes Raven GPRS User Guide Version 1.08 The TCP session will be terminated if no data is transmitted or received for the time interval specified in TCPT and TCPS. TCPT is the number of minutes [TCPS=0] or seconds [TCPS=1] used for this idle timeout.

  • Page 37: Slip Mode

    Serial Communication Modes Raven GPRS User Guide Version 1.08 6.8 SLIP Mode SLIP mode is entered be using the “AT\ASLIP” command. As in PPP Mode, the IP address that the host assumes is affected by the setting of S300. SLIP does not negotiate the IP with the host, so before making a SLIP connection, the host SLIP driver must be configured to use the IP specified by querying S110.

  • Page 38: Configuring The Remote Ravens

    Serial Communication Modes Raven GPRS User Guide Version 1.08 ATMLISTX1B=123.456.133.45 Continue until all the remotes are entered. There can be a total of 20 remote ID/Local addresses entered into a Raven. Note a special build Raven Modbus Host version is available that allows up to 100 entries in the list.
  • Page 39 Serial Communication Modes Raven GPRS User Guide Version 1.08 A new IP update will be sent anytime the remote Raven detects that its IP has changed. A periodic update is a redundant process that guarantees the host Raven will be updated in the event the host Raven loses its IP list for any reason or the remote Raven’s IP is changed or dropped without notification to the remote Raven.

  • Page 40: Using At Commands

    Using AT Commands Raven GPRS User Guide Version 1.08 7. Using AT Commands Use a terminal emulation program to connect up to the modem either locally (via the serial port of a computer) or remotely (over an existing internet connection on a PC to the modem at a remote location).

  • Page 41: Gprs Specific At Commands

    Using AT Commands Raven GPRS User Guide Version 1.08 7.1 GPRS Specific AT Commands These AT commands are specific to the GPRS devices and networks. Command Description +CGDCONT=cid, Define the PDP context. Must be defined before a connection can be made to the GRPS network.
  • Page 42 Using AT Commands Raven GPRS User Guide Version 1.08 Command Description +RCIQ? Returns the current cell information. AT+RCIQ? Serving Cell Info: BSIC: 5 TCH: 563 RSSI: -82dBm LAC: 6035 Cell ID: 4043 Dedicated Channel Info: TCH: 564 Channel Mode: 0...

  • Page 43: Raven And Pinpoint At Command Reference

    Raven and PinPoint AT Command Reference Raven GPRS User Guide Version 1.08 7.2 Raven and PinPoint AT Command Reference Command Description AT Escape sequence (not preceded by AT). If modem is in a data mode, this sequence causes the modem to re- enter AT command mode.
  • Page 44 Raven and PinPoint AT Command Reference Raven GPRS User Guide Version 1.08 Command Description D[method][d.d.d.d][/ppppp] Dial a connection to a remote IP and Port using either UDP, TCP, or Telnet. method = D[method][[@]name][/ppppp] P – Establish a UDP connection T – Establish a TCP connection N –...
  • Page 45 Raven and PinPoint AT Command Reference Raven GPRS User Guide Version 1.08 Command Description Fn=d.d.d.d [?] Friends mode IP address n = Friends list index [1 – 10] d.d.d.d = IP address to be allowed to access the modem 255 = allow any number 0-255 Example: 166.129.2.255 allows access by all IPs in the range...
  • Page 46 Raven and PinPoint AT Command Reference Raven GPRS User Guide Version 1.08 Command Description Qn [?] Set or query the AT quiet-mode setting. If quiet mode is set, there will be no responses to AT commands except for data queried.
  • Page 47 Raven and PinPoint AT Command Reference Raven GPRS User Guide Version 1.08 Command Description S53= Set or query Destination IP address, port, and method. These are [method]d.d.d.d[/ppppp] [?] used as defaults for the D (Dial) AT command. method = P – UDP T –...
  • Page 48 Raven and PinPoint AT Command Reference Raven GPRS User Guide Version 1.08 Command Description S211=n [?] Ignore DTR. For applications or situations where hardware control of the DTR signal is not possible, the modem can be configured to ignore DTR. When Ignore DTR is enabled, the modem operates as if the DTR signal is always asserted.
  • Page 49 Raven and PinPoint AT Command Reference Raven GPRS User Guide Version 1.08 Command Description Xn [?] Extended Call Progress Result mode. n = 0: turn off extended result codes (Default) n = 1: turn on result codes. This adds the text 19200 to the CONNECT response.
  • Page 50 Raven and PinPoint AT Command Reference Raven GPRS User Guide Version 1.08 Command Description \APASSTHRU Set modem operation to pass through mode. This will pass any characters received on the serial port directly to the internal OEM Modem and output any characters from the internal OEM Modem out the serial port.
  • Page 51 Raven and PinPoint AT Command Reference Raven GPRS User Guide Version 1.08 Command Description *DEVICEIDX=n [?] Same as *DEVICEID except entry of the 64-bit Device ID is in hexadecimal. *DNSn=d.d.d.d Sets the DNS addresses to be returned during PPP negotiation. If the underlying communications network provides DNS addresses, they replace those specified by this command.
  • Page 52 Raven and PinPoint AT Command Reference Raven GPRS User Guide Version 1.08 Command Description *NETOK Checks wireless network connection Responds OK if connected Responds ERROR if not connected *NETPHONE? Query the device’s phone number, if applicable or obtainable. *NETPW=pw [?] The password that is used to login to the wireless network, when required.
  • Page 53 Raven and PinPoint AT Command Reference Raven GPRS User Guide Version 1.08 Command Description *UDPLAST=n [?] If enabled, sets S53 to the last accepted IP address through UDP auto answer. This can be used in conjunction with MD3 so that...

  • Page 54: Raven Installation

    Raven Installation Raven GPRS User Guide Version 1.08 8. Raven Installation This section describes what is necessary to mount the Raven, connect the antenna and connect the power. 8.1 Mounting the Raven The Raven should be mounted in a position that allows easy routing and access for the cables.
  • Page 55 Raven Installation Raven GPRS User Guide Version 1.08 Figure 2- Snap-in Mounting Bracket AirLink Communications, Inc. Page 53 September 29, 2003...

  • Page 56: Connecting The Antenna

    Raven Installation Raven GPRS User Guide Version 1.08 8.2 Connecting the antenna Install an appropriate external cellular antenna. Connect the antenna to the external jack of the bulkhead jack adapter with an appropriate RF cable. Connect the Raven antenna jack to the interior bulkhead jack with an appropriate RF cable.
  • Page 57 Raven Installation Raven GPRS User Guide Version 1.08 RAVEN LIGHTNING ARRESTOR POWER DUCT BATTERY (BATTERY MOUNTED ON 1/2" THICK PLYWOOD.) Figure 4 Raven mounted in an enclosure with RTU AirLink Communications, Inc. Page 55 September 29, 2003...
  • Page 58 Raven Installation Raven GPRS User Guide Version 1.08 Antenna Lightening Arrestor COAX OUTSIDE SERIAL CABLE ANTENNA CABLE SERIAL CABLE Raven PORT PORT (MOUNTED IN PANEL) Figure 5 - RTU to Raven setup TO EXTERNAL POWER SOURCE (AC/DC) POWER CONVERTER VOLTAGE REGULATOR...

  • Page 59: Raven Gprs Technical Specifications

    Raven GPRS Technical Specifications Raven GPRS User Guide Version 1.08 9. Raven GPRS Technical Specifications 9.1 Physical Characteristics Weight: < 1 lb. Size: 3.3” wide x 2” high x 6.8" long RF Antenna Connector: 50 Ohm TNC Serial Interface: RS232 DB-9F Rugged aluminum case 9.2 Power Specifications...

  • Page 60: Status Led Display

    Raven GPRS Technical Specifications Raven GPRS User Guide Version 1.08 9.5 Status LED Display Channel [Chan] LED Flashing = Searching for a channel On = Found a channel Link LED Off = No GPRS service On = GPRS service is available on this channel Winking off = Roaming Winking on = GSM only signal, no GPRS.

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