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Troubleshooting

Modem Configuration

B-4

Modem Configuration Checklist

Most modem problems are caused by cabling mistakes or incorrect modem configuration. However, the
following items should be verified after any modem configuration, and checked again when there is modem
trouble.

The modem must be configured to disconnect immediately when DTR is de-asserted.

The modem must assert CD (or DSR, if connected) when connected to another modem. It must not
assert CD when disconnected. The modem may optionally assert CD during outbound dialing.

The modem and MSS must agree on the flow control method and baud rate scheme.

The modem must not send result codes or messages to the MSS except optionally during outgoing
calls.

The modem should be set to restore its configuration from non-volatile memory when DTR is
dropped.

The modem should be configured to answer the phone if incoming connections are to be supported.
Generally this is done with the ats0=1 command.

The modem should not be configured to answer the phone unless the MSS asserts DTR.

Modem control must be enabled on the MSS. Using modems on ports without modem control enabled
will lead to security problems.

The Autobaud feature should be enabled only when required.

Entering Commands at the Boot Prompt

If the Boot> prompt appears on the serial console instead of the Local> prompt, one of two things may be
wrong. Either the MSS does not have enough information to boot, or the network or flash reloading
procedure has failed. If pressing the Return key does not display a prompt, press any other key. The Boot>
prompt should appear.

If the MSS does not have enough information to boot, or the network or flash reloading procedure has failed, it will
print a message to the console and wait ten seconds for serial port activity. If the MSS detects serial port activity, it
will continue booting provided the flash is good. However, if the user presses a key during that time period, the MSS
will display the Boot> prompt.

Note:

If you see the message “Will attempt another download in x minutes,” press any key for
the Boot> prompt.

A series of commands called Boot Configuration Program (BCP) commands can be entered at the Boot>
prompt to configure the MSS. These commands are a subset of the entire MSS command set. For example,
a typical TCP/IP configuration might use the following commands:

Figure B-1:

BCP Command Examples

Boot> CHANGE IPADDRESS 192.0.1.229

Boot> CHANGE SOFTWARE /tftpboot/MSS4.SYS

Boot> CHANGE LOADHOST 192.0.1.188

Boot> CHANGE SECONDARY 192.0.1.22

Boot> FLASH

% Initialization begins in 5 seconds.....

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Summary of Contents for MSS4

Page 1: ...MSS Installation Guide For MSS4 Device Servers ...

Page 2: ...t Number 900 224 Rev E WARNING This product has been designed to comply with the limits for a Class A digital device pursuant to Part 15 of FCC Rules These limits are designed to provide reasonable protection against such interference when operating in a commercial environment This equipment generates uses and can radiate radio frequency energy and if not installed and used in accordance with this...

Page 3: ...A Flash Card 2 6 Installing a Modem Card 2 7 3 Getting Started 3 1 System Passwords 3 1 Privileged Password 3 1 Login Passwords 3 2 IP Address Configuration 3 3 Using EZWebCon 3 3 Using ARP and Ping 3 3 Using a DHCP BOOTP or RARP Reply 3 4 Using the Serial Console 3 4 Incoming Logins 3 5 TCP IP Logins 3 5 Serial Port Logins 3 6 Remote Console Logins 3 6 Outbound Connections 3 7 Logout 3 7 4 Config...

Page 4: ...ms 4 13 Enabling 802 11 Networking 4 14 Region 4 14 MAC Address 4 14 Extended Service Set ID ESSID 4 15 Network Mode 4 15 Channel 4 15 WEP 4 16 Formatting an ATA Flash Card 4 17 Modem Cards 4 17 Incoming Calls 4 17 Outgoing Calls 4 17 5 Using the MSS 5 1 Incoming Connections 5 1 Socket Connections 5 1 Host Applications 5 2 Code Examples 5 2 Interactive Connections 5 2 Outgoing Connections 5 2 Sess...

Page 5: ... at the Boot Prompt B 4 C Pinouts C 1 Ethernet Connectors C 1 Fiber Link Ethernet C 1 MSS4 Serial Connectors C 1 Screw Terminal Block C 1 DB9 Connectors C 2 MSS4 PC Card Slots C 3 MSS4 Power Connectors C 3 Power Jack C 3 Screw Block Power C 4 D Updating Software D 1 Obtaining Software D 1 Via the Web D 1 Reloading Software D 1 Reloading Sequence D 1 Troubleshooting Flash ROM Updates D 3 E Specific...

Page 6: ...iv Warranty Statement Declaration of Conformity Index ...

Page 7: ...of this manual assume knowledge of the IEEE 802 11 Standard governing wireless networking If you are not familiar with wireless networking concepts and implementation please refer to the Standard or the documentation that came with your wireless PC card Throughout this manual the MSS4 may be referred to as the MSS or as the Server Model Overview There are four MSS4 models designated as D S DFP and...

Page 8: ...ion mark for help on what is appropriate at that point Note See the MSS Reference Manual for more information Reloadable Operating Software The MSS stores its operating code in Flash ROM which means that it does not have to download code at boot time If necessary you can upgrade the MSS s operating code to support additional features as newer code becomes available Also you can configure the MSS t...

Page 9: ...configuration are available in the SNMP section of this guide page 4 4 Terms The following terms are used throughout this manual Host A computer attached to the network The term host is generally used to denote interactive computers or computers that people can log into Local Mode The MSS user interface It is used to issue configuration and session management commands and to establish connections ...

Page 10: ...onfigure the required items Chapter 4 Configuration contains additional configuration information Chapter 5 Using the MSS contains information about how the MSS can be used in different applications Read this chapter to get the most out of using your MSS Appendices include Contact Information Troubleshooting Pinouts Updating Software and Specifications Read them as necessary The comprehensive Inde...

Page 11: ...ling an 802 11 Card on page 2 5 How to install an ATA Flash card Installing an ATA Flash Card on page 2 6 How to install a modem card Installing a Modem Card on page 2 7 Basic knowledge of networking installation is assumed Read this chapter completely before continuing MSS4 Components There are currently four different models of the MSS4 The following sections will discuss the specific components...

Page 12: ... of the unit All MSS4 units have four LEDs that indicate serial activity for each serial port and two status LEDs PC card models include two additional LEDs for slot status The PC Card LEDs have different meanings depending on what type of PC card is currently in use Note On MSS models that do not have PC card slots the PC Card LEDs will never light up 10 100BaseT Serial 1 Console Serial 2 Serial ...

Page 13: ... green to indicate MSS serial activity OK Blinks yellow green or red to indicate MSS activity Link Glows green or yellow to indicate a wired Ethernet connection Off Not connected to a wired Ethernet network Green Connected to a 10BASE T network Yellow Connected to either a 100BASE T or 100BASE FX network Table 2 2 PCC1 and PCC2 LEDs LED State 802 11 Cards ATA Cards Modem cards Off No card inserted...

Page 14: ...from 2 to 6 wires depending upon the desired MSS usage mode Do not over tighten the screws but make sure the wire is secure in the block Figure 2 5 Connecting Wire to Screw Terminal Blocks B Connect the other end of the cable to your serial device s serial port 2 Connect the MSS to the network via one of the following methods Connect one end of a twisted pair 10 100BASE T cable to the Ethernet net...

Page 15: ...if the code in the Flash ROMs is valid If so it loads the code and begins normal execution This step takes approximately five seconds Once the MSS is running normally the Link LED should be solidly lit to indicate a functioning wired Ethernet connection and the OK LED should blink once every two seconds 4 Supply power to the attached serial device s if necessary 5 Ensure the MSS is working There a...

Page 16: ...r color refer to Table 2 1 on page 2 3 for information on what that color means Installing an ATA Flash Card Follow these steps to properly install supported ATA flash and disk storage cards 1 Power off the MSS by unplugging its power cable 2 Insert a supported ATA Flash card into one of the PC card slots 3 If desired insert another supported ATA Flash card into the other PC card slot 4 Power up t...

Page 17: ... slot slot 2 will appear as Port 6 If you are an SDK user you can access the port by using device tt4 for port 5 or tt5 for port 6 Follow these steps to properly install supported modem cards 1 Power off the MSS by unplugging its power cable 2 Insert a supported modem card into one of the PC card slots 3 If desired insert another supported modem card into the other PC card slot 4 Power up the MSS ...

Page 18: ...ecome the privileged user see Privileged Password on page 3 1 The MSS IP address must be configured before any TCP IP functionality is available see IP Address Configuration on page 3 3 Only one person at a time may be logged into the remote console port port 7000 This eliminates the possibility of several people simultaneously attempting to configure the MSS Although passwords can be required rem...

Page 19: ...Login Password Serial Port Logins To require a password for any connections to the MSS from its serial ports enable password protection with the Change Port Portlist Password Protect Enabled command The command allows you to specify the serial ports for which you want to provide password protection Figure 3 4 Enabling Password Protection for Serial Port Logins Telnet and Rlogin Connections To requ...

Page 20: ...ult value should be correct in most cases D For Loadhost enter the IP address of the loadhost where you intend to store your operating code and SDK files if used 4 Click OK 5 Wait for instructions from EZWebCon Using ARP and Ping The ARP ping method is available under UNIX and Windows If the MSS has no IP address it will set its address from the first directed IP packet it receives On a UNIX host ...

Page 21: ...he MSS to use to configure an IP address when the unit boots See the host based documentation pages for configuration information Keep in mind that many BOOTP daemons will not reply to a BOOTP request if the download file name in the configuration file does not exist If this is the case create a file in the download path to get the BOOTP daemon to respond BOOTP and RARP are enabled by default on t...

Page 22: ...enabled by default This behavior can be changed with the Change Server Incoming command and one of the following parameters Telnet Enables incoming Telnet logins None Disables all incoming logins For security reasons you may wish to disable incoming logins Incoming logins for a port can be disabled with the Change Port Portlist Access command see Access Mode on page 4 8 for more information Note A...

Page 23: ...net Connection Rlogin Rlogin allows users to connect to a remote device as if they were on the local network Rlogin is enabled by default To log into the MSS type rlogin followed by the MSS IP address Figure 3 14 An Rlogin Connection Serial Port Logins Attach a terminal to one of the serial ports and press the Return key The Local prompt should be displayed Proceed to the Configuration chapter to ...

Page 24: ...ns When logged into the MSS users can make basic outgoing connections using the methods described in this section See the MSS Reference Manual on the CD ROM for more information about incoming and outgoing connections Note If you Telnet into the MSS you cannot make outgoing connections To start an outgoing Telnet session type Telnet at the Local prompt followed by either the host s name or its num...

Page 25: ... The full command set is discussed in detail in the MSS Reference Manual Rebooting the MSS There are two types of reboots for the MSS A normal reboot simply restarts the MSS A factory reboot restores default configurations for the MSS removing any custom settings Normal Reboot You should use use a normal reboot if you have configured custom settings that will not take effect until after the MSS ha...

Page 26: ...parts of the IP address which is then applied to the addresses of both the MSS and the remote host If the resulting addresses are identical the connection is deemed local and the host is contacted directly If not the connection attempt and all subsequent messages to this host will be directed to the MSS s gateway host for forwarding All hosts must agree on the subnet mask for a given network When ...

Page 27: ... address The MSS also allows you to set a default domain name to be appended to any host name for the purpose of name resolution When a user types a host name the MSS will add this domain name and attempt the connection Name checking applies to any MSS commands that require text name resolution such as Telnet Rlogin and Ping To set the default domain enter the Change Server Domain command followed...

Page 28: ... list of items that can be queried and or set and the type of data used such as integer and string are both documented in various Management Information Bases MIBs MIBs cover a variety of things such as counters and IP address resolution tables The MSS supports the following MIBs The MSS will respond to queries for unknown MIBs with a not in MIB error to the to the requesting host SNMP Trap Suppor...

Page 29: ...32 networking they can also be configured for RS 485 networking The RS 485 standard allows a serial connection to be shared like a party line As many as 32 devices can share the multidrop network Typically one device is the master and the other devices are slaves There are a few important things to note about RS 485 networking with the MSS The MSS can be used in either two wire or four wire mode R...

Page 30: ...utomatic see TXDrive on page 4 7 If you enable two wire mode and TXDrive is set for Always the MSS will return an error Four wire Mode In four wire mode the MSS operates in full duplex one pair of wires functions as the transmit pair another pair of wires functions as the receive pair and there is a shield ground wire for each pair The MSS is able to send and receive data simultaneously In a four ...

Page 31: ...mode The Always parameter has no effect for two wire mode Termination RS 485 connections must be terminated properly in order to work Termination is necessary when using long cable runs although only end nodes should be terminated The termination option is disabled by default Figure 4 14 Enabling RS 485 Termination RS 422 Networking The MSS is compatible with RS 422 networks in four wire RS 485 mo...

Page 32: ...isabled the default Autostart can also be triggered by a specific input character As the MSS does not have a default Autostart character you will have to configure one For example when using modem emulation mode you may want to use A so that Autostart will happen as soon as an AT modem command is entered See Modem Emulation Mode on page 5 10 for more information Keep in mind that when you configur...

Page 33: ...y whether the trigger characters will be sent to the host as part of the serial data or whether they should be discarded the default For example the following commands will cause the accumulated serial data to transmit as soon as the Z character is detected in the data stream and to send the matched character Z to the host as part of that data Figure 4 21 Transmitting Serial Data with a Character ...

Page 34: ...ow by sending particular characters through the data stream Ctrl Q to accept data XON and Ctrl S when data cannot be accepted XOFF Note Applications that use Ctrl Q and Ctrl S will conflict with XON XOFF flow control in which case RTS CTS is recommended To switch between flow control methods for a serial port use the Change Port Portlist Flow Control command followed by the preferred method If you...

Page 35: ...serial port enter the Change Port Portlist Modem Control command The following example enables modem control for all four serial ports Figure 4 26 Enabling Modem Control Signal Checking When signal checking is enabled the MSS will check for the presence of an asserted Data Signal Ready DSR input signal before allowing incoming network connections to the enabled serial port Network connections to t...

Page 36: ...een inactive for a pre determined length of time To manually log out of the MSS type Logout at the Local prompt or press Ctrl D Figure 4 30 Logging out of the MSS To log out a port after a specified period of inactivity use the Change Port Portlist Inactive Logout command This command works in conjunction with Change Server Inactive Timer which defines how long a port must remain idle before it is...

Page 37: ...onfiguration options will be available on all 802 11 cards If you try to enter an option that is not supported by your card you will receive an Error message Note Even though the MSS4 has two PC card slots you can only install one 802 11 card The card can be installed in either slot This section assumes that you understand IEEE 802 11 concepts and architectures If you do not please refer to the IE...

Page 38: ...card is present the MSS will use the wireless network and ignore any wired Ethernet settings If no compatible PC card is present the MSS will use the 10 100BASE T or 100BASE FX Ethernet interface If you want the MSS to only look for a wired Ethernet connection you must disable 802 11 Figure 4 35 Disabling 802 11 Note You must reboot the MSS after enabling or disabling 802 11 networking Region When...

Page 39: ...ching between wired and wireless networking Figure 4 37 Configuring the MAC Address Extended Service Set ID ESSID Whenever there is more than one ESS in a wireless LAN architecture devices need to be told which ESS they belong to The ESSID ensures that devices communicate with the right AP To tell the MSS which ESS it belongs to enter the Change 80211 ESSID command The exact string you enter will ...

Page 40: ...annel number so that the MSS can start a new IBSS if needed When the channel is set to Any the MSS can only join an existing IBSS Figure 4 40 Configuring the 802 11 Channel A direct sequence 802 11 network on one channel will affect reception on channels up to two numbers away For best performance on collocated wireless networks you should select channels that are at least five channels apart from...

Page 41: ...S does not support PC card hot swapping Any time you insert a PC card into an MSS PC card slot you must reboot the MSS ATA cards must be formatted before you can use them with your MSS To format an installed ATA card issue the Disk Format command for either pccard1 if the card is in the top PC card slot or for pccard2 for the bottom slot This command erases all the existing data on the card and fo...

Page 42: ... may not be able to respond correctly This is in contrast to most other types of PC cards which the MSS cannot use until properly configured SDK users can access the ports by using device tt4 for Port 5 or tt5 for Port 6 See your SDK documentation for more information on the SDK environment Incoming Calls The MSS will attempt to answer any incoming call that it detects You will get a Local prompt ...

Page 43: ...has a node address and each node address can allow connections on one or more sockets Sometimes these sockets are referred to as ports TCP IP connections can be made directly to one of the MSS serial ports using sockets Note If a serial port is in use the socket connection will be refused There are two categories of sockets Well known sockets are those that have been defined in RFCs Requests for C...

Page 44: ... IP socket interface When a host application makes a socket connection to the MSS it uses the socket as a data pipe to send and receive data The host application performs general read write tasks and works with the MSS as if it were a directly attached serial device Code Examples The MSS distribution CD ROM includes example code for TCP applications Refer to the Readme file included with the code ...

Page 45: ...isabled by default on the MSS Session Control When a user connects to a network service via Telnet Rlogin a session is created A user can open several connections to various hosts at once although only one is displayed on the screen at a time Each separate connection is a session The following section explains commands used to manipulate sessions Break Key and Local Switch The Break key allows use...

Page 46: ...key while working in Conan he would move to his session on Thor The Change Port Portlist Backward Switch and Change Port Portlist Forward Switch commands define keys used to switch sessions without returning to local mode Backward and forward switch keys must be explicitly defined To specify a control character use escaped hex xx The example below sets Ctrl B ASCII character 0x02 as the backward s...

Page 47: ...ial port including settings such as flow control baud rate parity and default hosts In addition it shows the status of DSR and DTR serial signals port access type and login status Errors are summarized although in less detail than in the Show Server Counters display Show RS485 Show RS485 displays the current settings for RS 485 serial connections including wire mode two wire or four wire terminati...

Page 48: ...TA Flash cards for portable storage of local MSS files For more details on creating and managing files read the Disk command section in the MSS Reference Manual Flash Disk The MSS contains a Flash disk flash rewriteable memory that allows you to customize your MSS Any data that you want the MSS to save after it is rebooted should be stored on the Flash disk Note If there is a power glitch during r...

Page 49: ...tialize Delay 0 command is used to reboot the unit SDK The Lantronix Software Developers Kit SDK allows you to customize the behavior of your MSS in more ways than are available via the standard command set You can write programs for the MSS that handle serial and network data and store the finished programs on the flash disk so they always run when the MSS boots For more information on the Lantro...

Page 50: ...etwork and serial port parameters have been configured properly and n represents the port number of the attached device for that MSS the two Servers would be configured as follows MSS_A Local CHANGE PORT n DEDICATED TCP 192 168 5 10 3001T Local CHANGE PORT n AUTOSTART ENABLED MSS_B Local CHANGE PORT n ACCESS REMOTE Local CHANGE PORT n DEDICATED NONE Local CHANGE PORT n AUTOSTART DISABLED Note If t...

Page 51: ...om one point to another There are a few important things to note about multihost connections The MSS attempts to send data in the order it is received That is it reads in and sends data from one host before reading in data from another host The MSS will ping TCP and UDP hosts before sending connect attempts to make sure the remote hosts are alive If they are alive the MSS connects for real and pas...

Page 52: ... charges for each connection With the MSS in modem mode you can replace your modems with MSS units and use an Ethernet connection instead of a phone call all without having to change communications applications You can then connect to any remote machine that has an MSS without making potentially expensive phone calls Note If the MSS is in modem emulation mode and the serial port is idle the MSS ca...

Page 53: ... to form a raw TCP connection to socket 3001 ATE Echo mode off ATE0 or on ATE1 the default ATH Disconnects the network session ATI Displays modem version information ATQ Result codes on ATQ0 the default or off ATQ1 ATS Allows serially attached devices to control how the MSS accepts a network call ATS0 0 will cause the MSS to send the RING string to the serial device when it receives a network conn...

Page 54: ...s that the modem the MSS is ready to accept commands all the time and the MSS can close the network connection when the device disconnects The MSS DTR out goes to the serial device s CD in That way the MSS can signal the serial device that there is a valid connection and the serial device will know it can send data to the remote device COM Port Redirector The Lantronix Com Port Redirector applicat...

Page 55: ...including the information from a Netstat command Description of the problem Debug report stack dump if applicable Status of the unit when the problem occurred please try to include information on user and network activity at the time of the problem Full Contact Information Address 15353 Barranca Parkway Irvine CA 92618 USA Phone 949 453 3990 Fax 949 453 3995 World Wide Web http www lantronix com N...

Page 56: ...or Messages Problem Message Error Remedy The MSS is connected to a power source but there is no LED activity The unit or its power supply is damaged Contact your dealer or Lantronix Technical Support for a replacement The MSS is unable to complete power up diagnostics This generally indicates a hardware fault One of the LEDs will be solid red for three seconds followed by one second of another col...

Page 57: ...oad new Flash ROM code from a network host If the OK LED blinks rapidly the Flash ROM code may be corrupt Reboot the unit If you get the same message you will need to reload Flash ROM See Reloading Software on page D 1 If you did not request a TFTP boot the flash ROM code is corrupt The unit will remain in boot mode Table B 2 DHCP Troubleshooting Area to Check Explanation DHCP is enabled on the MS...

Page 58: ...e complete pathname for the download file in the BOOTP configuration file or add a default pathname to the download filename The MSS and host are in the same IP network Some hosts will not allow BOOTP replies across routed IP networks Either use a host running a different operating system or put the MSS in the same IP network as the host Table B 4 RARP Troubleshooting Area to Check Explanation The...

Page 59: ...aud feature should be enabled only when required Entering Commands at the Boot Prompt If the Boot prompt appears on the serial console instead of the Local prompt one of two things may be wrong Either the MSS does not have enough information to boot or the network or flash reloading procedure has failed If pressing the Return key does not display a prompt press any other key The Boot prompt should...

Page 60: ...itself with full functionality If the loadfile is not found the server will attempt to reload continuously If there is an error or if the console s Return key is pressed the MSS will re enter the Boot Configuration Program Change BOOTP Enabled Disabled Enables or disables the sending of BOOTP queries during the boot sequence It is enabled by default Change DHCP Enabled Disabled Enables or disables...

Page 61: ... the user For more information see Appendix D TCP IP users must use the Software option to specify the loadhost the loadfile and their own network address TFTP users can specify a complete path name up to 31 characters if the file is located in a directory other than the default The case of the filename must match that of the filename loaded onto the host computer Show Server Use this command when...

Page 62: ...ws the fiber link connector pin connections which use the duplex ST connector interface one transmitter one receiver Figure C 2 Fiber Optic Connectors MSS4 Serial Connectors The MSS4 has four serial ports The MSS4 D models have DB9 connectors while the MSS4 S models have screw terminal blocks Screw Terminal Block The following sections show the pin connections of the MSS4 screw terminal blocks whi...

Page 63: ... of the MSS4 RS 232 screw terminal block Figure C 4 RS 232 Screw Terminal Block DB9 Connectors The following sections show the pin connections of the MSS4 DB9 connectors which provide dual RS 232 RS 485 serial ports RS 485 DB9 Connectors The MSS4 DB9 connector provides an RS 485 serial port Figure C 5 DB9 RS 485 Serial Connector G r o u n d N C R X R X T X T X N C 7 1 G r o u n d D S R C T S R X T...

Page 64: ...ng PC cards modem cards and a selection of ATA storage cards For the most current information on which PC card technologies are supported and which cards are compatible with the MSS4 please refer to the Lantronix web site Note Changes in firmware revision may affect compatibility MSS4 Power Connectors Power is supplied to the MSS using one of the connectors mentioned in this section Power Jack The...

Page 65: ...Pinouts Screw Block Power C 4 Screw Block Power The MSS4 also has a 9 30V DC screw block power jack Figure C 8 Screw Block Power V V Shield ground ...

Page 66: ...software file name should not be changed The download file should be world readable on the host There is a sixteen character length limit for the path name There is a twelve character limit for the filename Use the List Server Boot command to check settings before rebooting Note Before using the Initialize Reload command check your settings to ensure that you are reloading the correct software fil...

Page 67: ...te For instructions on how to log into the MSS to enter these commands see the Getting Started chapter The path and filename are case sensitive and must be enclosed in quotation marks When attempting to boot across an IP router you must configure the router to proxy ARP for the MSS or use the bootgateway feature For more information see Bootgateway in the Commands chapter of the MSS Reference Manu...

Page 68: ...ns Ensure the loadhost name and address are specified correctly and that their case matches that of the filenames on the host system Ensure the file and pathnames are enclosed in quotes to preserve case Ensure that TFTP is enabled on the host several major UNIX vendors ship their systems with TFTP disabled by default MOP Ensure that the Ethernet circuit must has the service characteristic enabled ...

Page 69: ... V DC Operating current 0 8A 12 V Power consumption 10 Watts maximum MSS4 DFP SFP Adaptor The MSS4 DFP and MSS4 SFP power cube adaptor has the following specifications Adapter input voltage 110 V AC US 220 V AC International Adapter output voltage 12 V DC Operating current 1 5A 12 V Power consumption 18 Watts maximum Environmental Information Temperature Limitations Operating range 5 to 50 C 41 to...

Page 70: ...e 10 to 90 noncondensing 40 to 60 recommended Storage range 10 to 90 noncondensing Altitude Limitations Operating 2 4 km 8 000 ft Storage 9 1 km 30 000 ft When operating the MSS above 2 4 km 8 000 ft decrease the operating temperature rating by 1 8 C for each 1 000 m 1 F for each 1 000 ft ...

Page 71: ...g con tract between the parties Any such contract states the entire obligation of Lantronix The contents of this document shall not become part of or modify any prior or existing agreement commitment or relationship The information recommendation description and safety notations in this or other documents supplied by Lantronix are based on general industry experience and judgment with respect to s...

Page 72: ... 4 4 1995 Electrical Fast Transient Test IEC 6100 4 5 1995 Power Supply Surge Test IEC 6100 4 6 1996 Conducted Immunity Test IEC 6100 4 8 1993 Magnetic Field Test IEC 6100 4 11 1994 Voltage Dips Interrupts Test L V D Directive 73 23 EEC Supplementary Information This Class A digital apparatus complies with Canadian ICES 003 CSA and has been verified as being compliant within the Class A limits of ...

Page 73: ...ed port service 4 12 Defaults restoring 4 1 B 5 DHCP 1 1 2 5 3 4 B 2 B 5 D 2 Troubleshooting B 2 Displaying current settings B 6 Domain name 1 1 Domain name server DNS 1 3 4 3 Download file B 3 DSR Data Signal Ready 4 8 4 11 B 4 DSRLogout 4 11 DTR Data Transmit Ready 4 11 B 4 DTRWait 4 12 E Encrypted sessions 5 7 Environment strings 5 3 Escaped hex 5 4 ESSID 4 15 Ethernet Address B 5 Fiber 2 1 2 4...

Page 74: ... overview 1 1 Modem Configuration checklist B 4 Control 4 8 4 11 DTRWait 4 12 Emulation 4 8 5 10 Modem cards 2 7 4 17 LEDs 2 3 Monitoring counters B 4 MOP Reloading software D 2 Multihost mode 5 9 N Nameserver 1 1 4 3 Network mode wireless 4 15 Node 1 3 NVRAM B 5 O OK LED 2 5 Outbound connections 3 7 P Parity 4 10 Passflow 4 10 Password Encryption 5 7 Login 3 2 Privileged 3 1 Passwords 1 2 3 1 PC ...

Page 75: ...ity 1 2 Serial Access mode 4 8 Dedicated port service 4 12 Device connecting 2 4 Flow control 4 10 LED 2 5 Modem control 4 8 Modem signals 4 10 Port 2 1 2 2 3 6 4 7 C 1 Port parameters 2 4 4 10 Preferred port service 4 12 Prompts 4 12 Serial console 3 4 3 6 Serial LED 2 2 Serial tunnel 5 8 Server 1 3 Session 1 3 SNMP 4 4 Community name 1 3 Traps 4 4 Sockets 3 1 5 1 TCP IP 5 2 Software Developer Ki...

Page 76: ...Index iv U UDP 1 3 5 9 Updating software D 1 W Web browser interface 1 2 3 5 WEP 4 14 4 16 Index Number 4 16 Key 4 16 WINS 4 4 Wireless See 802 11 ...

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