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W&T 58620, Manual

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54

W&T

Modem Operation

5.4.12 &C (AT&C[0|1])

DCD Option

Default setting: 1 = ON

This command defines the behavior of the DCD interface
output:

•

&C0

DCD is always active regardless of the network-side
connection status.

•

&C1

D C D   i s   o n l y   a c t i v e   i f   t h e r e   i s   a   c o n n e c t i o n   t o   a
communication partner.

Summary of Contents for 58620

Page 1: ...Release 2 0 January 2010 Model 58620 Firmware 2 10 or higher Manual LAN Modem W T...

Page 2: ...form us of any error or misunderstanding you come about so we can identify and eliminate it as soon as possible Carry out your work on or with W T products only to the extent that they are described h...

Page 3: ...ehaves in a way this is compatible with standard modems for the telephone system the only difference is that the dial up number is replaced by an IP address Modem Intranet Internet ATDT Tel No RS232 R...

Page 4: ...23 3 1 Ethernet connection 24 3 2 RS232 interface 26 3 3 Supply voltage 27 3 4 LED displays 28 4 LAN Modem operation settings 29 4 1 Standard mode LAN Modem LAN Modem 30 4 2 Mode LAN Modem Virtueller...

Page 5: ...7 5 4 26 AT 68 Appendix 69 A1 Extended configuration of the LAN Modem 70 A1 1 Starting the Telnet session 70 A1 2 Configuration of the TCP server port Local Port 71 A1 3 Configuration of the System Na...

Page 6: ...6 W T...

Page 7: ...n 1 Quickstart Already experienced users of LAN Modems will find on the two following pages a flow chart with the essential steps for start up as well as the configuration Detailed information can be...

Page 8: ...age LAN Modem Windows PC with TCP IP WuTility installed yes Connect network cable Finish Network no Optain IP address subnet mask gateway address Install WuTility with product CD Button IP address Ent...

Page 9: ...ardware connection Auto negotiating IP address 0 0 0 0 Gateway address 0 0 0 0 Subnet mask 255 0 0 0 DHCP Active TCP port for incoming calls 8000 1To prevent unintended address assignments or changes...

Page 10: ...10 W T Quickstart...

Page 11: ...rator will provide you with this If you have only a small network with no routing use the IP address of your PC and simply change the last digit The IP address must be unique within the network Assign...

Page 12: ...ttings in the LAN Mo dem i e even changes to parameters not matching the network are easily made Any system password which has been set must however in this case be known Downloading and installing Wu...

Page 13: ...ts IP address is 0 0 0 0 Select the LAN Modem and click on the IP address button To use the LAN Modem with dynamic IP parameters select in the following dialog box the corresponding option DHCP or BOO...

Page 14: ...e network side startup of the LAN Modem With the exception of a few special settings the rest of the configuration is done as for a standard dial up modem using the serial port and AT commands 1Changi...

Page 15: ...le modem cable see section RS232 interface The serial transmission parameters of the terminal program you use should be set to 9600 baud no parity 8 bits 1 stop bit no handshake Reset the LAN Modem by...

Page 16: ...e the DHCP or BOOTP RARP client enter one of the following options directly appended no space to the IP address and confirm with Enter 0 DHCP and BOOTP RARP OFF 1 DHCP OFF BOOTP RARP ON 2 DHCP ON BOOT...

Page 17: ...prevent unintended address assignments or changes we recommend deactivating the DHCP and BOOTP RARP protocols if they are not expressly used in the respective network environment LAN Modems with inco...

Page 18: ...m name of a LAN Modem with the Ethernet address 00 c0 3d 01 02 03 is LanModem_010203 The system name of the LAN Modem can be changed in the configuration For additional information refer to the sectio...

Page 19: ...possible 2 3 4 Reserved IP addresses A LAN Modem provides services which other clients in the network can make use of as needed To open a connection they of course need the current IP address for the...

Page 20: ...they are not expressly used in the respective network environment LAN Modem with incorrectly assigned IP addresses can be easily found after the fact using the scan function of the WuTility managemen...

Page 21: ...ce the administrator has made the necessary entries the LAN Modem obtains the desired IP address automatically after each reset To ensure accessibility of the LAN Modem even should the BOOTP server go...

Page 22: ...22 W T Assigning the IP address...

Page 23: ...23 W T Subject to error and alteration 3 Interfaces and displays Ethernet interface Serial interface Supply voltage LED displays...

Page 24: ...tor The pin assignments shown below correspond to an MDI interface so that the connection to the hub or switch is made using a max 100m long 1 1 shielded patch cable 1 2 3 4 5 6 7 8 Direction Out Out...

Page 25: ...ion speeds and duplex mode Information on toggling between Auto Negotiation and fixed transmission speeds can be found in the section Expanded LAN Modem Settings 1Managable switches often have special...

Page 26: ...signals These can be modified using the respective AT commands Factory setting Active for existing connection Data output Data input If deactive break connection and do not accept new connection until...

Page 27: ...t in on the adjacent screw terminals on the underside of the housing DC voltage of any polarity or AC voltage may be used The reverse polarity protection results in the following various maximum and m...

Page 28: ...odes to indicate error states on the device or serial port 1 x flashing Check network connection The LAN Modem is not receiving a link pulse from a hub Check the cable and hub 2 x flashing 3 x flashin...

Page 29: ...ttings In addition to the traditional paired operation of the W T LAN Modem it is also possible to communicate on a Windows computer using virtual modem ports Standard mode Download and installation o...

Page 30: ...the calling and receiving side Starting with an AT dial up command ATD the calling LAN Modem opens a TCP connection to the destination system In response to this incoming call the character sequence...

Page 31: ...ing sections contain only a brief guide to the function of the W T COM Port Redirector and modem ports Additional information on all configuration options for the W T COM Port Redirector can be found...

Page 32: ...the configuration tool in the Windows Start menu under W T COM Port Redirector is created The W T COM Port Redirector is uninstalled using Windows software administration Start the Software applet in...

Page 33: ...settings Subject to error and alteration The optional name entered here is used only for identifying the port within the inventory list of the W T COM Port Redirector It has no effect on the actual o...

Page 34: ...34 W T LAN Modem operation settings...

Page 35: ...ith an AT command set except that the TCP IP LAN takes the place of the telephone line As far as the controlling application or controlling device is concerned all that needs to happen is that the pre...

Page 36: ...format is factory set Baud 9600 Data bits 8 Parity none Stop bits 1 Flow control RTS CTS The AT commands AT Bn AT Dn AT Pn and AT Sn can be used to select the following alternate transmission speeds...

Page 37: ...are finished with a CR letter number letter number letter number letter number Non supported AT commands such as V or L2 have no effect and are simply ignored Invalid commands on the other hand gener...

Page 38: ...ilable while there is a connection to a communications partner The AT command interpreter is now deactivated and all incoming serial data are passed into the network without any further processing To...

Page 39: ...tion Modem response to DTR option Flow control between modem and terminal Restore Display configuration profiles connection data Active profile write Active profile read Destination IP address write B...

Page 40: ...A Accept incoming call If the serial application detects an incoming call by means of the RING sequences send by the LAN Modem the call can be picked up by sending this command After the network conne...

Page 41: ...cters these characters have no effect on the connection set up By this means it is possible to continue using an application that employs at this point for example a T for using tone dialing IP addres...

Page 42: ...lue the addresses stored in position 0 is used The command Zn is used to write to the non volatile address memory L When using L instead of the IP address the dial up is repeated using the last used v...

Page 43: ...Register S7 and is factory set to 50s BUSY No network connection to the desired communication partner could be established The cause of this may be a station that is already busy with another connecti...

Page 44: ...peration 5 4 3 E ATE 0 1 Local echo off on This command determines whether the data received on the RS232 interface in command mode should lbe returned The factory setting is for echo on ATE0 Echo off...

Page 45: ...45 W T Modem Operation Subject to error and alteration 5 4 4 H ATH Quit connection This command quits the connection Both serial communication partners receive the reply NO CARRIER...

Page 46: ...m Of a possible 0 8 only the following parameters are presently used ATI0 Returns product code 58210 from the LAN Modem ATI3 Returns the firmware version and date of the AT command interpreter ATI4 Re...

Page 47: ...ng connection from command to data mode If you need for example to change LAN Modem parameters during a connection you must first use the Escape sequence to switch to command mode Af ter the desired r...

Page 48: ...5 4 7 Q ATQ0 1 Modem replies on off Default setting 0 ON Replies generated by the LAN Modem such as OK or CONNECT can be turned off by using the Q command ATQ0 The LAN Modem sends replies ATQ1 Reply m...

Page 49: ...or and alteration 5 4 8 Sn ATS 0 40 Read S register This command is used to read the 41 S registers that determine the operating behavior of the LAN Modem Changing or writing to the S registers is don...

Page 50: ...urn Code for LF Linefeed Code for BS Backspace Wait time for TCP connection set up seconds Waits until other party picks up seconds Time base for carrier generation 1 10 seconds Allowed Carrier dropou...

Page 51: ...to error and alteration Registers S14 S21 S23 and S39 should not be accessed by direct writing but rather via the corresponding AT commands The value of register S9 is adjusted to the value of S10 ea...

Page 52: ...N This command specifies whether result returns from the LAN Modem are to be numerical or in plain text The following messages and result codes are possible 0 OK 1 CONNECT 2 RING 3 NO CARRIER 4 ERROR...

Page 53: ...ying 0 or 1 you can select one of the two available reset profiles see also Wn command Which profile is loaded after the LAN Modem is turned on is defined by the Yn command Load stored reset profile 0...

Page 54: ...DCD Option Default setting 1 ON This command defines the behavior of the DCD interface output C0 DCD is always active regardless of the network side connection status C1 DCD is only active if there is...

Page 55: ...LAN Modem is in data mode k an ON r OFF change places the modem in command mode The ATO command can be used to return to data mode D2 A change from ON r OFF breaks the existing connection A new connec...

Page 56: ...settings which can be invoked using the commands AT F and AT F1 The defaults specified by the individual commands refers basically to the factory profile 0 Factory profile 1 differs here in the funct...

Page 57: ...is an enable level on its RTS input An impending overflow of the serial input buffer is signaled by the CTS output K4 Xon Xoff Flow control is handled by the control characters Xon hex 11 and Xoff hex...

Page 58: ...Default setting 0 This command defines the behavior of the DSR output S0 The DSR output is always enabled regardless of the connection status and regardless of the mode command or data S1 DSR is only...

Page 59: ...he data stored in non volatile profiles 0 and 1 In addition the stored destination addresses are output V1 The LAN Modem returns statistics for the last TCP IP connection V2 The LAN Modem sends as a r...

Page 60: ...configuration profiles are specified by the command Zn Which of the two profiles is active after the LAN Modem is turned on is defined by the command Yn Additional information can be found in the foll...

Page 61: ...profiles the LAN Modem uses after being turned on or after a reset Y0 Specifying the configuration profile 0 after a reset Y1 Specifying the configuration profile 1 after a reset Additional informatio...

Page 62: ...em can save up to 4 destination IP addresses in its non volatile memory which can later be recalled using the fast dial function Sn x of the dial command Example AT Z1 172 16 2 2 IP address 172 16 2 2...

Page 63: ...lowing speeds are available Command B2 B3 B4 B5 B6 B7 B8 Baudrate 1200 2400 4800 9600 19200 38400 57600 1The B command has a delayed effect The first OK reply is still with the old baud rate 1Successi...

Page 64: ...the serial character format works with 7 or 8 data bits 1The D command has a delayed effect The first OK reply is still with the old data format 1Successive commands in the same command line such as...

Page 65: ...yes what parity is used for the serial data format P0 no parity P1 odd parity P2 even parity 1The P command has a delayed effect The first OK reply is still with the old data format 1Successive comma...

Page 66: ...rmines how many stop bits minimum appear between 2 serial characters 1The S command has a delayed effect The first OK reply is still with the old data format 1Successive commands in the same command l...

Page 67: ...nfiguration data is possible either through the serial port or over the network To protect against misuse of network side remote maintenance the N command makes it possible to suppress this functional...

Page 68: ...AN Modem generates the following message and then expects the update data in Motorola S Record format If no data are sent within 30s the mode is automatically quit MB90F562 bootloader v1 x W T xx xxxx...

Page 69: ...ion Appendix Extended configuration of the LAN Modem Firmware update of the LAN Modem Reading and sending configuration profiles Resetting the LAN Modem The modem protocol on the TCP level Used ports...

Page 70: ...he network stack is factory optimized for modem operation and does not generally need to be changed In some special applications and system environments it may however be necessary or practical to adj...

Page 71: ...l settings in non volatile memory run 4 Save Setup in the main menu A1 2 Configuration of the TCP server port Local Port Menu 3 SETUP Port 0 3 TCP IP Mode Local Port Default 8000 This setting specifie...

Page 72: ...ith Ethernet address 00 c0 3d 01 02 03 is LanModem 010203 When using DHCP protocol the system name is also used for identification with respect to the DHCP server A1 4 Configuration of the System Pass...

Page 73: ...During an existing connection over the internet the DSL router drops out After the set keep alive time plus 2s for two repetitions has elapsed the LAN Modem closes the connection and is again ready fo...

Page 74: ...ixed transmission speeds and duplex mode 1Changing the link speed is activated only after saving and exiting the telnet or WBM session by means of an automatic Com Server reset Data from any open netw...

Page 75: ...with TCP and IP protocols The two firmware components are in separate files and are sent to the LAN Modem independently of each other as described in the following sections Firmware file extension AT...

Page 76: ...ise the Ethernet address Type no 58xxx description EN 00c03d004a05 OK xxxxxx Description e g TB number for special versions 1In particular if the sticker indicates an TB number as the part number it i...

Page 77: ...ged with the following message MB90F562 bootloader v1 x W T xx xxxx Invoked by software ESC to cancel Waiting Port 0 1The update mode is protected with a timeout of 30s If no data are transmitted with...

Page 78: ...ts the update data in S record format Under Windows the following method using a Telnet client and pasting from the clipboard has proven useful Example with Telnet client under Windows 1 Open the mhx...

Page 79: ...and alteration 4 Use Edit r Paste to copy the firmware from the clipboard to the LAN Modem 5 After a successful update the LAN Modem breaks the TCP connection Any transmission errors are reported wit...

Page 80: ...to close all data control and configuration connections Highlight the desired LAN Modem in the WuTility inventory list The Firmware button starts the Update dialog box in which you must specify the fi...

Page 81: ...nts firewalls routers used between WuTility and the LAN Modem allow transparent communication via these services 1When enabling the listed services in firewalls routers etc various aspects of network...

Page 82: ...desired operating mode using the AT commands In the ext step you use Wn to save these configuration data in one of the two non volatile profiles Then use the command V2 to read the entire conofigurati...

Page 83: ...sent to the LAN Modem 2s after a connection has been successfully opened If the LAN Modem does not receive a correct or even any password within this time it sends the message PASSWD followed by a nul...

Page 84: ...Modems will be used only to connect to each other It is however conceivable that an application program uses TCP IP programming to direct dial an individual LAN Mo dem or to be called by the LAN Modem...

Page 85: ...o no no no The following port numbers are deactivated with the factory defaults They will be used in case of a firmware update Port number 69 UDP Application Update TCP IP stack Configurable no Passwo...

Page 86: ...full access to the corresponding settings and functions To prevent unauthorized access it is therefore recommended that a system password be used Additional measures in this regard such as the composi...

Page 87: ...the TCP IP stack see section on Firmware Update of the LAN Modem Initialization of a firmware update takes place on the system password protected TCP port 8002 Only the TCP IP stack of the LAN Modem i...

Page 88: ...ork Galvanic isolation Dimensions Weight Serial port Baud rates Data formats Flow control 12V 48V 10 9Vrms 30Vrms 10 typ 190mA 12VDC 40 70 C 0 60 C 0 50 C 0 95 not condensing 10 100BaseT RJ45 for STP...

Page 89: ...89 W T Appendix Subject to error and alteration...

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