background image

 

 

52

Terminal Emulation – tn5250 

The “tn52550” terminal emulation is typically used for IBM AS/400 server applications. 
The AML tn5250 TE is designed to be a basic 5250 emulation. If optional features are 
required, it is recommended that either the Connect PowerNet TwinClient emulations or 
the Stay Linked emulation be used. 

 
 
 
 
 
 
 
 
 
 
 
 

If a different terminal type is  selected, then the optional features for that emulation are 
displayed. These features allow you to customize how the M71V2 handheld terminal will 
display the information from your RF server. 
 
The Font function allows you to select a custom font size which will change the amount 
of information displayed on the screen. The Huge font set is not available with the tn5250 
terminal emulation. 

 

Содержание AML M71V2

Страница 1: ...M71V2 Wireless Handheld Terminal 2008 American Microsystems LTD Effective Date February 2008 User s Guide AML Website www amltd com...

Страница 2: ...en tested and found to comply with the limits for a Class A digital device pursuant to Part 15 of the FCC Rules These limits are designed to provide reasonable protection against harmful interference...

Страница 3: ...econnect 29 Contrast 30 Network Setup 31 Radio Settings WEP 32 Radio Settings WPA PSK 36 Radio Settings WPA EAP 37 Simultaneous Hosts Connection 39 Multiple Hosts 40 Hosts Log in Options 41 Terminal O...

Страница 4: ...g the Code 49 Bar Code 98 Setting the Aztec Bar Code 99 Setting the QR Code Bar Code 99 Setting the Data Matrix Bar Code 100 Setting the MaxiCode Bar Code 100 Setting the Postal Bar Codes 101 Setting...

Страница 5: ...ut performed DOS based and Windows based operating systems when compared on similar hardware platforms The M71V2 is easy to use and program Our specifically designed CommandLink RF Radio Frequency sof...

Страница 6: ...teps are taken to procure an RMA Return Materials Authorization number and shipping instructions from American Microsystems Ltd General Conventions Before you begin to use the M71V2 terminal it s impo...

Страница 7: ...o power off the unit This prevents accidentally powering off the unit if this key is momentarily pressed Note The Power Key Wake up feature is only available on units with Decoder version 2 0 or later...

Страница 8: ...n engine is active Blue Keys Func Selects special functions determined by the host system Hitting Func then a number selects a special function Functions 1 9 are selected by hitting the Func then 1 th...

Страница 9: ...Ins Inserts data at the cursor position and moves all existing data to the right Deletes characters at the cursor position or if cursor follows a string of characters it deletes the characters to the...

Страница 10: ...ngines installed Standard Range Laser The Standard laser engine uses a moving laser and a standard laser detector The standard laser is suitable for most applications The laser is easy to aim and read...

Страница 11: ...ght reflectance measured at 650 nm Area Imager 2D The Area Imager uses a camera type sensor to acquire images of the target Unlike a linear scanner the imager is able to scan barcodes in any orientati...

Страница 12: ...8 Reading distance for the Standard High Speed Laser...

Страница 13: ...9 Reading distance for the Long Range Laser Reading distance for the Advanced Long Range Laser...

Страница 14: ...en the unit has scanned a bar code successfully When the scan button is pushed the LED above the on off button will turn a solid red Once the scanner has successfully read the bar code this LED will t...

Страница 15: ...diode Laser Output Power 1 0 milliwatt maximum output FCC Information This device complies with Part 15 of the FCC Rules Operation is subject to the following two conditions 1 this device may not caus...

Страница 16: ...12...

Страница 17: ...backs from 5 5 Mbps to 2 Mbps and 1 Mbps are also supported Interference and Coexistence 802 11b operates in a range of radio frequencies known as an unlicensed band i e the FCC does NOT require the u...

Страница 18: ...curity measures are enabled Ad Hoc Mode Most installed wireless LANs today utilize infrastructure mode that requires the use of one or more access points With this configuration the access point provi...

Страница 19: ...15 A Typical Wireless Network Ethernet Connectio n Wireless Access Point s 802 11b Wireless Handheld Terminals M71V2 Personal Computer Server...

Страница 20: ...uires a customer supplied SIM Subscriber Identity Module card issued by the cellular network Access Provider e g T Mobile Cingular or Verizon This card must be installed prior to using the M71V2 GSM G...

Страница 21: ...and see the settings main screen The settings are selected by highlighting the proper item and hitting the ENTER key The information below is an example of how the unit might be set your settings may...

Страница 22: ...rior to initiating a call Hangup String Disconnection String The character string sent to the internal GPRS modem card when it disconnects from a call Dial String Dialing string The character string s...

Страница 23: ...Cellular Network or you have the GSM GPRS modem settings wrong To determine the amount of data being sent by the GSM GPRS card use the M71V2 Menu System and select Diagnostics RF Link Status and see...

Страница 24: ...ver and store in a safe place Remove the M71V2 battery and set it aside Remove only the 2 screws in the bottom of the battery compartment The M71V2 Handle comes with the necessary 4 screws to secure i...

Страница 25: ...ed scanner 2 RxD in to terminal 3 TxD out from terminal 4 RTS out from terminal 5 GND 6 Battery Charge in to terminal 7 CTS in to terminal 8 UDC USB data 9 UDC USB data 10 Battery Out from terminal WA...

Страница 26: ...V2 cradle can accommodate the M71V2 with or without the optional M71V2 handle The M71V2 Cradle has three indicator lights POWER Indicates that the M71V2 Cradle is plugged in MAIN Indicates the M71V2 m...

Страница 27: ...2 Cradle has no internal or external settings that can be changed The slower RS 232 communication port is primarily used for uploading and downloading of data files to the M71V2 Batch handheld termina...

Страница 28: ...lows a Windows based PC to become an RF server An RF server is a master control PC that tells the M71V2 handheld terminal what to display and what to do with collected data If your network already has...

Страница 29: ...m of the screen After the M71V2 handheld terminal connects associates with an access point it attempts to connect to an active CommandLink Server Note If there is not an RF Server active for the M71V2...

Страница 30: ...o a CommandLink RF server If you would like to connect to your own telnet server the procedure is exactly the same To run your telnet session you would simply enter the IP address of your telnet serve...

Страница 31: ...ion which is described later The amlterm terminal emulation software is specifically designed to work with the CommandLink software The CommandLink software controls the functionality of the terminal...

Страница 32: ...ded off the AML website To upgrade the M71V2 firmware the handheld must be on and connected to the same network as your PC Open your internet web browser for example Internet Explorer and type the IP...

Страница 33: ...d screen Only the items in the menu screens are active when the menu items are displayed The menus can be navigated by using the up and down cursor keys A selection is made by pressing one of the two...

Страница 34: ...tion from the Main Menu The 3 left and 4 right arrow keys can be used to fine tune the contrast The scroll bar below the Main Menu window shows the current contrast level The ENTER key will save the c...

Страница 35: ...Dynamic Host Configuration Protocol DHCP server attached to the network then the DHCP function can be used To select the DHCP function simply use the arrow keys to highlight the DHCP button If your ne...

Страница 36: ...f packets sent over a WLAN that acts as a password when a mobile device tries to connect to the network The SSID differentiates one WLAN from another so all access points and all devices attempting to...

Страница 37: ...It is HIGHLY recommended that some sort of WEP standards be enabled in any wireless network This information is unique for each network and should be assigned by the local Systems Administrator The M...

Страница 38: ...r their keys 1 to 4 these keys match the 0 to 3 keys on the M71V2 The key that is set MUST match in exactly the same sequence of the key that is currently set in the Access Points The key on the acces...

Страница 39: ...set to the same mode for communications to take place The Power Save setting will force the radio card to turn off when not in use to save power If you experience connection problems turn the Power Sa...

Страница 40: ...mode used must match the network the M71V2 is to communicate with The Shared Phrase must match the network the M71V2 is to communicate with The Power Save setting will force the radio card to turn of...

Страница 41: ...V2 Handheld Terminal to a network of access points The Ad Hoc Mode is used for connecting the M71V2 to a single access point or a single radio card in a peer to peer network such as a single laptop co...

Страница 42: ...pem Then request to generate a client certificate in PKCS12 format and save this file as client p12 Remember what the phrase is for the certificate as that will need to be entered on the M71V2 s confi...

Страница 43: ...ablish a connection with that server However if more than one host server has been defined the user will be prompted to choose a host server name from a list of servers Simultaneous Hosts Connection T...

Страница 44: ...minal will try to connect to The default setting is Port 23 but some network systems require this to be changed The More Host 1 Options function allows the user to input special log in data For more d...

Страница 45: ...server for what command to execute In this example the M71V2 would respond with the Command Reply string Cmd Rply which is inventory n You can enter straight HEX data by preceding it with the customar...

Страница 46: ...andLink application vt100 and vt220 terminal emulations typically used with UNIX based servers and tn5250 terminal emulation typically used with IBM AS 400 systems Other terminal emulation types and f...

Страница 47: ...ustomize how the M71V2 handheld terminal will display the information from your RF server Note that you can scroll down to access all the features available when using a specific terminal type Also wh...

Страница 48: ...older terminals were designed with this screen size only When using Terminal Emulation you can not mix different size fonts on the same terminal screen If the Disable Scrolling check box is checked t...

Страница 49: ...en can only show 20 columns and 20 rows With scrolling disabled and Screen Loc x and Screen Loc y both set to 0 the M71V2 screen will always display the 20 top rows and the 20 top columns If the Virtu...

Страница 50: ...o pan around the currently displayed screen Use the left 3and 4right arrow keys to change this setting The Row Shift function determines how many rows the display will move each time the Shift arrow k...

Страница 51: ...t strings onto multiple lines on the M71V2 screen This can be very confusing when the data was originally formatted for a 24x80 text screen This option is unchecked by default The Swap Bksp Del functi...

Страница 52: ...ENQ Answerback String whenever the host sends the unit an ENQ command This string can be anything like the terminal name or terminal number The Linefeed Mode function when selected will add a Carriage...

Страница 53: ...character string to send back to the host when the F5 key is pressed Some host systems want this to be esc0t and some systems expect the esc 15 or esc 16 string Use the right and left arrow keys to ma...

Страница 54: ...sent to the host computer when a function key is pressed The Func Key Remapping box must be checked to modify the function keys If the Func Key Remapping box is unchecked the M71V2 will simply send th...

Страница 55: ...preceding it with the customary 0x as in 0xFF for the HEX value of FF You can send multiple HEX values by adding additional HEX sets as in 0x120xBF0xFF for the HEX value of 12 BF FF Octal values use...

Страница 56: ...t emulations or the Stay Linked emulation be used If a different terminal type is selected then the optional features for that emulation are displayed These features allow you to customize how the M71...

Страница 57: ...als were designed with this screen size only When using Terminal Emulation you can not mix different size fonts on the same terminal screen The Auto Reset on Err function resets the connection if an e...

Страница 58: ...the left 3and 4right arrow keys to change this setting The Row Shift function determines how many rows the display will move each time the Shift arrow keys are used This allows the operator to pan ar...

Страница 59: ...then transferred to the host when the terminal logs onto the system If you do not save your settings they will be lost when you exit the Network Settings screen The terminal options will only be made...

Страница 60: ...handheld terminal conserves power consumption Warning You can disable any of the Power Management timers by setting a value of zero 0 However this will increase battery usage and decrease battery life...

Страница 61: ...Timer determines how many minutes the M71V2 s backlight will stay on after power on or when the backlight key is pressed The PowerOff After Sleep timer is how many minutes the M71V2 will wait after t...

Страница 62: ...uality bar graph shows the RF signal strength of the closest Access Point If this bar graph is at 0 then there is no active Access Point in the area or your network settings are wrong Obviously the M7...

Страница 63: ...C RF card Connected AP Normally this means everything is OK and the user should be able to communicate It is possible that the WEP settings are wrong but the authorization is set to OpenSystem Out of...

Страница 64: ...you want to have RF coverage and you can quickly see areas with poor RF coverage Note that this is a very bad connection This unit is connected to the Access Point with a MAC address of 00 02 2D 3E AD...

Страница 65: ...more RAM is needed for other applications Linux will dynamically re allocate the memory to make more RAM available for the application The CPU usage is usually low because there are no processes util...

Страница 66: ...the M71V2 handheld terminal is able to communicate with the CommandLink RF communicator server PC The Avg transfer time in milliseconds and PLoss percentages is very important High ping transfer rates...

Страница 67: ...ttom of the M71V2 handheld terminal There are two types of printers supported in the Print Test Label sub menu function The M71V2 does support almost any type of serial printer If the M71V2 handheld t...

Страница 68: ...eld terminals firmware version and the date and time it was created Serial Number The Serial Number function displays the information about the M71V2 handheld terminals serial number if your unit supp...

Страница 69: ...ttery or place the unit in the charger for charging Barcode Data Viewer The Barcode Data Viewer function displays the actual data acquired by the bar code scanner including non printable characters Th...

Страница 70: ...B server connected to the USB port Hardware Tests The Hardware Tests function performs tests on the various M71V2 hardware Note These hardware tests are for our own internal testing and may or may not...

Страница 71: ...s function sets much of the M71V2 handheld terminal s internal hardware and software Barcode Options The Barcode Options function allows you to make changes to the way specific bar codes are scanned b...

Страница 72: ...nner to read upper and lower case characters as well as extended special characters OFF Disable the Full ASCII Extension to Code 39 This sets the reader to the standard Code 39 mode MOD 43 CHECK DIGIT...

Страница 73: ...ly contains a single or multiple dashes minus sign will clear the buffer OFF Disable Concatenate Mode Setting the UPC Bar Code UPC DECODER ON Enable reading UPC A and UPC E bar codes OFF Disable readi...

Страница 74: ...character OFF Do not transmit the UPC A Check Digit character SEND UPC E CHECK DIGIT ON Transmit the UPC E Check Digit character OFF Do not transmit the UPC E Check Digit character Setting the EAN Bar...

Страница 75: ...EAN 13 Check Digit character OFF Do not transmit the EAN 13 Check Digit character SEND EAN 8 CHECK DIGIT ON Transmit the EAN 8 Check Digit character OFF Do not transmit the EAN 8 Check Digit characte...

Страница 76: ...UPPLEMENTS ON Enable reading UPC supplements Option 0 above must be set on OFF Disable reading UPC supplements REQUIRE EAN SUPPLEMENTS ON Enable reading EAN supplements Option 0 above must be set on O...

Страница 77: ...no check digit required OPCC CHECK DIGIT Specifies if the OPCC check digit type will be used with Interleaved 2 of 5 ON Optical Product Code Council 2 1 2 mod 10 OFF None no check digit required SEND...

Страница 78: ...SET FIXED LENGTH 2 02 60 Sets a second valid Fixed Length for Interleaved 2 of 5 Enter a two digit value to enter the length The default length is set to 6 characters SET FIXED LENGTH 3 02 60 Sets a...

Страница 79: ...OFF Disable the CLSI check digit Check digit verification will not be performed Setting the Code 128 Bar Code CODE 128 DECODER ON Enable reading Code 128 bar codes OFF Disable reading Code 128 bar co...

Страница 80: ...ends them to the computer just like they were a single bar code When a Code 93 label with a leading space is read the reader emits two short beeps and buffers the data without transmission This proces...

Страница 81: ...for each label The check digit must be mod 10 FIRST CHECK DIGIT MOD 11 ON The First Check Digit must be mod 11 OFF The First Check Digit must be mod 10 SEND FIRST CHECK DIGIT ON Transmit the First Ch...

Страница 82: ...the First Check Digit OFF Do not transmit the First Check Digit SEND SECOND CHECK DIGIT ON Transmit the Second Check Digit OFF Do not transmit the Second Check Digit Setting the RSS Bar Code The RSS s...

Страница 83: ...SS Expanded Active ON Enable reading the described bar codes OFF Disable reading of the described bar codes EAN Type Identifier ON Transmit the RSS EAN Type Identifier string OFF Do not transmit the R...

Страница 84: ...preceding the data indicating the symbology type of the bar code The letter corresponds to the types A Code 39 B UPC A C UPC E D EAN 13 E EAN 8 F Interleaved 2 of 5 G Codabar H Code 128 I Code 93 J MS...

Страница 85: ...ode The optional Termination Character is transmitted at the end of the data None None Tab Horizontal Tab CR Carriage Return CRLF Carriage Return Line Feed FE VT Field Exit usually used on AS 400 syst...

Страница 86: ...Local Settings function sets much of the M71V2 handheld terminal s internal hardware and software Barcode Options The Barcode Options function allows you to make changes to the way specific bar codes...

Страница 87: ...owing symbology settings Setting the Code 39 Bar Code The individual bar codes can be enabled and disabled by hitting the Space key Only enabled bar code symbologies can be modified To modify a bar co...

Страница 88: ...Default 48 The maximum number of characters in the scanned bar code Append Checked Allows multiple bar codes to be scanned before the bar code data is sent to the system Every bar code that starts wi...

Страница 89: ...m number of characters in the bar code Setting the MicroPDF417 Bar Code MicroPDF417 Checked Enable reading MicroPDF417 bar codes Unchecked Disable reading MicroPDF417 bar codes Length Min Default 1 Th...

Страница 90: ...number of characters in the scanned bar code Setting the Composite Bar Code UCC Composite Checked Enable reading UCC Composite bar codes Unchecked Disable reading UCC Composite bar codes Length Min D...

Страница 91: ...nd the 2 digit supplemental character with the bar code Unchecked Disable sending the 2 digit supplemental character with the bar code 5 Dig Sup Checked Send the 5 digit supplemental character with th...

Страница 92: ...ed Do not require the 2 or 5 digit supplemental character with the bar code Sup Space Checked Require the supplemental space character with the bar code Unchecked Do not require the supplemental space...

Страница 93: ...sending the EAN JAN 13 check digit with the bar code 2 Dig Sup Checked Send the 2 digit supplemental character with the bar code Unchecked Disable sending the 2 digit supplemental character with the...

Страница 94: ...code 2 Dig Sup Checked Send the 2 digit supplemental character with the bar code Unchecked Disable the sending of the 2 digit supplemental character with the bar code 5 Dig Sup Checked Send the 5 digi...

Страница 95: ...Do not validate the check digits and do not send any check digits with the bar code TEST Validate the check digits but do not send it with the bar code Bar code must be printed with a digits characte...

Страница 96: ...de Codabar Checked Enable reading Codabar bar codes Unchecked Disable reading Codabar bar codes Start Stop Checked Send any leading or trailing start characters with the bar code Unchecked Disable the...

Страница 97: ...racters in the scanned bar code Length Max Default 80 The maximum number of characters in the scanned bar code Page Defines the mapping of foreign characters to be inserted into the character codes IS...

Страница 98: ...aracters in the scanned bar code Length Max Default 80 The maximum number of characters in the scanned bar code Page Defines the mapping of foreign characters to be inserted into the character codes I...

Страница 99: ...maximum number of characters Plessey Checked Enable reading Plessey bar codes Unchecked Disable reading Plessey bar codes Length Min Default 4 The minimum number of characters in the scanned bar code...

Страница 100: ...Disable reading Telepen bar codes AIM Output Checked Read start stop pattern 1 and output standard full ASCII Unchecked Read start stop pattern 1 and output compressed numeric Length Min Default 1 The...

Страница 101: ...n Default 4 The minimum number of characters in the scanned bar code Length Max Default 48 The maximum number of characters in the scanned bar code Setting the Codablock F Bar Code Codablock F Checked...

Страница 102: ...in the scanned bar code Length Max Default 160 The maximum number of characters in the scanned bar code Setting the Code 49 Bar Code Code 49 Checked Enable reading Code 49 bar codes Unchecked Disable...

Страница 103: ...scanned bar code Length Max Default 3750 The maximum number of characters in the bar code Aztec Rune Checked Enable Aztec Runes scanning Unchecked Disable Aztec Runes scanning Setting the QR Code Bar...

Страница 104: ...ng Data Matrix bar codes Length Min Default 1 The minimum number of characters in the scanned bar code Length Max Default 1500 The maximum number of characters in the bar code Setting the MaxiCode Bar...

Страница 105: ...ar code Unchecked Disable the sending of the Postnet check digit with the bar code Planet Code Checked Enable reading Postnet bar codes Unchecked Disable reading Postnet bar codes Check Digit Checked...

Страница 106: ...CP Min Default 4 The minimum number of characters in the scanned bar code CP Max Default 80 The maximum number of characters in the scanned bar code Korea Post Checked Enable reading Korea Postal bar...

Страница 107: ...to add termination characters to the bar code as it s read by the internal scanner SEND BAR CODE TYPE ID ON OFF ON Sends a letter preceding the data indicating the symbology type of the bar code The...

Страница 108: ...same bar code multiple times OFF Disable reading the same bar code twice in a row TERMINATION CHARACTER OVERRIDE ON OFF ON Strips any termination character from the bar code that was scanned OFF Does...

Страница 109: ...an characteristics Standard Laser or CCD LR or ALR installed These options are used to configure the laser or CCD device behavior and the trigger mode for the M71V2 handheld terminal Trigger Mode Trig...

Страница 110: ...ode is poorly printed or damaged Imager Options 2D Imager Only These options are used to configure the 2D Imager device behavior and the trigger mode for the M71V2 handheld terminal Trigger Mode Trigg...

Страница 111: ...ED illumination light Centering Checked Allows the unit to look for the bar code to be scanned in the middle of the Red LED illumination beam only Unchecked Disable the Red LED illumination light Imag...

Страница 112: ...nd of the bar code data NOTE If the total number of strip characters both Leading and Trailing is greater than the number of characters of the bar code no characters will be stripped Strip Lead Trail...

Страница 113: ...ou can restore the default settings for all bar code options The 2D Imager settings are quite extensive and complex Usually the default settings are satisfactory for most applications If the bar code...

Страница 114: ...ese setting are saved even if the unit is powered off You can hit the ENTER key to pop up a calendar to make setting the date easier You must Save the settings for them to take effect Port Configurati...

Страница 115: ...ted you must set up the port parameters Baud 115200 57600 38400 19200 9600 4800 2400 1200 300 Parity None Even Odd Mark Data Type None 8 1 Even 8 1 Odd 8 1 None 7 1 Even7 1 Odd 7 1 None 7 2 Even 7 2 O...

Страница 116: ...e auto start program This gives the network time to setup routers and RF data paths to the M71V2 Enable Servers This allows you to disable network connectivity to the M71V2 This is usually used to kee...

Страница 117: ...bling password protection on the normal Main Menu however if the administrative password is lost depending on the settings configuration it may not be possible to retrieve or reset the password in the...

Страница 118: ...114 Linux Prompt The Linux Prompt function puts the M71V2 handheld terminal into its native Linux Operating System Most of the Linux commands are available on the M71V2...

Страница 119: ...te reset is required You can quickly setup multiple units to have exactly the same settings by copying FTP ing the settings xxxxxx files to other units Remember that the RF settings are included in th...

Страница 120: ...2 handheld terminal comes equipped with a powerful calculator utility which can be activated from the Tools Utilities menu The calculator can do simple mathematical functions by simply typing the data...

Страница 121: ...Keys is selected in Power Management If the red Power key is pressed briefly the unit will wake up from sleep mode If the red Power key is held for more than 2 seconds the unit will completely power d...

Страница 122: ...2 internal memory capacity While the M71V2 Standard Memory version is designed primarily for terminal emulation applications the M71V2 Expanded Memory version is capable of running countless existing...

Страница 123: ...s The M71V2 has two types of electronic memory devices Flash and RAM The RAM memory works much like a standard PC The Linux operating system and any programs currently being executed are utilizing the...

Страница 124: ...d a new startup splash screen The host computer must have a logical network connection to the M71V2 This can be tested by either pinging the M71V2 or pinging the host from the M71V2 See the M71V2 User...

Страница 125: ...access then the M71V2 will display a blank screen Once a web page is displayed the operator can pan around the screen by using the Shift key then an arrow key The thin bars on the right side and botto...

Страница 126: ...ogram in the graphics mode and to go to the AML website Under Start Dir we have added the startup directory bin Under Start Prog we have added the startup program links case sensitive Under Start Para...

Страница 127: ...following benefits in addition to 5250 3270 and VT100 220 terminal emulation Centralized wireless session device configuration monitoring and control Secure end to end wireless data transmission betwe...

Страница 128: ...data collection applications designed to interface interactively with your current ERP system Results are achieved by means of a Windows point and click interface using true client server open system...

Страница 129: ...ock 110 IP Address 32 J Journaling File System 61 114 K Key ID 35 Key Values 4 Keyboard 3 L Laser CCD Setting 105 linear imager 6 Links Web Browser 119 Linux Prompt 113 Local Settings 67 Local Setting...

Страница 130: ...ram 112 Start Prog 112 Symbology Settings 67 82 T Telnet 27 Terminal Options 43 44 52 Terminal Overview 3 Test label 63 Tools and Utilities 115 TX Rate 59 U UPC EAN Barcode Supplements Settings 71 91...

Отзывы: