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i-modul Modem 336 LL 

AT Command Reference 

 

Command 

Description 

AT%C<n> 

Enable data compression 

Enable/disable a data compression type 

The i-modul Modem 336 LL 3.0 can only perform data compressions for error 
corrected connections.  

AT%C0

 

No data compression enabled 

AT%C1

 

MNP-5 data compression enabled 

AT%C2

 

Enable V.42 bis and V.44 data compression 

AT%C3

 

Enable MNP-5 and V.42 bis data compression (default) 

AT*C 

Remote configuration password 

This password secures the remote configuration as well as incoming data connec-
tions (see 

AT*P

) and security callback.  

OLD PASSWORD

 

Requires the previous password (default: 

QWERTY

). Wrong 

input leads to 

ERROR

. 

NEW PASSWORD

 

Enter the new password with 6 to 12 characters. 

CONFIRM

 

Repeat the new password. Wrong input leads to 

ERROR

. 

OK

  

The password is immediately stored in the EEPROM. 

AT&C<n> 

DCD (CT109) behavior 

Behavior of the RS232 DCD output of the i-modul Modem 336 LL 3.0. 

AT&C0

 

DCD is always ON 

AT&C1

 

DCD follows the carrier signal of the phone line (default) 

AT+DS=<n> 

 

Activate/deactivate V.42 bis data compression 

AT+DS=0

 

Turns V.42 bis data compression OFF 

AT+DS=3

 

Turns V.42 bis data compression ON (default) 

AT+DS44=<n> 

 

Activate/deactivate V.44 data compression 

AT+DS44=0 

Deactivates V.44 data compression 

AT+DS44=3

 

Turns V.44 data compression ON (default) 

ATE<n> 

Command entry Echo 

This command toggles the responses, which the i-modul Modem 336 LL 3.0 cre-
ates as reactions from application commands (Echo), ON or OFF. 

ATE0

 

Switch off Echo 

ATE1

 

Switch on Echo (default) 

33 

 

Содержание i-modul 336 LL

Страница 1: ...Designer s Guide i modul Modem 336 LL 3 0...

Страница 2: ......

Страница 3: ...Inc IBM PC AT XT are registered trademarks of International Business Machine Cor poration INSYS e Mobility LSG and e Mobility PLC are registered trademarks of INSYS MICROELECTRONICS GmbH Windows is a...

Страница 4: ...dshake 17 6 3 1 Hardware data flow control RTS CTS 17 6 3 2 Software data flow control XON XOFF 18 6 4 Data Compression 19 6 5 Data Buffer for Serial Data Transmission 20 6 6 Error correction 21 6 7 I...

Страница 5: ...ace Terminal Strip P1 61 10 3 Network Interface Terminal Strip P2 for Modem ISDN 61 10 4 Antenna Connection if equipped 62 10 5 Further Recommendations 62 10 6 Reference Documents 62 11 Declaration of...

Страница 6: ...nput current of GND to internal VCC Typically 0 5 mA Maximum output current for state LOW IOLmax 1 6 mA Maximum output current for state HIGH IOHmax 100 A Input voltage TTL VIL 0 8 V VIH 2 V max VCC O...

Страница 7: ...es Technological Feature Description Supported data compression standards MNP 5 V 42 bis V 44 Modulation standards Bell standard 103 212 V 32 bis V 32 V 23 V 22 V 22 bis V 21 V 34 V 34 Error correctio...

Страница 8: ...ing hole position Item Type Description P1 SAMTEC TW series 2 row 2 mm pitch or Fischer SLY 81 24 Z Serial interface inputs and outputs P2 SAMTEC TW series 2 row 2 mm pitch or Plastron PQFZ 04S VK 024...

Страница 9: ...evel RS232 signal 15 Output RI Ring Signal TTL level RS232 signal 16 Output DSR Data Set Ready TTL level RS232 signal 17 Output UA Switch output TTL level 18 Input UE Alarm input TTL level 19 Output U...

Страница 10: ...odul Modem 336 LL 3 0 exceed a certain level An application can also prompt the i modul Modem 336 LL 3 0 via a con trol line to interrupt the data flow As an alternative the i modul Mo dem 336 LL 3 0...

Страница 11: ...is usually pre initialized for the operation in originate or answer mode Each i modul Modem 336 LL 3 0 can still be switched from one operating mode to the other one via AT commands Configuration for...

Страница 12: ...u or not An arrow will indicate prerequisites which must be fulfilled to be able to process the subsequent steps in a meaningful way You will also learn which software or which equipment you will need...

Страница 13: ...th a typical RS232 interface of a PC overloads components of the module due to the higher voltage levels Use an RS232 level converter e g MAX232 to adjust both interface types correctly Configuring an...

Страница 14: ...mands can be found in the chapter AT Command Reference 6 Save your entries with AT W Not all configurations at the i modul Modem 336 LL 3 0 need to be saved actively by entering AT W Some settings are...

Страница 15: ...g to the character string AT the parameters for the interface of the i modul Modem 336 LL 3 0 will be checked and adjusted if necessary The function is active as default Configuration with AT commands...

Страница 16: ...parameters for this command in the Chapter AT Command reference To display the current settings AT MS For a list of possible parameter of the com mand enter AT MS 6 2 Bit Direct Mode For special appl...

Страница 17: ...nd will thus indicate to the applica tion to interrupt the dataflow When the buffer is emptied sufficiently for the i modul Modem 336 LL 3 0 to be able to receive data again the CTS line is set to HIG...

Страница 18: ...the application This character will cause the application to send data to the modem again Analogously the application can insert XON XOFF characters into the data stream to switch the data flow on an...

Страница 19: ...ta compression mode The default setting is the automatic selection of MNP 5 and V 42 bis and V 44 data com pression AT C3 Configuration with AT commands To select the compression type use AT C n To co...

Страница 20: ...ted the data flow control should be active to avoid a buffer overflow in the i modul Modem 336 LL 3 0 If the buffer overflows the data gets lost If the buffer overflows the data gets lost Operation wi...

Страница 21: ...sums for error tests In V 42 there is the option to have the modem identify if the partner is a V 42 modem a MNP modem or a modem without error correction The modem can then autonomously adjust to th...

Страница 22: ...d functional If the test message is not responded to within this timeframe in a regular manner the i modul Modem 336 LL 3 0 will re attempt to establish the connection For the test message a certain A...

Страница 23: ...Modem 336 LL 3 0 for four wire operation use the command AT L1 Save the settings using AT W 6 9 Adjusting the Transmission Level The transmission level of the i modul Modem 336 LL 3 0 at the leased l...

Страница 24: ...eplace the affected device After configuring the available device for operation in the mode of the failed device you can replace the devices For changing only the 2 or 4 wire operation it s sufficient...

Страница 25: ...H Open Table 6 Description of the input query output state of the input 6 12 Control output The i modul Modem 336 LL 3 0 provides two control outputs OUT1 and OUT2 IO tunnel ing allows that the output...

Страница 26: ...hed between the modems If the i modul Modem 336 LL 3 0 recognizes the character string in the data stream and if no data traffic takes place after that for 1 second the i modul Modem 336 LL 3 0 will s...

Страница 27: ...modul Modem 336 LL 3 0 is connected 3 Enter four asterisks This will change the modem into remote maintenance mode If you have configured a password you will now need to enter it After you have succes...

Страница 28: ...ing an AT command Configuration with AT commands To reset the i modul Modem 336 LL 3 0 use the command ATZ To reset the i modul Modem 336 LL 3 0 and load the settings stored in user profile 0 use the...

Страница 29: ...rter e g MAX232 to adjust both inter face types correctly The firmware of the i modul Modem 336 LL 3 0 can be updated to add further functions to the i modul Modem 336 LL 3 0 or to improve the existin...

Страница 30: ...Opening a DVD drive playing music or connecting a USB device can also disturb or interrupt the data flow As a result the i modul Modem 336 LL 3 0 may fail to function and only INSYS MICROELECTRONICS...

Страница 31: ...upload progress is again displayed by dots in the terminal window The i modul Modem 336 LL 3 0 indicates after successful upload Device successfully programmed The i modul Modem 336 LL 3 0 will reset...

Страница 32: ...l according to the active error correction protocol without considering a pa rameter specification If no connection is established or if a fax connection is active an error message is displayed AT B1...

Страница 33: ...ASSWORD Enter the new password with 6 to 12 characters CONFIRM Repeat the new password Wrong input leads to ERROR OK The password is immediately stored in the EEPROM AT C n DCD CT109 behavior Behavior...

Страница 34: ...protocol speed MNP 10 AT H n determines the speed that is used to exchange the declarations during the MNP 10 connection setup before the modems enter the MNP 10 mode AT H0 Connection setup takes pla...

Страница 35: ...No data flow control AT K3 Select data flow control RTS CTS default AT K4 Select data flow control XON XOFF AT K5 Select transparent data flow control XON XOFF AT K6 Select RTS CTS and XON XOFF data...

Страница 36: ...break from the application during the data connection to another modem AT K0 The i modul Modem 336 LL 3 0 enters the command mode and sends no break to the other modem AT K1 The i modul Modem 336 LL 3...

Страница 37: ...received from another modem during a con nection that has not been error corrected the parameter causes the following AT K0 The i modul Modem 336 LL 3 0 deletes the data buffer and sends a break to th...

Страница 38: ...ce is only set to 9600 baud Without error correction the high speed will obviously lead to higher bit error rates which is usually disruptive The automatic speed limitation AT L0 will limit the speed...

Страница 39: ...a connection check AT MS Modula tion Auto mode Send Minbaud Send Maxbaud Receive Min baud Receive Maxbaud Select modulation type AT MS determines the modulation type The command enables or disables a...

Страница 40: ...er Send Maxbaud The optional parameter maxbaud determines the highest possible baud rate which the i modul Modem 336 LL 3 0 uses for sending AT N n Select error correction This command determines whic...

Страница 41: ...are constantly updated during a connection If the value increases significantly during a connection the quality will deteriorate After a previous AT E command an Autoretrain is performed AT R n RTS C...

Страница 42: ...e i modul Modem 336 LL 3 0 treats its DSR CT107 output AT S0 DSR always ON default AT S1 DSR ON after a response tone has been detected DSR OFF when no carrier is detected any more AT S n Selects the...

Страница 43: ...detection is used AT U0 8 data bits no parity 1 stop bit AT U1 7 data bits odd parity 1 stop bit AT U2 7 data bits even parity 1 stop bit AT U3 7 data bits no parity 1 stop bit AT U6 7 data bits no p...

Страница 44: ...isplays the used data compression method The example shows the used compression method V 42 bis the com pression method can be set with the command AT C LINE QUALITY Displays the quality of the data c...

Страница 45: ...nd determines which data transmission rate information is provided for a CONNECT message ATW0 The i modul Modem 336 LL 3 0 reports the baud rate between i modul Modem 336 LL 3 0 and application defaul...

Страница 46: ...ve i e a dialing attempt without the presence of a dialing tone results in the message NO DIALTONE No detection of the busy signal i e when calling a busy line the message NO CARRIER is displayed ATX3...

Страница 47: ...lt 1 is loaded Pause Pause Change from data mode to command mode online command mode 1 second pause before and after the entry no Return CR After the response OK an additional waiting period of 1 seco...

Страница 48: ...2400 1 X X X X 11 CONNECT 4800 1 X X X X 12 CONNECT 9600 1 X X X X 13 CONNECT 7200 1 X X X X 14 CONNECT 12000 1 X X X X 15 CONNECT 14400 1 X X X X 16 CONNECT 19200 1 X X X X 17 CONNECT 38400 1 X X X X...

Страница 49: ...X X X 69 COMPRESSION NONE X X X X X 70 PROTOCOL NONE X X X X X 77 PROTOCOL LAP M X X X X X 78 CARRIER 31200 X X X X X 79 CARRIER 33600 X X X X X 80 PROTOCOL ALT X X X X X 81 PROTOCOL ALT CELLULAR X X...

Страница 50: ...X X 184 CARRIER 34667 X X X X X 185 CARRIER 37333 X X X X X 186 CARRIER 38667 X X X X X 187 CARRIER 41333 X X X X X 188 CARRIER 42667 X X X X X 189 CARRIER 45333 X X X X X 190 CARRIER 46667 X X X X X...

Страница 51: ...I 0 255 43 S3 Return ASCII 0 127 13 S4 Linefeed character ASCII 0 127 10 S5 Backspace character ASCII 0 255 8 S6 Waiting period dial tone s 3 7 3 S7 Waiting period carrier signal s 0 100 50 S8 Dial to...

Страница 52: ...w S Registers Units value range presets 9 2 Description S Registers Note Registers marked with are stored in the user defaults with the command AT W S0 Number of ringing tones until automatically goin...

Страница 53: ...0 seconds Default values are 50 Originate and 30 Answer S8 Dial tone delay Dial pause time if a comma is included in the dialing string If there is a comma in the dialing string the modem will wait du...

Страница 54: ...o on Bit 2 Reserved Bit 3 Result format Result codes 0 Message numbers ATV0 1 Message texts ATV1 Bit 4 Reserved Bit 5 Tone pulse dialing Tone pulse 0 Tone dialing ATT 1 Pulse dialing ATP Bit 6 Reserve...

Страница 55: ...t Meaning Bit 0 1 Reserved Bit 2 CTS behavior CT106 CTS behavior 0 see AT R0 1 see AT R1 Bit 3 4 DTR behavior CT108 DTR behavior 0 see AT D0 1 see AT D1 2 see AT D2 3 see AT D3 Bit 5 DCD behavior CT10...

Страница 56: ...ithout a DTR signal before it hangs up 1 100 seconds S26 Time period between RTS CTS Time period between RTS and CTS activation in 1 100 seconds S27 General settings Bit Meaning Bit 0 3 RS232 Mode Asy...

Страница 57: ...mode connection 4 Modem attempts to establish a MNP connec tion In case of failure it hangs up 5 Modem attempts to establish a MNP connec tion In case of failure a direct mode connection is establishe...

Страница 58: ...ing Break handling 0 see AT K0 1 see AT K1 2 see AT K2 3 see AT K3 4 see AT K4 5 see AT K5 Bit 6 7 MNP block size MNP block size 0 64 characters AT A0 1 128 characters ATM1 2 192 characters AT A2 3 25...

Страница 59: ...ports synchronous modems S86 8 No joint framing detected S86 9 No protocol could be established S86 10 Invalid answer when negotiating extensions S86 11 No synchronous marks received from remote termi...

Страница 60: ...reasing the transmit level S91 6 Transmit level 6 dBm S91 15 Transmit level 15 dBm S95 Result Code Control Result code Bit Meaning Bit 0 CONNECT message with line speed Bit 1 CONNECT ARQ message for e...

Страница 61: ...Application Interface Terminal Strip P1 The TTL RS232 interface should be equipped with ferrite beads directly at the module to reduce interference signals from the motherboard It is also beneficial...

Страница 62: ...ground connections of the motherboard To save costs some of the above mentioned capacitors or ferrite beads may be omitted However they should be considered in the layout to be able to integrate it wi...

Страница 63: ...ut in the Council Directive on the Approximation of the Laws of the Member States relating to Electromagnetic Compatibility 2004 108 EC and the Council Directive relating to Low Voltage 2006 95 EC as...

Страница 64: ...s 8 Table 4 Terminal strip connections description terminal strip P1 9 Table 5 Terminal strip connections description terminal strip P2 9 Table 6 Description of the input query output state of the inp...

Страница 65: ...Firmware 29 Formatting 12 Hardware data flow control 29 Hardware handshake 29 Input 9 IO tunneling 25 Leased line 9 25 Level converter 13 MAX232 13 Minicom 13 Off Hook 9 Operating mode 38 Operation 1...

Страница 66: ......

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