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User’s Guide and Reference

5- 3

Modem Test Procedures

Local Analog Loopback

This test checks the path between the local Modem and the PC. The test
is only functional when the Modem is in direct mode (&Q0) and the COM
port baud rate is set to 14400 bps (Trumpcard 14400) / 28800 bps
(Trumpcard 28800) or less.

To start this test, the Modem must be in command mode.

To run this test:

1. Enter

AT&T1 [ENTER]

. Wait until the Modem returns a

CONNECT

message.

2. Enter a test message. For example,

“This message should be

echoed back.”

The message should immediately appear on the screen as you enter

it.

3. Enter

+++

(the escape sequence).

The Modem will respond with

. The Modem is now in command

mode.

4. Enter

AT&T0 [ENTER]

to end the test.

Содержание 28800

Страница 1: ...Trumpcard Data Fax Modem User s Guide and Reference...

Страница 2: ...sion 3 0 How To Contact Us At Ositech Communications we make every effort to provide our customers with products that fit their needs and work well If you wish to communicate with technical support sa...

Страница 3: ...Data Fax Modem PC Card The Trumpcard Modem is a PCMCIA Type II Modem with no external controls or indicators To operate the Modem you require a communications software package PCMCIA Card and PC Card...

Страница 4: ...he equipment and the receiver Connect the equipment into an outlet on a circuit different from that to which the receiver is connected Consult the dealer or an experienced radio or television technici...

Страница 5: ...ical you will be notified as soon as possible You will also be informed of your right to file a complaint with the FCC Your telephone company may make changes in its facilities equipment operations or...

Страница 6: ...s and internal metallic water pipe system if present are connected together This precaution may be particularly important in rural areas Caution Users should not attempt to make such connections thems...

Страница 7: ...contains SPECTRUM CONNECTED cellular data communication technology which can be activated for data communication over a cellular network when a license is obtained from SPECTRUM and the product is com...

Страница 8: ...on 2 3 Connection to the Telephone Network through the Line Interface Module 2 4 Section Three Basic Operation 3 1 Before You Begin 3 2 Enabling The Trumpcard 3 2 Operating the Trumpcard 3 3 Using AT...

Страница 9: ...ster Summary 4 35 Register Descriptions 4 37 Facsimile Commands 4 45 Class 1 Commands 4 45 Class 2 Commands 4 45 Section Five Modem Test Procedures 5 1 Local Modem Self Test 5 2 Local Analog Loopback...

Страница 10: ...x...

Страница 11: ...most standard communications and facsimile packages Refer to the communications package documentation for instructions to set up and configure your communications software to take advantage of the Tr...

Страница 12: ...e command set ITU T V 42 LAPM error correction protocol MNP 2 3 and 4 error correction protocol MNP 10 Error correction protocol for cellular communications ITU T V 42bis data compression MNP Class 5...

Страница 13: ...set compatible with EIA TIA 578 Facsimile Class 2 command set compatible with proposed EIA TIA 592 Cellular Mode The Trumpcard Modem has an optional cellular kit that allows the Modem to connect to a...

Страница 14: ...rate with today s portable and laptop technology and computer user s needs Power conservation modes including sleep mode Automatic wake up on incoming call 16550 Compatible COM Port Field upgradeable...

Страница 15: ...ard used in North America V 22bis V 22bis refers to the standards set by ITU T for 2400 bps Modem communications V 23 V 23 refers to the standards set by ITU T for 1200 bps Modem communications with a...

Страница 16: ...n protocol MNP 10 MNP 10 refers to a error correction protocol often used in harsh environments cellular use MNP 5 MNP 5 refers to an alternate standard for data compression V 17 V 17 refers to the st...

Страница 17: ...n your computer Preparing for Installation To install the Trumpcard Modem you require the accompanying diskettes and the following items A computer equipped with a PCMCIA Release 2 x Type II PC Card s...

Страница 18: ...of the computer Insert the Trumpcard Modem into the slot until it is firmly seated Note These are general installation instructions that apply to most computers Please refer to the manual accompanying...

Страница 19: ...hat has a male RJ 12 connector at one end and a PCMCIA Modem Adapter connector at the other For a multi function Trumpcard the Modem connection is identified on the back of the PC Card insert the PCMC...

Страница 20: ...Interface Module that has a PCMCIA Modem Adapter at one end For a multi function Trumpcard the Modem connection is identified on the back of the PC Card insert the PCMCIA Modem Adapter connector into...

Страница 21: ...s for getting started with your Modem Before You Begin Operating the Trumpcard Modem Using AT Commands Making an Outgoing Call Re Dialling the Last Number Storing a Number Connection Messages Ending Y...

Страница 22: ...ing this may help you later if you have communications problems Enabling The Trumpcard The Trumpcard Modem whether singular or part of a multi function PC Card has been configured such that it will be...

Страница 23: ...d line The Trumpcard automatically senses the speed and data format of your communications package provided it is set to one of the following formats Speed 110 300 600 1200 2400 4800 7200 9600 19200 3...

Страница 24: ...for a given period usually 30 seconds to detect dial tone before dialling the telephone number To wait for dial tone enter a W just before the telephone number You can also instruct the Modem to wait...

Страница 25: ...e Modem your Modem will respond with one of the following messages If the remote Modem responds with garbled characters or seems to have locked up refer to Setting Up For a Non Error Correcting Connec...

Страница 26: ...ier detected 45 CARRIER 75 1200 V 23 forward channel carrier detected 46 CARRIER 1200 carrier signal detected at 1200 bps 47 CARRIER 2400 carrier signal detected at 2400 bps 48 CARRIER 4800 carrier si...

Страница 27: ...command You may want to wait 30 seconds or so after your last transmission before disconnecting to ensure any data in the Modem buffer has cleared Setting Up for a Non Error Correcting Connection The...

Страница 28: ...255 Zero rings means do not answer If the Modem is not set to auto answer and an incoming call arrives the Modem will respond with a RING prompt To answer the call enter ATA ENTER This tells the Mode...

Страница 29: ...onditions The total connect time for this method can be up to 60 seconds For a MNP10 to MNP10 link negotiation at 4800 bps quick connect the Trumpcard initialization string would be AT F C1 D2S95 44 M...

Страница 30: ...phone is powered on etc are ready for operation prior to instructing the Modem to make an outgoing call The initialization string sent to the Trumpcard for cellular connections may not result in the...

Страница 31: ...is operational The AT T6 command is used for this purpose and returns a decimal number representing the current status The bit map for the status byte is Bit Description 0 Cellular phone is receiving...

Страница 32: ...4 12 Trumpcard 14400 28800 Modem Section Four...

Страница 33: ...ns software may handle all of the communications with the modem for you you may never have to issue an AT command yourself Refer to your communications software documentation for more information Also...

Страница 34: ...than 127 or the terminating character All command lines begin with AT in capital or lower case letters A command line can be terminated at any time by issuing CTRL X ASCII 018 The modem will ignore t...

Страница 35: ...or AT commands that is out of range the upper limit is stored and no ERROR message is reported Following the modem command description assume OK and ERROR as valid responses for almost all of the comm...

Страница 36: ...ol 1 Nn Automode Detection 1 On Return To The On Line State none P Set Pulse Dial As Default none Qn Result Code Display 0 Sn Reading Writing S Registers none T Set Tone Dial As Default none Vn Result...

Страница 37: ...0 Zn x Store Phone Number none Bn Transmit Break 3 Gn Modem to Modem Flow Control 0 Kn Break Control 5 Nn Operation Mode Control none Cn Compression Control 1 En Disable Enable Line Quality Monitor 0...

Страница 38: ...ommand A Answer Parameters none Default none This must be the last command entered into the command line The modem proceeds with the connect sequence in answer mode The modem will enter the connected...

Страница 39: ...red If an invalid character is entered that character and all subsequent characters in the dial string are ignored The modem truncates dial strings to 40 characters The ATD Parameters are L Dials the...

Страница 40: ...ng but is not as sophisticated Return To Command Mode After Dialling Added to the end of a dial string Causes the modem to remain in the command mode after it dials the digits proceeding the command T...

Страница 41: ...imer register S7 expires or a character is entered during the handshake process En Command Echo Parameters 0 or 1 Default 1 Controls the echo of characters received by the modem while the modem is in...

Страница 42: ...TF17 Permit 24000 bps connections only ATF18 Permit 26400 bps connections only ATF19 Permit 28800 bps connections only Only applicable to Trumpcard 28800 version Ms Select Line Modulation 28800 only P...

Страница 43: ...connection The value is decimal coded in units of bps e g 2400 specifies the lowest rate to be 2400 bps the default is 300 for 300 bps 4 max_rate is an optional number which specifies the highest rat...

Страница 44: ...ATI0 Reports the product code ATI1 Reports the checksum computed on the firmware ROM ATI2 Performs a checksum on the firmware ROM and indicates OK or ERROR ATI3 Reports firmware manufacturer identific...

Страница 45: ...ection is enabled Connections will be based on an automode algorithm This command is equivalent to F0 command On Return To The On Line State Parameters 0 or 1 Default none If the user enters the comma...

Страница 46: ...register reads or writes the contents of a S register or reports the value of a S register All the S registers may be read If no parameter is entered S0 is assumed The S can be omitted to assume the l...

Страница 47: ...d terminated with both carriage return and line feed control characters Short form numeric responses are only terminated with a carriage return control character see Xn command Examples ATV0 Allows sh...

Страница 48: ...ds only OK CONNECT RING NO CARRIER ERROR and NO ANSWER result codes Connection is established by blind dialling ATX1 Same as X0 with the addition of sending CONNECT XXXX XXXX rate result codes ATX2 Mo...

Страница 49: ...800 X X X X 12 CONNECT 9600 X X X X 13 CONNECT 7200 X X X X 14 CONNECT 12000 X X X X 15 CONNECT 14400 X X X X 16 CONNECT 19200 X X X X 17 CONNNECT 38400 X X X X 18 CONNECT 57600 X X X X 19 CONNECT 115...

Страница 50: ...X 58 CARRIER 28800 X X X X X 59 CONNECT 16800 X X X X 61 CONNECT 21600 X X X X 62 CONNECT 24000 X X X X 63 CONNECT 26400 X X X X 64 CONNECT 28800 X X X X 66 COMPRESSION CLASS 5 X X X X X 67 COMPRESSIO...

Страница 51: ...a warm start This command must be the last command on the command line The reset actions are 1 Clear serial port buffers 2 Set the baud rate and parity to match when any AT command is issued 3 Restor...

Страница 52: ...E 2 3 4 Q1 1 2 3 4 Q2 3 3 3 3 Q3 3 3 3 3 Q4 1 2 3 4 Q5 NONE 2 3 4 Q6 NONE 2 3 4 The DTR going off events corresponding to the action numbers in the above table are 1 Modem disconnects and sends OK res...

Страница 53: ...r is nearly full the modem will either send an XOFF command or drop CTS to stop the data flow When the buffer is nearly empty the modem will either send an XON command or raise CTS to start the data f...

Страница 54: ...n Mode Parameters 0 Default None Same as Q0 Pn Dial Pulse Ratio disabled for the U S Parameters 0 1 2 or 3 Default 0 Selects the ratio of the off hook make to an on hook break interval used when pulse...

Страница 55: ...ame as N2 command no fallback Q5 and S36 1 Same as N3 command fallback AT Q6 Selects asynchronous operation in Normal mode Speed Buffering In this mode the communications software speed can differ fro...

Страница 56: ...The escape sequence must be issued to return the modem to the command mode prior to sending this command Subsequent issuing of the O command while in the command mode will cause the local and remote m...

Страница 57: ...rns a 3 digit error count AT T8 Initiates local analog loopback with self test This test works similarly to T7 except that the test pattern is checked in the local analog loopback mode as in T1 This a...

Страница 58: ...settings are restored to the active configuration upon receiving an Zn command or at power up see Y command The user profile saved is denoted by the parameter value This command will yield an ERROR m...

Страница 59: ...ror correcting connection the break will be sent via the error correcting protocol giving no indication of length Result Codes NO CARRIER If not connected Gn Modem to Modem Flow Control Parameters 0 o...

Страница 60: ...during a non error correction connection the modem takes the following action AT K0 1 Modem clears the terminal and modem buffers and sends a BREAK to local communications software AT K2 3 Modem does...

Страница 61: ...onnection but will fallback to Normal mode if unable to establish an error correcting connection This command takes effect at physical connection time only AT N4 Selects LAPM error correction mode The...

Страница 62: ...Enable line quality monitor and fall back fall forward AT E3 Enable line quality monitor and auto retrain but hang up immediately when EQM reaches hang up threshold L Report Received Signal Level Para...

Страница 63: ...conversion AT K1 Enable V 42 LAPM to MNP 10 conversion AT K2 Enable V 42 LAPM to MNP 10 conversion inhibit MNP extended services initiation during V 42 LAPM detection phase Hn Link Negotiation Speed...

Страница 64: ...xed at 10 dBm adjust power level if remote is set to M1 AT M1 Adjust transmit level during retrain speed shift En Compromise Equalizer Parameters 0 or 1 Default 1 Enables or disables the V 32 compromi...

Страница 65: ...ciated with the event automatically Multiple event based commands can be on the same command line or can be entered on separate command lines The AT command s associated with an event are stored in vo...

Страница 66: ...ing the Zn command Default Register Settings The factory default values are stored in ROM and are loaded into the active configuration at power up or by the Zn command In addition the designated defau...

Страница 67: ...23 Bit Mapped Options 55 S24 Sleep Inactivity Timer 10 S25 Delay To DTR 5 S27 Bit Mapped Options 74 S28 Bit Mapper Options 0 S29 Reserved none S30 Inactivity Timer 0 S31 Bit Mapper Options 194 S32 XON...

Страница 68: ...Section Four S95 Extended Result Codes 0 Register value may be stored in one of two user profiles with the AT Wn command Writing to bit mapped options registers although possible can result in unreli...

Страница 69: ...55 ASCII decimal Default 43 S2 holds the decimal value of the ASCII character used as the escape character The default value corresponds to an ASCII A value over 127 disables the escape process i e no...

Страница 70: ...Blind Dialling Range 2 255 seconds Default 2 Sets the length of time to pause after the modem goes off hook and before the modem dials the first digit of the telephone number The modem always pauses...

Страница 71: ...rrier loss without causing the local modem to disconnect When register S10 is set to 255 the modem functions as if carrier is always present The actual interval the modem waits before disconnecting is...

Страница 72: ...The time is reset by any data activity or telephone line activity A value of zero will disable power down sleep mode S25 Delay to DTR Range 0 255 hundredths of a second Default 5 A change in DTR ON t...

Страница 73: ...the S48 register contains the value 128 and an attempted error correction link fails These fallback options are initiated immediately upon connection if S48 128 If an invalid number is entered the num...

Страница 74: ...S37 0 Attempt automode connection S37 1 3 Attempt to connect at 300 bps S37 4 Reserved S37 5 Attempt to connect at V 22 1200 bps S37 6 Attempt to connect at V 22bis 2400 bps S37 7 Attempt to connect...

Страница 75: ...he modem buffer before disconnecting If time expires before all data is sent the NO CARRIER result code will be issued to indicate that data has been lost If all data is transmitted prior to timeout t...

Страница 76: ...tion and negotiation phases and proceed at once with the fallback action specified in S36 Can be used to force MNP S86 Connection Failure Cause Code Range 0 4 5 9 12 13 or 14 Default 0 When the modem...

Страница 77: ...s register will enable the corresponding result code regardless of the Wn setting Bit 0 CONNECT result code indicates DCE speed instead of DTE speed Bit 1 Append ARQ to verbose CONNECT XXXX result cod...

Страница 78: ...ur address and telephone number are in the front of this manual Class 1 Commands Command Description FTS n Stop transmission and wait FRS n Receive silence FTM n Transmit data FRM n Receive data FTH n...

Страница 79: ...escribes the different tests that you can perform when you are trying to find the source of a problem Local Modem Self Test Local Analog Loopback Local Analog Loopback with Self Generated Pattern Remo...

Страница 80: ...characters appear on the screen both the Modem and software are set to local echo ON To set the Modem to local echo off enter ATE0 ENTER If 0 appears on your screen in place of OK the numeric form res...

Страница 81: ...mpcard 14400 28800 bps Trumpcard 28800 or less To start this test the Modem must be in command mode To run this test 1 Enter AT T1 ENTER Wait until the Modem returns a CONNECT message 2 Enter a test m...

Страница 82: ...command mode To start the test 1 Enter AT T8 ENTER and wait for a while The Modem will not respond visibly 2 Enter AT T0 ENTER to mark the end of the test The Modem will respond with a three digit num...

Страница 83: ...emote Modem or the telephone circuit If this is the case both local and remote stations may initiate local analog loopback tests to further isolate the source of the problem To perform this test 1 Ent...

Страница 84: ...ial test data sequence and the remote Modem echoes the data back The local Modem examines the returned data and establishes an error count each time a mismatch is detected To run this test 1 Establish...

Страница 85: ...mpcard 14400 28800 bps Trumpcard 28800 or less To run this test 1 Establish a connection with a remote Modem 2 Enter AT T3 ENTER to put the Modem into the local digital loopback mode 3 Instruct the re...

Страница 86: ...1 Enter ATI3 ENTER The Modem will respond with a line identifying the Modem and its capabilities Use this information when calling Ositech for technical support ROM Checksum Test This test compares t...

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