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&T0

Terminate any test in progress.

&T1

Initiate local analog loopback.

&T2

Returns ERROR result code.

&T3

Initiate local digital loopback.

&T4

Allow remote digital loopback.

&T5

Disallow remote digital loopback request.

&T6

Request an RDL without self-test.

&T7

Request an RDL with self-test.

&T8

Initiate local analog loop with self-test.

Display current configurations.

&W0

Store the active profile in NVRAM profile 0.

&W1

Store the active profile in NVRAM profile 1.

&X0

Select internal timing for the transmit clock.

&X1

Select external timing for the transmit clock.

&X2

Select slave receive timing for the transmit clock.

&Y0

Recall stored profile 0 upon power up.

&Y1

Recall stored profile 1 upon power up.

&Zn=x

Store dial string x (to 35) to location n (0 to 3 depending upon modem model).

%E0

Disable line quality monitor and auto retrain.

%E1

Enable line quality monitor and auto retrain.

%E2

Enable line quality monitor and fallback/fall forward.

Return received line signal level.

Report the line signal quality.

\G0

Disable modem to modem flow control.

\G1

Enable modem to modem flow control.

\Kn

Controls break handling during three states:

When modem receives a break from the DTE:
\K0,2,4

Enter on-line command mode, no break sent to the remote modem.

\K1

Clear buffers and send break to remote modem.

\K3

Send break to remote modem immediately.

\K5

Send break to remote modem in sequence with transmitted data.

When modem receives \B in on-line command state:
\K0,1

Clear buffers and send break to remote modem.

\K2,3

Send break to remote modem immediately.

\K4,5

Send break to remote modem in sequence with transmitted data.

When modem receives break from the remote modem:
\K0,1

Clear data buffers and send break to DTE.

\K2,3

Send a break immediately to DTE.

\K4,5

Send a break with received data to the DTE.

\N0

Select normal speed buffered mode.

\N1

Select direct mode.

\N2

Select reliable link mode.

\N3

Select auto reliable mode.

\N4

Force LAPM mode.

\N5

Force MNP mode.

2.2.

ECC COMMANDS

%C0

Disable data compression.

%C1

Enable MNP 5 data compression.

%C2

Enable V.42 bis data compression.

%C3

Enable both V.42 bis and MNP 5 compression.

\A0

Set maximum block size in MNP to 64.

\A1

Set maximum block size in MNP to 128.

\A2

Set maximum block size in MNP to 192.

\A3

Set maximum block size in MNP to 256.

\Bn

Send break of n x 100 ms.

Содержание LPM-14-E

Страница 1: ...Traffic Model LPM 14 E High Speed Low Power Modem REFERENCE MANUAL Peek Traffic Inc 1996 Peek Traffic Inc All Rights Reserved Rev 1 January 16 1997 1500 North W ashington Blvd Sarasota FL 34236 941 366 8770 ...

Страница 2: ...tion 3 4 Hn Disconnect Hang Up 3 4 In Identification 3 5 Ln Speaker Volume 3 5 Mn Speaker Control 3 5 Nn Automode Enable 3 5 On Return to On Line Data Mode 3 5 P Set Pulse Dial Default 3 6 Qn Quiet Results Codes Control 3 6 Sn Read Write S Register 3 6 T Set Tone Dial Default 3 6 Vn Result Code Form 3 6 Wn Connect Message Control 3 7 Xn Extended Result Codes 3 7 Table 3 1 Result Codes 3 8 Yn Long ...

Страница 3: ...3 16 3 4 MNP 10 COMMANDS 3 17 3 4 1 AT Commands 3 17 Mn Enable Cellular Power Level Adjustment 3 17 Hn Link Negotiation Speed 3 17 Kn MNP Extended Services 3 18 Qn Enable Fallback to V 22 bis V 22 3 18 Mn Initial Cellular Power Level Setting 3 18 E Compromise Equalizer Enable Command 3 18 4 S REGISTERS 4 1 4 1 FACTORY DEFAULTS 4 1 4 2 S REGISTER DEFINITIONS 4 1 S0 Number of Rings to Auto Answer 4 ...

Страница 4: ... S46 Data Compression Control 4 7 S48 V 42 Negotiation Action 4 7 S82 Break Handling Options 4 8 S86 Call Failure Reason Code 4 8 S91 PSTN Transmit Attenuation Level 4 8 S92 Fax Transmit Attenuation Level 4 8 S95 Extended Result Codes 4 8 S201 Cellular Transmit Level 4 8 6 FAX CLASS 1 COMMANDS 5 1 6 1 FAX I O PROCESSING 5 1 6 1 1 DTE to Modem Transmit Data Stream 5 1 6 1 2 Modem to DTE Receive Dat...

Страница 5: ...tandby mode and only 3 6 Watts while active the LPM 14 E is suited for systems that are powered by solar energy It will reliably communicate with remote modems at temperatures ranging from 40C to 80C and up to 95 non condensing humidity The LPM 14 E is fully compatible with the CCITT V 32bis V 32 V 22bis V 22 Bell 212A and Bell 103 allowing it to communicate at speeds from 300 to 14 400 baud with ...

Страница 6: ...rier signal detected RD Receiving data from DTE SD Sending data to the DTE 1 4 INSTALLATION As with standard modem equipment the LPM 14 E comes with the required connections on the back panel to allow it to be connected to any Data Terminal Equipment DTE Figure 1 2 shows the connectors and their functions An RS 232C cable from the DTE equipment connects to the RS 232 port as shown DC supply rangin...

Страница 7: ... same time all characters received from the DTE will be transmitted to the remote modem Depending on the setting of parameters in the active modem profile data to be transmitted may be compressed and or formatted for automatic error correction Data received from the DTE will first be formatted by either MNP 4 or V 42 algorithm for automatic error correction by the remote modem then they are compre...

Страница 8: ...e type I4 Report response programmed by an OEM I5 Report the country code parameter I6 Report modem data pump model and code revision I7 Reports the DAA code W class models only L0 Set low speaker volume L1 Set low speaker volume L2 Set medium speaker volume L3 Set high speaker volume M0 Turn speaker off M1 Turn speaker on during handshaking and turn speaker off while receiving carrier M2 Turn spe...

Страница 9: ...he modem hangs up F0 Restore factory configuration 0 F1 Restore factory configuration 1 G0 Disable guard tone G1 Disable guard tone G2 Enable 1800 Hz guard tone J0 Set S Register response only for compatibility J1 Set S Register response only for compatibility K0 Disable DTE DCE flow control K3 Enable RTS CTS DTE DCE flow control K4 Enable XON XOFF DTE DCE flow control K5 Enable transparent XON XO...

Страница 10: ...Enable modem to modem flow control Kn Controls break handling during three states When modem receives a break from the DTE K0 2 4 Enter on line command mode no break sent to the remote modem K1 Clear buffers and send break to remote modem K3 Send break to remote modem immediately K5 Send break to remote modem in sequence with transmitted data When modem receives B in on line command state K0 1 Cle...

Страница 11: ... bps V 22 Q1 Enable MNP 10 fallback to 2400 bps V 22 bis 1200 bps V 22 M0 Select initial transmit level of 26 dBm M1 Select initial transmit level of 30 dBm M2 Select initial transmit level of 10 dBm M3 M10 Select initial transmit level of 10 dBm M11 Select initial transmit level of 11 dBm M12 Select initial transmit level of 12 dBm M30 Select initial transmit level of 30 dBm M31 Select initial tr...

Страница 12: ...ace character a space character and another backspace The hex value to be used for the backspace character is programmable through register S5 Values equal to 0 or greater than 127 or the value which corresponds to the carriage return character cannot be used for the backspace character This editing is not applicable to the AT header of a command A command line may be aborted at any time by enteri...

Страница 13: ...go on line in answer mode If FCLASS 0 is selected the modem will enter the connect state after exchanging carrier with the remote modem If no carrier is detected within a period specified in register S7 the modem hangs up Any character entered during the connect sequence will abort the connection attempt If FCLASS 1 or 2 is selected to prepare the modem to answer a Fax call the modem will go off h...

Страница 14: ...mbers that follow until a P is encountered Affects current and subsequent dialing S n Dial the number stored in the directory n 0 to 3 See Z Flash the modem will go on hook for a time defined by the value of S29 W Wait for dial tone the modem will wait for dial tone before dialing the digits following W If dial tone is not detected within the time specified by S7 the modem will abort the rest of t...

Страница 15: ...eed for a subsequent connection Sets N0 sets S37 to 5 and clears S31 bit 1 This command is equivalent to the command string ATN0S37 5 F5 Selects V 22 bis as the only acceptable line modulation for a subsequent connection Sets N0 sets S37 to 6 and clears S31 bit 1 This command is equivalent to the command string ATN0S37 6 F6 Select V 32 bis 4800 or V 32 4800 as the only acceptable line modulation f...

Страница 16: ...shment but off when receiving carrier Default M2 Speaker is always on M3 Speaker is off when receiving carrier and during dialing but on during answering Result Codes OK n 0 to 3 ERROR Otherwise Nn Automode Enable This command enables or disables Automode detection The parameter value if valid is written to S31 bit 1 N0 Automode detection is disabled A subsequent handshake will be conducted accord...

Страница 17: ...example ATS7 establishes S7 as the last accessed register AT 40 sets the contents of the last register accessed to 40 ATS 20 sets the contents of the last register accessed to 20 If the number n is beyond the range of the S Registers available the modem will return the ERROR message The value v is MOD ed with 256 If the result is outside the range permitted for a given S Register the values will s...

Страница 18: ...ote that the information below is based upon the default implementation of the X results table Table 3 1 indicates the messages which are enabled for each X value If the modem is in facsimile mode FCLASS 1 or 2 the only message sent to indicate a connection is CONNECT without a speed indication X0 Disables monitoring of busy tones send only OK CONNECT RING NO CARRIER ERROR and NO ANSWER result cod...

Страница 19: ...S 5 x x x x x 67 COMPRESSION V 42 bis x x x x x 69 COMPRESSION NONE x x x x x 76 PROTOCOL NONE x x x x x 77 PROTOCOL LAPM x x x x x 80 PROTOCOL ALT x x x x x 81 PROTOCOL ALT CELLULAR x x x x x F4 FCERROR x x x x x Note An x in a column indicates that the message either the long form if verbose or the value only for short form will be generated when that particular value of n shown at the top of th...

Страница 20: ...s the modem to hang up Auto answer is inhibited D1 DTR drop is interpreted according to the current Qn setting as follows Q0 Q1 Q4 Q5 Q6DTR drop is interpreted by the modem as if the asynchronous escape sequence had been entered The modem returns to asynchronous command state without disconnecting Q2 Q3 DTR drop causes the modem to hang up Auto answer is inhibited D2 DTR drop is interpreted accord...

Страница 21: ... is written to S27 bit 2 L0 Selects dial up line operation L1 Selects leased line operation Result Codes OK n 0 or 1 ERROR Otherwise Mn Asynchronous Synchronous Mode Selection This command determines the DTR operating mode The modem treats the M command as a subset of the Q command M0 Selects direct asynchronous operation Note that the command sequence M0 N0 selects normal buffered mode but the co...

Страница 22: ...terface HSI capability in the DTE provides synchronous communication capability from an asynchronous terminal Starting AutoSync Set registers S19 S20 and S25 to the desired values before selecting AutoSync operation with Q4 After the CONNECT message is issued the modem waits the period of time specified by S25 before examining DTR If DTR is on the modem enters the synchronous operating state if DT...

Страница 23: ...t self test If no connection exists ERROR is returned Sets S16 bit 4 when the test is in progress The CONNECT XXXX message is displayed upon the start of the test T7 Requests a remote digital loopback RDL V 54 Loop 2 with self test In self test a test pattern is looped back and checked by the modem If no connection exists ERROR is returned When the test is terminated either via expiration of S18 o...

Страница 24: ... configuration as profile 0 W1 Store the current configuration as profile 1 Result Codes OK n 0 or 1 ERROR Otherwise Yn Designate a Default Reset Profile Selects which user profile will be used after a hard reset Y0 The modem will use profile 0 Y1 The modem will use profile 1 Result Codes n 0 to 1 ERROR If n 1 Zn x Store Telephone Number The modem can store up to 4 telephone numbers and each telep...

Страница 25: ...m will only do retrains if EQM thresholds are exceeded If the EQM is sufficient for at least one minute the modem will initiate a rate renegotiation to a higher speed within the V 32 V 32 bis modulation speeds The rate renegotiations will be done without a retrain if a V 32 bis connection is established Speeds attempted during fallback fall forward are those shown to be available in the rate seque...

Страница 26: ... during a data connection and the B is received in order to send a break to the remote modem K0 K1 Clear data buffers and send break to remote modem K2 K3 Send break to remote modem immediately K4 K5 Send break to remote modem in sequence with data Default to K5 The third case is where a break is received from a remote modem during a non error corrected connection K0 K1 Clears data buffers and sen...

Страница 27: ...its 6 and 7 A0 64 characters A1 128 characters Default A2 192 characters A3 256 characters Result Codes OK n 0 to 3 ERROR Otherwise Bn Transmit Break to Remote In non error correction mode the modem will transmit a break signal to the remote modem with a length in multiples of 100 ms according to parameter specified If a number in excess of 9 is entered 9 is used The command works in conjunction w...

Страница 28: ...owing tables define the power levels chosen for each mode of operation The transmit power levels are given in the form initial final where initial is the power level of the handshake at V 22 in H1 modes or the power level of the initial V 32 bis handshake in H0 or H2 modes and final is the power level of the subsequent V 32 bis handshake in H1 modes or the power level after a retrain in H0 or H2 m...

Страница 29: ... to 2400 bps V 22 bis and 1200 bps V 22 Default Result Codes OK n 0 or 1 ERROR Otherwise Mn Initial Cellular Power Level Setting Sets the initial transmit power level for upshift at connect until line conditions can be determined M0 corresponds to 26ÊdBm M1 corresponds to 30 dBm M2 through M10 correspond to 10 dBm and M11 through M31 correspond to 11 dBm to 31 dBm respectively The parameter value ...

Страница 30: ... 1 255 0 1 s 6 S10 Carrier Loss Disconnect Time 1 255 0 1 s 14 S11 DTMF Tone Duration 50 255 0 001 s 95 S12 Escape Prompt Delay 0 255 0 02 s 50 S13 Reserved S14 General Bit Mapped Options Status 138 8Ah S15 Reserved S16 Test Mode Bit Mapped Options Status T 0 S17 Reserved S18 Test Timer 0 255 s 0 S19 AutoSync Options 0 S20 AutoSync HDLC Address or BSC Sync 0 255 0 S21 V 24 General Bit Mapped Optio...

Страница 31: ...ne When the echo command is enabled the modem echoes back to the local DTE the Backspace character an ASCII space character and a second Backspace character this means a total of three characters are transmitted each time the modem processes the Backspace character Range 0 32 ASCII decimal Default 8 Backspace S6 Wait Time for Dial Tone Before Blind Dialing or After W Dial Modifier Sets the length ...

Страница 32: ... on pulse dialing Range 50 255 milliseconds Default 95 95 milliseconds S12 Escape Prompt Delay EPD Defines the maximum period in fiftieths of a second allowed between receipt of the last character of the three escape character sequence from the DTE and sending of the OK result code to the DTE If any characters are detected during this time the OK will not be sent Note that sending of the OK result...

Страница 33: ...havior Dn 0 D0 Default 1 D1 2 D2 3 D3 Bit 5 RLSD DCD behavior Cn 0 C0 Default 1 C1 Bit 6 DSR behavior Sn 0 S0 Default 1 S1 Bit 7 Long space disconnect Yn 0 Y0 Default 1 Y1 S22 Speaker Results Bit Mapped Options Status Indicates the status of command options Default to 117 75h 01110101b Bits 0 1 Speaker volume Ln 0 L0 1 L1 Default 2 L2 3 L3 Bits 2 3 Speaker control Mn 0 M0 1 M1 Default 2 M2 3 M3 Bi...

Страница 34: ...2 3 33 67 make break ratio at 20 pulses per second P3 Bit 5 Reserved Bits 6 7 MNP Link Negotiation Speed Hn 0 Link negotiation at highest speed H0 Default 1 Link negotiation at 1200 bps H1 2 Link negotiation at 4800 bps H2 S29 Flash Dial Modifier Time Sets the length of time in units of 10 ms that the modem will go on hook when it encounters the flash dial modifier in the dial string The time can ...

Страница 35: ...on F0 Default 1 3 Attempt to connect at 300 bps F1 4 Reserved 5 Attempt to connect at V 22 1200 bps F4 6 Attempt to connect at V 22 bis 2400 bps F5 7 Attempt to connect at V 23 F3 8 Attempt to connect at V 32 bis V 32 4800 bps F6 9 Attempt to connect at V 32 bis V 32 9600 bps F8 10 Attempt to connect at V 32 bis 12000 bps F9 11 Attempt to connect at V 32 bis 14400 bps F10 12 Attempt to connect at ...

Страница 36: ...d En Bit 6 Bit 2 0 0 Retrain and fallback fall forward disabled E0 Default 0 1 Retrain enabled E1 1 0 Fallback fall forward enabled E2 Bit 3 Modem to modem flow control 0 G0 Default 1 G1 Bit 7 Enable fallback to V 22 bis V 22 Qn 0 Disabled Q0 1 Enabled Q1 Default S46 Data Compression Control Controls selection of compression The following actions are executed for the given values Range 136 or 138 ...

Страница 37: ...attenuation level from 0 to 15 dBm for the fax mode resulting in a transmit level from 0 to 15dBm Range 0 to 15 dBm Corresponding to 0 to 15 dBm transmit level Default 10 10 dBm transmit level S95 Extended Result Codes The bits in this register can be set to override some of the Wn command options A bit set to a 1 in this register will enable the corresponding result code regardless of the Wn sett...

Страница 38: ...ters mode FRH 3 and sends the CONNECT message to the DTE when FSK flags are detected from the remote 5 1 5 Fax Answering Answering of fax calls is identical to answering of data calls with the exception that the modem enters the fax handshaking mode instead of the data handshaking mode after going off hook If FAE 0 the modem after sending answer tone automatically enters fax mode FTH 3 sends the C...

Страница 39: ...is in effect or if the modem detects a high to low transition of the DTR signal while D1 is in effect it sends DLE ETX to the DTE generates OK result code and returns to command mode The receive buffer is cleared and all data received from the remote is discarded If the modem detects a DTR drop while D2 is in effect it goes on hook sends DLE ETX to the DTE generates OK result code and returns to c...

Страница 40: ...ta modem and answer accordingly Parameters n 0 or 1 Command options n 0 Disable data fax auto answer mode The modem answers as a fax modem only Default n 1 Enable data fax auto answer mode The modem answers as a fax or data modem After a data not fax connection is achieved indicated by the DATA result code the DTE must issue an ATO command to cause the modem to go on line FTS n Stop Transmission a...

Страница 41: ...5 4 FTM 145 V 17 14400 bps long FTM 146 V 17 14400 bps short ...

Страница 42: ...See Command options Command options FTH 3 V 21 channel 2 300 bps FTH 24 V 27 ter 2400 bps FTH 48 V 27 ter 4800 bps FTH 72 V 29 7200 bps FTH 73 V 17 7200 bps long FTH 74 V 17 7200 bps short FTH 96 V 29 9600 bps FTH 97 V 17 9600 bps long FTH 98 V 17 9600 bps short FTH 121 V 17 12000 bps long FTH 122 V 17 12000 bps short FTH 145 V 17 14400 bps long FTH 146 V 17 14400 bps short FRH n Receive Data with...

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