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| XE3314B June 2000 Low-Cost, Embeddable 33,600 BPS Modem Module Features Xecom's XE3314B is a complete, low-cost 33,600 bps * FCC Part 68 Registration transferrable to customer's Description modem in a single component. The XE3314B includes a transferrable FCC Part 68 Registration and is a UL1950 recognized component. The XE3314B is a complete modem and includes the DAA. XE3314B users do not need to add RAM, ROM, Crystals, transformers, or switches to complete the modem design. The user only needs to provide the TTL level, serial interface and the telephone jack. The XE3314B is a full-featured modem. Besides 33.6 Kbps data transfer, the XE3314B supports data compression, error correction and fax transfer. The XE3314B also includes NVRAM for permanent storage of the modem configuration. The XE3314B is pin compatible with Xecom's XE1414B modem. This family of modems permits a simple upgrade path from 14400 bps to 33,600 bps. system * UL1950 Recognized Component * Small Size: 2.75 inches by 1.38" by 0.42" * Modem Control and Configuration through industry standard AT Commands. * Modem Protocols: V.34bis, V.34, V.32bis, V.32, V.22bis, V.22, V.21, Bell 212A and 103 * Fax Protocols: V.17, V.29, V.27ter, and V.21 channel 2 * Error Correction; V.42, MNP2-4 and MNP10 * Data Compression; V.42bis and MNP5 provides a maximum effective data rate of 133,400 bps. * Pin compatible with Xecom's XE1414B, XE1414C, XE3314C and XE5614C. Serial I/O /DTR /RTS /CTS /DSR TXD RXD /DCD Block Diagram ROM Modem Cnrle otolr NVRAM Analog Front End Tip DAA Ring Auxiliary I/O RESET AR OH AMP XECOM (1) XE3314B XE3314B Mechanical Specifications INCHES PIN A B C D E F G H J K MIN 2.74 1.370 0.420 1.190 1.890 0.125 0.080 0.415 0.090 0.020 MAX 2.760 1.390 0.430 1.210 1.910 0.200 0.100 0.435 0.110 0.025 METRIC(MM) MIN 69.60 34.80 10.67 30.23 48.01 3.18 2.03 10.54 2.29 0.51 MAX 70.10 35.31 10.92 30.73 48.51 5.08 2.54 11.05 2.79 0.64 A B Denotes Pin 1 C D G H J F K Pins = 0.025 inch square pin All pins tin-plated E XE3314B PIN CONFIGURATION NC AR RXD NC NC NC NC NC /DTR TST3 /CTS NC TXD /RTS NC /RI TIP RING 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 18 20 22 21 AMP GND 40 39 38 37 36 35 34 33 32 31 30 29 28 27 VCC /DSR /DCD NC RESET NC NC NC NC NC OH NC TST1 TST2 XECOM (2) XE3314B XE3314B Pin Descriptions PIN NAME 1 2 NC AR DESCRIPTION No Internal Connection Auxiliary Data/Voice Relay, Active High Output, TTL/CMOS. The AR signal goes high when ever the modem is in the on-hook state. It can be connected to an external relay to switch control of the telephone line between the modem and an auxiliary handset when. Received Data, Output, TTL. Serial data output to the host. A logic "High" on RXD represents a "mark" and a logic "Low" represents a "space". No Internal Connection Data Terminal Ready, Input, active Low, TTL. The "AT&D" command sets the function of \DTR. The default, AT&D2, requires the host to assert \DTR to permit a modem link. The modem drops the call in progress if \DTR is revoked and will not connect until \DTR is re-asserted. Test 3 is used for manufacturing purposes only. It has no function in normal operation. Clear to Send, Output, active Low, TTL/CMOS. \CTS is used as a Flow Control output from the modem. The modem revokes \CTS with hardware flow control active to signal the host that the modem's input buffer is full. The modem reasserts \CTS when the buffer can accept more data without a buffer overflow. No Internal Connection Transmit Data, Input, TTL. Serial data input from the host. A logic "High" represents a "mark" and a Low represents a"space", TTL. Request to Send, input, active Low, TTL. The XE3314B uses \RTS for hardware flow control. When \RTS is revoked; hardware flow control is enabled, and the modem will not place data on RXD. No Internal Connection Ring Indicator, Output, active Low, TTL. When low indicates the modem is receiving a ring signal. Tip connection to the phone line(RJ11 pin3) from the internal DAA. The XE3314B is not sensitive to the battery voltage polarity across Tip and Ring. Ring connection to the phone line(RJ11 pin4) from the internal DAA. Ground (0 volts) Audio Output function is set by L & M commands and the value in register S22. This output can drive a minimum load of 300 ohms. 3 4-8 9 RXD NC \DTR 10 11 TST3 \CTS 12 13 14 15 16 18 20 21 22 27, 28 NC TXD \RTS NC \RI TIP RING GND AMP TST1, TST2 Test 1 and Test 2 are used for manufacturing test only. They have no function in normal use. These pins are connected to the telephone line side of the telephone interface circuit so isolation must be maintained between these signals and all other circuits. OH RESET N/C \DCD \DSR Vcc Off-Hook, Output, active High. OH indicates the modem's hookswitch relay is closed. Hookswitch closure connects the modem to the telephone line. This signal is available only on the XE3314B. Hardware reset pin, Input, active High, TTL. A high on Pin 36 initiates a hardware reset. An external reset is not required or recommended. The Reset pulse must be a minimum of 100 milliseconds long No Internal Connection Data Carrier Detect, Output Active Low, TTL/CMOS. The &C command sets the function of \DCD. In the default state \DCD activates when a valid carrier is detected. Data Set Ready, Output, active Low, TTL/CMOS. &S sets the \DSR function. In the default condition, AT&S0, \DSR is forced true. +5 Volts. 30 36 37 38 39 40 XECOM (3) XE3314B XE3314B Electrical Specifications Parameter VCC ICC Ring Voltage Detected Ring Frequency Detected Telephone Loop Current Data Transmit level DTMF Transmit Level Min 4.75 170 38 15.3 10 -12 Typ Max 5.25 Units Volts ma RMS Hz ma dBm dBm Comments 200 220 150 68 100 On Line XE3314B XE3314B -10.5 -2.5 -9.0 0 Avg over 3 second interval ABSOLUTE MAXIMUM RATINGS* SUPPLY VOLTAGE - Vcc DC INPUT VOLTAGE STORAGE TEMPERATURE RANGE LEAD TEMPERATURE (Soldering, 2 sec per wave) OPERATING TEMPERATURE RANGE *Exceeding these values may result in permanent damage to the device. +6.5 Volts -0.6 Volts to +6.5 Volts -25 C TO +85 C 260 C 0 TO 70 C XECOM (4) XE3314B XE3314B Typical Applications Schematic for US, Canada and Japan /DSR /DCD 16C450 UART VCC SIN RXD XE3314B XE3301 /DTR /CTS SOUT /RTS /RI /DTR /CTS TXD /RTS /RI /DSR /DCD Tip Ring AMP GND .2 ufd +5 Volts 50K LM386 .05 ufd 250 ufd L2 L1 10 ohms 8 ohm .5 W Speaker C1 4 3 Line J1 C2 Note: RJ11 Pin assignments reflect a 6-pin connector. Tip and Ring are always the center pins of the RJ11 jack. Recommended Parts Reference Designation L1, L2 C1, C2 J1 Description Ferrite Beads Capacitors RJ11 Jack Recommended Part Number TDK ACB2102L-120-X Panasonic ECKDRS471, 470 pfd, 2600 Volts Stewart SS6446NF XECOM (5) XE3314B XE3314B AT Commands Modes of Operation The XE3314B uses "AT" commands for control and configuration. The XE3314B operates in three modes; Command Mode, Fax Mode and Data Mode. Extensions to the AT command set support fax operation. Data Mode: The modem enters data mode after it establishes a link and issues a "CONNECT" result code. In Data Mode the modem modulates all signals on Transmit Data, Pin 13, and sends them to the remote modem. The modem demodulates the signal from the remote modem and places it onto Received Data, Pin 3, for the host equipment. When the modem exits data mode, it issues a "NO CARRIER" result code. Command Mode: The XE3314B enters command mode on application of power, reset, loss of the connection, or receipt of the escape sequence. In command mode the modem accepts commands from the host on Transmit Data. Appropriate result codes are returned on Received Data at the same speed and parity as the commands. Fax Mode: The modem enters fax mode on receipt of the AT+FCLASS=1 command. Fax commands and responses are issued at 19,200 bits per second; the character format is 8 bits no parity. The modem accepts Class 1 Fax commands only in fax mode. The A/, ATO, AT&T and escape commands are not valid in fax mode. Commands The modem is configured and controlled with AT commands. AT commands follow a strict format. The command line is stored in the command buffer and executed upon receipt of a carriage return. Until executed, the command line can be edited with the backspace key. Command Format - Each command, except A/, begins with the AT prefix. The "A" and "T" may be both upper case or both lower case but cannot be of different cases. The modem uses the prefix to identify the host's speed and parity. The modem determines speed by measuring the width of the incoming bits and parity by comparing the parity bits of the "A" and "T." The modem then returns result codes at the host's speed and parity. Command Line - A command line may include multiple commands. The modem executes the commands in the sequence they appear in the command line. Spaces, inserted to improve legibility, do not fill space in the command buffer. A carriage return terminates the command line and causes the commands to be executed. Register S3 allows the user to select a character other than a carriage return to terminate the command line. Command Buffer - The command buffer holds 40 characters, including the AT prefix. If it overflows, the modem issues an "ERROR" result code and commands are not executed. Command Line Editing - A backspace can be used to edit the command any time before it is executed. The backspace character, Control and H simultaneously on some systems, erases the previous character in the command line. Any character except for the "A" and "T" can be erased. Register S5 allows the user to select a character other than a backspace to edit the command line. Re-Execute Last Command - The A/ command causes the modem to re-execute the command line stored in the command buffer. This is the only command which does not require the "AT" prefix. Omitted Parameters - Most commands include a parameter which determines the command function. When the parameter is omitted from the command string, it is assumed to be a 0. Escape Characters - A three character escape sequence, entered while in data mode, will switch the modem into command mode while remaining on line. The escape character, set by Register S2, is entered 3 times in succession to execute the escape. The default escape sequence is "+++." Result Codes - The modem issues a result code after each action. Result codes may be provided as full words, numeric codes or may be disabled. Each result code ends with a carriage return when numeric result codes are chosen. When full word result codes are chosen, a Line Feed and Carriage Return precede and follow each result code. XECOM (6) XE3314B XE3314B AT Commands (continued) List of Commands An asterisk indicates the default setting of the command for the XE3314B. The default setting may be different for the European models. A - Answer Command - ATA forces the modem to immediately go off-hook and begin transmitting the answer tone sequence. Bn - Select Communications Standard - ATBn selects the modulation scheme used for connections below 2400 bits per second n=0 Selects CCITT standards n=1 Selects Bell standards* D - Dial Command - Below are the characters accepted in a dialing command. 0-9, #, * = Dialing Digits L = Re-dial last number P = Pulse dial T = Tone dial S=n = Dial stored number W = Wait for dial tone ^ = Toggles state of calling tone , = Pause for the duration of S8 @ = Wait for silence ! = Switch hook flash ; = Return to the command state En - Command Echo - ATEn determines whether commands will be echoed back to the host. n=0 Do not echo commands n=1 Enable command echo* Hn - Switch Hook Control - ATHn opens and closes the modem's hook switch. n=0 Switch hook relay opens n=1 The switch hook relay closes In - Modem Identification - ATIn Identifies the version of the modem. Ln - Speaker Volume - ATLn sets the amplitude of the modem's audio output. n=0 Lowest speaker volume n=1 Low speaker volume* n=2 Moderate speaker volume n=3 High speaker volume Mn - Speaker Activity - ATMn determines when the modem's audio output is active. n=0 Speaker off n=1 Speaker on until carrier received* n=2 Speaker remains on n=3 Speaker off during dialing, on until carrier Nn - Data Rate - ATNn selects whether or not the modem will negotiate a lower data link speed. n=0 Handshake only at DTE rate n=1 Negotiate highest common speed* On - On Line - ATOn switches the modem from the command mode to the data mode. n=0 Return On Line with no retrain* n=1 Initiate retrain returning On Line. Qn - Responses - ATQn determines if the modem will issue responses. n=0 Send responses* n=1 No Responses Sr? - Interrogate Register - ATSr? requests the current value in register Sr. Sr=n - Set Register Value - ATsr=n sets the value of register Sr to n. Vn - Result Codes - ATVn sets the modem to issue Numeric or Full Word result codes . n=0 Numeric Result Codes n=1 English Word Result Codes* Wn - Connect Message Rate - ATWn determines whether the data rate reported in the Connect response is the host data rate, the link data rate or whether both are provide along with the error control and data compression protocols negotiated. n=0 Send "CONNECT" at DTE Rate* n=1 Report line speed, DTE speed and Link protocol n=2 "CONNECT" Reports Link speed Xn - Result Code Set - ATXn selects which set of result codes the modem may send. n=0 Result codes 0 to 4 n=1 Result codes 0 to 5 and 10 n=2 Result codes 0 to 6 and 10 n=3 Result codes 0 to 5, 7 and 10 n=4 Full Result codes* XECOM (7) XE3314B XE3314B AT Commands (continued) Yn - Long Space Disconnect - ATYn determines if the modem will automatically disconnect if a continuous space is received for 1.6 seconds. n=0 Long Space Disconnect Disabled* n=1 Disconnect on long space Zn - Reset - ATZn executes a soft reset to the modem and resets the modem configuration. n=0 Reset to user profile 0* n=1 reset to user profile 1 &Cn - DCD Operation - AT&Cn determines the operation of the DCD output. n=0 DCD is forced active. n=1 DCD indicates a valid carrier* &Dn - DTR - AT&Dn determines how the modem will respond to changes to DTR. n=0 DTR is ignored by the modem. n=1 Enter command mode if DTR revoked. n=2 Disconnect if DTR revoked.* n=3 Soft reset when DTR revoked &Fn - Return to Factory Defaults - AT&Fn returns the modem configuration to one of two factory configurations. n=0 Restore configuration 0* n=1 Restore configuration 1 &Gn - Guard Tone - AT&Gn controls the guard tone produced by the modem n=0 Guard Tone Disabled* n=1 Guard Tone Disabled n=2 1800 Hz Guard Tone &Kn - Flow Control - AT&Kn selects the flow control method used by the modem. n=0 Disabled n=3 RTS/CTS n=4 XON/XOFF n=5 Transparent XON/XOFF n=6 RTS/CTS and XON/XOFF &Pn - Dial Pulse Make/Break Ratio - AT&Pn determines the specific pulse dialing parameters used by the modem. n=0 39/61% @ 10 pps* n=1 33/67% @ 10 pps n=2 39/61% @ 20 pps n=3 33/67% @ 20 pps &Qn - Line Connection - AT&Qn determines if error control or data buffering are active on the link. n=0 Direct mode (no data buffering)* n=5 Use Error Correction n=6 Normal Mode (Speed buffering) &Sn - DSR Operation - AT&Sn sets the operation of the DSR signal. n=0 DSR always active* n=1 DSR in accordance with V.25. &Tn - Test Modes - AT&T selects modem test modes. n=0 Exit test mode n=1 Local analog loopback n=3 Initiate local digital loopback n=4 Respond to remote loop request* n=5 Deny remote loop request n=6 Initiate a Remote Digital loopback n=7 Remote digital loopback w self-test n=8 Local analog loopback w self-test &Vn - View Configuration Profiles - AT&V permits the user to check on the modems current configuration. n=0 View active profile & user profile 0* n=1 View active profile & user profile 1 &Wn - Store Active Profile - AT&Wn stores the current modem configuration in NVRAM. n=0 Store active profile as profile 0* n=1 Store active profile as profile 1 &Yn - Recall Stored Profile - AT&Yn sets the stored modem configuration to be used after a hard reset. n=0 Recall profile 0 on power-up* n=1 Recall profile 1 on power-up &Zn=x - Store telephone number "x" in memory location "n" %En - Line Quality Monitor/Auto Retrain - AT%En determines if the modem will monitor line quality during a connection and initiate a retrain if quality drops below acceptable levels. n=0 Disabled n=1 Enabled n=2 Line quality, fallback, fall forward XECOM (8) XE3314B XE3314B AT Commands (continued) %L - Read Received Signal Level - AT%L permits the user to read the magnitude of the receive signal in dBm. %Q - Read Line Signal Quality - AT%Q permits the user to read the EQM value of the received signal. \An - MNP Block Size - AT|An sets the block size for MNP data packets. n=0 Maximum 64 characters n=1 Maximum 128 characters n=2 Maximum 192 characters n=3 Maximum 256 characters* \Bn - Transmit Break - AT\Bn selects the duration of the break signal sent. Break = n x 100 msec. \Gn - Modem Port Flow Control n=0 No Modem Port Flow Control n=1 XON/XOFF Port Flow Control \Kn - Break control - AT\Kn determines how the modem will handle a break signal. Break received from host with Reliable link. n=0 Enter on-line command mode; do not transmit break n=1 Purge buffers, immediately transmit break n=2 Same as n=0 n=3 Immediately send break n=4 same as n=0 n=5 Send break in sequence with data* Break received from host with Direct link . n=0 Immediately transmit break, then enter on-line command mode n=1 Immediately send break n=2 Enter command mode but do not transmit break n=3 same as n=1 n=4 same as n=0 n=5 same as n=1* Break received from modem w Normal link. n=0 Purge buffers, Immediately send break to the host n=1 same as n=0 n=2 Immediately send break to the host n=3 Same as n=2 n=4 Send break in sequence with data. n=5 Same as n=2* Host n=0 n=1 n=2 n=3 n=4 n=5 initiates break on Reliable link. Purge buffers and immediately transmit break Same as n=0 Immediately transmit break Same as n=1 Transmit break in sequence w data Same as n=4 \Nn - Error Control Selection - AT\Nn determines how the modem will handle error control negotiations. n=0 Normal mode, no error correction n=1 Direct mode, no buffering, no error correction n=2 Reliable mode, error correction required n=3 V.42 Auto-reliable mode, accept either an error controlled or non-error controlled link* n=4 V.42 Reliable mode, LAPM required n=5 MNP required -Kn - MNP Extended Services - AT-Kn determines how the modem handles MNP10. n=0 No LAPM to MNP10 conversion n=1 LAPM to MNP10 conversion* n=2 LAPM to MNP10 conversion but no MNP Extended Service during V.42 LAPM answer mode detect. +MS - Select Modulation - AT+MS sets the modulation and available data rates in the format shown below. AR+MS= a, b, c, d XECOM (9) XE3314B XE3314B Modem Registers S0 Answer on nth Ring: S0 sets the modem to automatically answer on the nth ring. Setting S0 to 0 disables automatic answer. Range: 0 to 255 Units Rings Default 0 Ring Count: S1 is a read-only register showing the number of rings detected. If a ring is not detected within 8 seconds, S1 is reset to zero. Range: 0 to 255 Units Rings Default 0 Escape Character: S2 determines the ASCII escape character. Values of 0-127 select valid ASCII escape characters; values from 128 to 255 disable the escape sequence. Range: 0 to 255 Units ASCII Character Default 43 (+) Carriage Return Character: S3 determines the ASCII character to serve as a carriage return to terminate commands and modem responses. Range: 0 to 127 Units ASCII Character Default 13 (Carriage Return) Line Feed Character: S4 sets the ASCII character to act as a line feed character in modem responses. Range: 0 to 127 Units ASCII Character Default 10 (Line Feed) Back Space Character: S5 defines the ASCII character used as a backspace to edit the command line. Range: 0 to 32 Units ASCII Character Default 8 (Back Space) Dial Tone Wait Time: S6 determines how long the modem waits for dial tone before dialing begins. The Dial Tone Wait Time cannot be set to less than two seconds. Range: 2 to 255 Units Seconds Default 2 S7 Wait for Carrier after Dialing: S7 determines how long the modem waits for a valid carrier signal after dialing is completed. Range: 1 to 255 Units Seconds Default 50 Comma Pause Time: S8 defines the duration of the pause initiated by a comma in the dialing string. The pause is generally used when waiting for a second dial tone. Range: 1 to 255 Units Seconds Default 50 Carrier Detect Response Time: S9 establishes the length of time the remote modem's carrier must be present to be recognized as valid. Range: 1 to 255 Units 0.1 Seconds Default 6 Carrier Off Disconnect Delay: S10 selects how long carrier must be lost before the modem disconnects. Note: If S10 is smaller than the value of S9, the modem will not automatically disconnect on loss of carrier. Range: 1 to 255 Units 0.1 Seconds Default 14 Tone Dialing Speed: S10 sets the duration and spacing of the dialing tones. S11 does not affect the pulse dialing rate. Range: 50 to 255 Units 1 Millisecond Default 95 Escape Code Guard Timer: S12 sets the escape sequence guard timer. If characters are received before or after the escape sequence, within the guard timer, the modem aborts the escape attempt and remains in data mode. Range: 0 to 255 Units 0.02 Seconds Default 50 S1 S8 S2 S9 S3 S10 S4 S11 S5 S12 S6 XECOM (10) XE3314B XE3314B Modem Registers (continued) S14 General Bit-Mapped Options: S14 reflects the state of several "AT" commands. Bit 0,4,6 Not Used Bit 1 0 = Echo Disabled (ATE0) 1 = Echo Active (ATE1) Bit 2 0 = Send Result Codes (ATQ0) 1 = No Result Codes (ATQ1) Bit 3 0 = Numeric Result Codes (ATV0) 1 = Full Word Result Codes (ATV1) Bit 5 0 = Tone Dialing Selected (T) 1 = Pulse Dialing Selected (P) Bit 7 0 = Answer 1 = Originate Test Status: S16 shows the modem test status. Bit 0 0 = No Local Analog Loopback 1 = Local ALB Active Bit 1 Not Used Bit 2 0 = Local Digital Loopback Disabled 1 = Local DLB Enabled Bit 3 0 = No Remote Digital Loopback 1 = Remote DLB Active Bit 4 0 = Remote DLB not requested 1 = Remote DLB Requested Bit 5 0 = Remote DLB w Self-Test Disabled 1 = Remote DLB w Self-Test Enabled Bit 6 0 = Local ALB w Self-Test Disabled 1 = Local ALB w Self-Test Enabled Bit 7 Not Used Test Timer: S18 sets the duration of any test. If S18 equals 0, AT&T0 terminates the test. Range: 0 to 255 Units Seconds Default 0 General Bit-Mapped Options: S21 reflects the state of several "AT" commands. Bit 0-2 Not Used Bit 3,4 0 = DTR ignored (&D0) 1 = Enter command mode on DTR off (&D1) 2 = Disconnect on DTR off (&D2) 3 = Reset on DTR off (&D3) Bit 5 0 = DCD always active (&C0) 1 = DCD on with Carrier (&C1) Bit 6 0 = DSR always active (&C0) 1= DSR on when modem ready (&C1) Bit 7 0 = No disconnect on Space (ATY0) 1 = Disconnect on Space (ATY1) S22 General Bit-Mapped Options: S22 reflects the state of several "AT" commands. Bit 0-1 0 = Low speaker volume (ATL0) 1 = Low speaker volume (ATL1) 2 = Moderate speaker volume (ATL2) 3 = High speaker volume (ATL3) Bit 2-3 0 = Speaker off (ATM0) 1 = Speaker off with carrier (ATM1) 2 = Speaker always on (ATM2) 3 = Speaker on during handshake (ATM3) Bit 4-6 0 = Basic Result codes (ATX0) 4 = Connect speed result codes (ATX1) 5 = No Blind Dial (ATX2) 6 = Busy Detection (ATX3) 7 = Full result codes (ATX4) Bit 7 Not Used General Bit-Mapped Options: S23 reflects the state of several "AT" commands. Bit 0 0 = Remote DLB Disabled (AT&T5) 1 = Remote DLB Allowed (AT&T4) Bit 1-3 0 = Host Interface at 300 bps 1 = Host Interface at 600 bps 2 = Host Interface at 1200 bps 3 = Host Interface at 2400 bps 4 = Host Interface at 4800 bps 5 = Host Interface at 9600 bps 6 = Host Interface at 19200 bps 7 = Host I/F at 38400 bps or higher Bit 4-5 0 = Even parity in use 1 = Not used 2 = Odd Parity in use 3 = No Parity in use Bit 6-7 0 = No Guard Tone (AT&G0) 1 = No Guard Tone (AT&G1) 2 = 1800 Hz guard tone (AT&G2) 3 = Not Used S16 S23 S18 S21 XECOM (11) XE3314B XE3314B Modem Registers (continued) S27 General Bit-Mapped Options: S27 reflects the state of several "AT" commands. Bit 0 1 3 0 0 0 = Normal Mode (AT&Q0) 1 0 1 = Error control enabled (AT&Q5) 0 1 1 = Direct Mode (AT&Q6) Bit 2, 4-5, 7 Not Used Bit 6 0 = CCITT Protocols (ATB0) 1 = Bell Protocols (ATB1) Pulse Dialing Bit-Mapped Options: S28 stores the modem's pulse dialing configuration. Bit 0-2, 5-7 Not Used Bit 3-4 0 = Make/Break ratio 39%/61%; 10 pulses per second (AT&P0) 1 = Make/Break ratio 33%/67%; 10 pulses per second (AT&P1) 2 = Make/Break ratio 39%/61%; 20 pulses per second (AT&P2) 3 = Make/Break ratio 33%/67%; 20 pulses per second (AT&P3) Hook Flash Timer: S29 determines the length for time the modem closes its off-hook relay on receipt of the "!" dial modifier to simulate a switch hook flash. Range: 0 to 255 Units 10 milliseconds Default 70 Disconnect on Inactivity Timer: S30 sets the periond the modemis idle before it disconnects . A 0 disables the inactivity timer. Range: 0 to 255 Units 10 Seconds Default 0 General Bit-Mapped Options: S31 stores the status of various AT commands. Bit 0 0 = No single-line Connect messages (AT\V0) 1 = Use single-line connect messages (AT\V1) Bit 1 0 = No Automode detection (ATN0) 1 = Automode detection active (ATN1) Bit 2-3 0 = Report host speed (ATW0) 1 = Report all parameters (ATW1) 2 = Report modem speed only (ATW2) Bit 4-7 Not Used S32 XON Character: S32 determines the ASCII character to be sent as XON for in-band flow control. Range: 0 to 255 Units ASCII Character Default 11 (VT) XOFF Character: S32 determines the ASCII character to be recognized as XOFF for in-band flow control. Range: 0 to 255 Units ASCII Character Default 19 (DC3) LAPM Failure: S36 instructs the modem what to do if the error control negotiations fail. Bit 0-2 0 = Modem Disconnects 1 = Establish Direct Connection 3 = Establish normal Connection 4 = Disconnect if MNP handshake fails 5 = Establish Direct Connection if MNP handshake fails. 7 = Establish Normal Connection if MNP handshake fails. Bit 3-7 Not Used Forced Disconnect Timer: S38 sets the delay between receipt of the command to disconnect and the actual opening of the switch hook. If S38 is set to 255 the modem disconnects only after its buffers are empty. Range: 0 to 255 Units 1 Second Default 20 Flow Control Bit-Mapped Options: S39 shows the modem's flow control status, AT&K. Bit 0-2 0 = Flow Control Disabled 3 = Hardware Flow Control, RTS/CTS 4 = In-Band Flow Control XON/XOFF 5 = Transparent In-Band Flow Control 6 = Both Hardware and In-Band Flow Control Bit 3-7 Not use S33 S28 S36 S29 S38 S30 S39 S31 XECOM (12) XE3314B XE3314B Modem Registers (continued) S40 MNP Bit-Mapped Options: S40 shows the status of the modem's MNP commands, . Bit 0-1 0 = No LAPM to MNP10 conversion (AT-K0) 1 = Enable LAPM to MNP10 conversion (AT-K1) 2 = Enable LAPM to MNP10 conversion except for LAPM answer mode (AT-K1) Bit 2 Not Used Bit 3-5 0 = AT\K0 break handling selected 1 = AT\K1 break handling selected 2 = AT\K2 break handling selected 3 = AT\K3 break handling selected 4 = AT\K4 break handling selected 5 = AT\K5 break handling selected Bit 6-7 0 = MNP Block size 64 characters 1 = MNP Block size 128 characters 2 = MNP Block size 192 characters 3 = MNP Block size 256 characters General Bit-Mapped Options: S41 stores the condition of various "AT" commands. Bit 0-1 0 = No Data Compression (AT%C0) 1 = MNP5 Data Compression (AT&C1) 2 = V.42bis Data Compression (AT&C2) 3 = Either MNP5 or V.42bis Data Compression (AT&C3) Bit 2, 6 0 0 = No Fallback/Forward (AT%E0) 1 0 = Retrain Enabled (AT%E1) 0 0 = Fallback/Forward Enabled (AT%E2) Bit 3-5, 7 Not Used S46 Data Compression Control: S46 selects whether or not the modem will support data compression with error control. S46=136 No data compression S46=138 Data Compression selected Default 138 V.42 Negotiations: S48 determines the modem's V.42 negotiation process. S48=0 Proceed with LAPM S48=7 Negotiate per V.42 S48=128 Assume LAPM failure Default 7 Call Failure Code: S86 shows why the last "NO CARRIER response was issued. S86=0 Normal Disconnect S86=4 Loss of Carrier S86=5 V.42 Negotiation Failure S86=9 Modem Handshake Failure S86=12 Disconnect Initiated by remote modem S86=13 No response after 10 retries S86=14 Protocol Violation Extended Result Codes: S95 permits the user to customize the extended result codes. Bit 0 Connect result code shows link speed Bit 1 Add /ARQ to connect response Bit 2 Add /VFC to Carrier response Bit 3 Enable Protocol response Bit 4 Not Used Bit 5 Enable Compression Result Code Bit 6 Not used Bit 7 Not Used S48 S86 S41 S95 XECOM (13) XE3314B XE3314B Class 1 Fax Commands AT+FCLASS? - Service Class Indication 0 = Configured as a data modem 1 = Configured for Service Class 1. AT+FCLASS=? - Service Class Capability 0 = Configured as a data modem 1 = Configured for Service Class 1. AT+FCLASS=n - Set Service Class 0 = Configured as a data modem 1 = Configured for Service Class 1. AT+FAE=n - Data/Fax Auto Answer 0 = Answer as a fax modem only 1 = Either a fax or data modem AT+FF - Enhanced Flow Control AT+FRH |
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