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xecom (1) XE3314B low-cost, embeddable 33,600 bps modem module XE3314B june 2000 block diagram modem controller rom nvram analog front end daa /dtr /rts /cts /dsr txd rxd /dcd serial i/o reset ar oh amp tip ring auxiliary i/o description xecom's XE3314B is a complete, low-cost 33,600 bps 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 compres- sion, 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. features * fcc part 68 registration transferrable to customers 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.
xecom (2) XE3314B XE3314B mechanical specifications a b denotes pin 1 c d g j h e f k pins = 0.025 inch square pin all pins tin-plated XE3314B pin configuration nc ar rxd nc nc nc nc nc /dtr tst3 /cts nc txd /rts nc /ri tip ring vcc /dsr /dcd nc reset nc nc nc nc nc oh nc tst1 tst2 amp gnd 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 18 20 40 39 38 37 36 35 34 33 32 31 30 29 28 27 22 21 a 2.74 2.760 69.60 70.10 b 1.370 1.390 34.80 35.31 c 0.420 0.430 10.67 10.92 d 1.190 1.210 30.23 30.73 e 1.890 1.910 48.01 48.51 f 0.125 0.200 3.18 5.08 g 0.080 0.100 2.03 2.54 h 0.415 0.435 10.54 11.05 j 0.090 0.110 2.29 2.79 k 0.020 0.025 0.51 0.64 inches metric(mm) pin min max min max
xecom (3) XE3314B pin name description XE3314B pin descriptions 1 nc no internal connection 2 ar 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. 3 rxd 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". 4-8 nc no internal connection 9 \dtr 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. 10 tst3 test 3 is used for manufacturing purposes only. it has no function in normal operation. 11 \cts 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. 12 nc no internal connection 13 txd transmit data, input, ttl. serial data input from the host. a logic "high" represents a "mark" and a low represents a"space", ttl. 14 \rts 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. 15 nc no internal connection 16 \ri ring indicator, output, active low, ttl. when low indicates the modem is receiving a ring signal. 18 tip 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. 20 ring ring connection to the phone line(rj11 pin4) from the internal daa. 21 gnd ground (0 volts) 22 amp 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. 27, 28 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. 30 oh 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. 36 reset 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 37 n/c no internal connection 38 \dcd 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. 39 \dsr data set ready, output, active low, ttl/cmos. &s sets the \dsr function. in the default condition, at&s0, \dsr is forced true. 40 vcc +5 volts.
xecom (4) XE3314B XE3314B electrical specifications vcc 4.75 5.25 volts icc 170 200 220 ma on line ring voltage detected 38 150 rms XE3314B ring frequency detected 15.3 68 hz telephone loop current 10 100 ma XE3314B data transmit level -12 -10.5 -9.0 dbm dtmf transmit level -2.5 0 dbm avg over 3 second interval parameter min typ max units comments absolute maximum ratings* supply voltage - vcc +6.5 volts dc input voltage -0.6 volts to +6.5 volts storage temperature range -25 c to +85 c lead temperature (soldering, 2 sec per wave) 260 c operating temperature range 0 to 70 c *exceeding these values may result in permanent damage to the device.
xecom (5) XE3314B XE3314B typical applications schematic for us, canada and japan tip ring l1 l2 c1 c2 j1 vcc txd rxd +5 volts 50k .2 ufd 250 ufd .05 ufd 10 ohms 8 ohm .5 w speaker amp 4 3 line gnd lm386 /ri /rts /cts /dtr /dsr /dcd 16c450 uart /dsr /dcd sin /dtr /cts sout /rts /ri xe3301 note: rj11 pin assignments reflect a 6-pin connector. tip and ring are always the center pins of the rj11 jack. recommended parts refer ence designation description recommended part number l1, l2 ferrite beads tdk acb2102l-120-x c1, c2 capacitors panasonic eckdrs471, 470 pfd, 2600 volts j1 rj11 jack stewart ss6446nf XE3314B
xecom (6) XE3314B 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. exten- sions to the at command set support fax operation. data mode: the modem enters data mode after it es- tablishes 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 con- nection, or receipt of the escape sequence. in com- mand mode the modem accepts commands from the host on transmit data. appropriate result codes are re- turned 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 re- sponses are issued at 19,200 bits per second; the char- acter 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 com- mands. at commands follow a strict format. the command line is stored in the command buffer and ex- ecuted upon receipt of a carriage return. until ex- ecuted, the command line can be edited with the back- space key. command format - each command, except a/, begins with the at prefix. the "a" and "t" may be both up- per 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 mo- dem then returns result codes at the host's speed and parity. command line - a command line may include mul- tiple 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 ex- ecuted. 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 se- lect a character other than a backspace to edit the com- mand 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 com- mand which does not require the "at" prefix. omitted parameters - most commands include a pa- rameter 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 se- quence, entered while in data mode, will switch the mo- dem 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 es- cape 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 cho- sen, a line feed and carriage return precede and fol- low each result code. XE3314B at commands
xecom (7) XE3314B 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 immedi- ately go off-hook and begin transmitting the answer tone se- quence. 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 com- mand 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* XE3314B at commands (continued)
xecom (8) XE3314B yn - long space disconnect - atyn determines if the mo- dem will automatically disconnect if a continuous space is re- ceived 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 re- sets 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 re- spond 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 mo- dem 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 pro- duced 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 mo- dem 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 mo- dem 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 de- termines if the modem will monitor line quality during a con- nection and initiate a retrain if quality drops below acceptable levels. n=0 disabled n=1 enabled n=2 line quality, fallback, fall forward XE3314B at commands (continued)
xecom (9) XE3314B %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 initiates break on reliable link. n=0 purge buffers and immediately transmit break n=1 same as n=0 n=2 immediately transmit break n=3 same as n=1 n=4 transmit break in sequence w data n=5 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 ex- tended 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 a = modulation type 0 - v.21(300 bps) 1 - v.22 (1200 bps) 2 - v.22bis (2400 bps) 3 - v.23 (1200 bps half duplex) 9 - v.32 (9600 bps) 10 - v.32bis (14,400 bps) 11 - v.34bis (33,600 bps) 64 - bell 103 (300 bps) 69 - bell 212 (1200 bps) b = automoce selection 0 - automode disabled 1 - automode enabled c = minimum data rate in bps d = maximum data rate in bps XE3314B at commands (continued)
xecom (10) XE3314B s0 answer on nth ring: s0 sets the modem to auto- matically answer on the nth ring. setting s0 to 0 dis- ables automatic answer. range: 0 to 255 units rings default 0 s1 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 s2 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 (+) s3 carriage return character: s3 determines the ascii character to serve as a carriage return to termi- nate commands and modem responses. range: 0 to 127 units ascii character default 13 (carriage return) s4 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) s5 back space character: s5 defines the ascii char- acter used as a backspace to edit the command line. range: 0 to 32 units ascii character default 8 (back space) s6 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 s8 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 s9 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 s10 carrier off disconnect delay : s10 selects how long carrier must be lost before the modem discon- nects. 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 s11 tone dialing speed: s10 sets the duration and spac- ing of the dialing tones. s11 does not affect the pulse dialing rate. range: 50 to 255 units 1 millisecond default 95 s12 escape code guard timer: s12 sets the escape se- quence 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 XE3314B modem registers
xecom (11) XE3314B 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 s16 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 s18 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 s21 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 s23 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 XE3314B modem registers (continued)
xecom (12) XE3314B s27 general bit-mapped options: s27 reflects the state of several "at" commands. bit 0 1 3 0 0 0 = normal mode (at&q0) 101 = error control enabled (at&q5) 011 = direct mode (at&q6) bit 2, 4-5, 7 not used bit 6 0 = ccitt protocols (atb0) 1 = bell protocols (atb1) s28 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) s29 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 s30 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 s31 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 charac- ter to be sent as xon for in-band flow control. range: 0 to 255 units ascii character default 11 (vt) s33 xoff character: s32 determines the ascii char- acter to be recognized as xoff for in-band flow con- trol. range: 0 to 255 units ascii character default 19 (dc3) s36 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 s38 forced disconnect timer: s38 sets the delay be- tween 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 s39 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 XE3314B modem registers (continued)
xecom (13) XE3314B 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 s41 general bit-mapped options: s41 stores the con- dition 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 er- ror control. s46=136 no data compression s46=138 data compression selected default 138 s48 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 s86 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 s95 extended result codes: s95 permits the user to cus- tomize 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 XE3314B modem registers (continued)
xecom (14) XE3314B 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 - receive hdlc data 3 v.21 channel 2, 300 bps 24 v.27ter, 2400 bps 48 v.27ter, 4800 bps 72 v.29, 7200 bps 96 v.29, 9600 bps 97 v.17, 9600 bps 98 v.17 short train, 9600 bps 121 v.17, 12,000 bps 122 v.17 short train, 12,000 bps 145 v.17, 14,400 bps 146 v.17 short train, 14,400 bps at+frm - receive fax (see at+frh for "mod" values) at+frs - receive silence at+frtn - receive test data at+fth - transmit hdlc data (see at+frh for "mod" values) at+ftm - transmit fax (see at+frh for "mod" values) at+fts - transmit silence at+fttn - transmit test data XE3314B class 1 fax commands
xecom (15) XE3314B digits v erbose description 0 ok successfully executed command line 1 connect 300 bps connection 2 ring ring signal detected 3 no carrier carrier not detected/lost 4 error error in command line 5 connect 1200 1200 bps connection 6 no dial tone no dial tone detected 7 busy busy signal detected 8 no answer 5 second silence not detected 10 connect 2400 2400 bps connection 11 connect 4800 4800 bps connection 12 connect 9600 9600 bps connection 13 connect 7200 7200 bps connection 14 connect 12000 12,000 bps connection 15 connect 14400 14,400 bps connection 16 connect 19200 19,200 bps connection 17 connect 38400 38,400 bps connection 18 connect 57600 57,600 bps connection 19 connect 115200 115200 bps connection 22 connect 75tx/1200rx v.23 originate connection 23 connect 1200tx/75rx v.23 answer connection 33 fax fax connection 35 data data connection in fax mode 40 carrier 300 300 bps carrier received 44 carrier 1200/75 v.23 reverse channel carrier received 45 carrier 75/1200 v.23 forward channel carrier received 46 carrier 1200 1200 bps carrier received digits v erbose description 47 carrier 2400 2400 bps carrier received 48 carrier 4800 4800 bps carrier received 49 carrier 7200 7200 bps carrier received 50 carrier 9600 9600 bps carrier received 51 carrier 12000 12,000 bps carrier received 52 carrier 14400 14,400 bps carrier received 53 carrier 16800 16,800 bps carrier received 54 carrier 19200 19,200 bps carrier received 55 carrier 21600 21,600 bps carrier received 56 carrier 24000 24,000 bps carrier received 57 carrier 26400 26,400 bps carrier received 58 carrier 28800 28,800 bps carrier received 59 connect 16800 16,800 bps connection 61 connect 21600 21,600 bps connection 62 connect 24000 24,000 bps connection 63 connect 26400 26,400 bps connection 64 connect 28800 28,800 bps connection 66 compression: class 5 mnp5 data compression 67 compression: v.42bis v .42bis data compression 69 compression: none no data compression 76 protocol: none no error correction 77 protocol: lapm lapm error correction 80 protocol: alt mnp error correction 81 protocol: alt cellular mnp10 error correction +f4 +fcerror fax carrier error XE3314B result codes
xecom (16) XE3314B all equipment connected to the public telephone network in the united states must have fcc part 68 registration. part 68 registration certifies that the device will not cause harm to the telephone network. the XE3314B provides a user transferable fcc registration. this permits XE3314B customers to use our fcc registration number without submitting their systems for additional testing. call xecom technical support at 408- 945-6640 with any questions on whether your system qualifies to use xecom's fcc registration number. in your operating instructions you must provide certain infor- mation to the end user of the modem. the instructions should include most of the instructions shown below. only the information regarding the mounting of the device in the final assembly should be omitted. fcc instructions: t his product complies with part 68 of the fcc rules and regulations. on each device shipped, there is a label which contains, among other information, the fcc registration number and ringer equivalence number (ren) for this product. you must, upon request, provide this information to your telephone company. the mounting of this device in the final assembly must be made in such a manner as to preserve the high voltage protection between the tip/ring connection and the rest of the system. typically, this may be accomplished by maintaining a minimum spacing .100 mils between the tip/ring traces to the rj-11c jack and low voltage portion of the system. no additional circuitry may be attached between tip/ring and the telephone line connection, unless specifically allowed in the rules. the ren is useful to determine the quantity of devices you may connect to a telephone line and still have all of these devices ring when the number is called. in most, but not all areas, the sum of the rens of all devices connected to one line should not exceed five (5.0). to be certain of the number of devices you may connect to the line, as determined by the ren, you should contact the local telephone company to determine the maximum ren for your calling area. if your system causes harm to the telephone network, the telephone company may discontinue service temporarily. if possible, they will notify you in advance. if advance notifica- tion is not practical, you will be notified as soon as possible. your telephone company may make changes in its facilities, equipment, operations or procedures that could affect proper functioning of your equipment. if they do, you will be notified in advance to give you an opportunity to maintain uninter- rupted telephone service. if you experience trouble with this device, please contact xecom at (408) 945-6640 for assistance. the telephone company may ask you to disconnect this device from the network until the problem has been corrected or until you are sure that the device is not malfunctioning. the device may not be used on coin service lines provided by the telephone company (this does not apply to private coin telephone applications which use standard telephone lines). connection to party lines is subject to state tariffs. fcc labels: fcc rules also require a label which is visible from the outside of the equipment. the label should display xecom's name as holder of the fcc registration, the fcc registration number and ringer equivalence of the modem. this is the same information which appears on the top of each XE3314B module. fcc information
xecom XE3314B devices sold by xecom are covered by the warranty provisions appearing in its terms of sale only. xecom makes no war- ranty, express, statutory, implied, or by description regarding the information set forth herein, or regarding the freedom of t he described devices from patent infringement. xecom makes no warranty of merchantability or fitness for any purposes. xecom reserves the right to discontinue production and change specifications and prices at any time and without notice. this product is intended for use in normal commercial applications. applications requiring extended temperature range, un- usual environmental requirements, or high reliability applications, such as military, medical life-support or life-sustaining equipment, are specifically not recommended without additional processing and authorization by xecom for such application. xecom assumes no responsibility for the use of any circuitry other than circuitry embodied in a xecom product. no other cir- cuits, patents, or licenses are implied. xecom's products are not authorized for use as critical components in life support devices or systems. life support devices or systems are devices or systems which, (a) are intended for surgical implant into the body, or (b) sup- port or sustain life, and whose failure to perform, when properly used in accordance with instructions provided in the labeling , can be reasonably expected to result in significant injury to the user. a critical component is any component of a life support device or system whose failure to perform can be reasonably ex- pected to cause failure of the life support device or system, or to affect its safety or effectiveness. terms of sale life support policy copyright, xecom ? 2000 while xecom, inc. has made every effort to ensure that the information presented here is accurate, xecom will not be liable for any damages arising from errors or omission of fact. xecom reserves the right to modify specifications and/or prices without notice. product mentioned herein are used for identification purposes only and may be trademarks and/or registered trademarks of their respective companies. xecom incorporated 374 turquoise street, milpitas, ca 95035 ph:408-945-6640 fax:408-942-1346

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