 |
|
| If you can't view the Datasheet, Please click here to try to view without PDF Reader . |
|
|
|
| If you can't view the Datasheet, Please click here to try to view without PDF Reader . |
|
|
| Datasheet File OCR Text: |
| xecom (1) XE5692H XE5692H june 2006 half-size, low-cost global embedded modem description the xecom XE5692H is a complete, global modem in a compact, surface-mount module. it covers less than half the board space of the leading competitor and is less than half as thick as well. xecom includes user transferable fcc part 68 registration with every modem module. this allows the system designer to add a modem to a process control, remote monitoring, point-of-sale, or remote diagnostic system without part 68 certification. only xecom offers embedded modems in leadless, surface-mount form. as a result, the XE5692H is not only substantially smaller than the competition but the surface-mount package frees additional space on the bottom of the application board for routing traces or placing components. this space efficient design allows the development engineer greater flexibility in placement of the modem within the host system. features ? models: XE5692H: 0 to 70c operating temp XE5692H-itr: -40 to 85c operating temperature size: 1.6? x 0.8? x 0.152? data transfer at rates from 300 bps to 56 kbps control & configuration via at commands. 3.3 and 5 volt compatible serial interface v.42 error control and v.42bis data compression. shared line features prevent modem operation from interfering with voice communications. boot command automatically loads user defaults complete integrated daa. user transferrable fcc part 68 registration world-wide telephone networks compliance. ul60950 recognition low power operation, 3.3 volts, 100 milliwatts; rohs compliant XE5692H block diagram
xecom (2) XE5692H XE5692H mechanical specifications xecom (3) XE5692H x e5692h pin configuration pin name description 1 tip the ring and tip signals connect the modem to the telephone line. fcc part 68 rules require a 1500 volt isolation barrier between the telephone line and all other circuits. this isolation must be preserved throughout the system. the telephone company places a dc ?battery? voltage across tip and ring on public switched telephone lines. the XE5692H operates regardless of the polarity of this voltage. the ?battery? voltage drives up to 100 milliampere of dc loop current. ul60950 requires minimum creepage and clearances distances between the tip and ring and all other circuits. clearance is the shortest distance between conductive circuits; creepage is the distance between conductive points along the surface 2 ring the ring and tip signals connect the modem to the telephone line. fcc part 68 rules require a 1500 volt isolation barrier between the telephone line and all other circuits. this isolation must be preserved throughout the system. the telephone company places a dc ?battery? voltage across tip and ring on public switched telephone lines. the XE5692H operates regardless of the polarity of this voltage. the ?battery? voltage drives up to 100 milliampere of dc loop current. ul60950 requires minimum creepage and clearances distances between the tip and ring and all other circuits. clearance is the shortest distance between conductive circuits; creepage is the distance between conductive points along the surface. pin descriptions top view 1 2 3 4 5 6 7 8 17 16 15 14 13 12 11 10 9 tip ring /dsr /dcd /dtr /ri spkr gnd n/c n/c /rts vcc /int /cts /reset rxd txd xecom (4) XE5692H 3 /dsr /dsr is an active low output from the modem and is forced to the active condition. 4 /dcd /dcd is an active low output from the modem. an active /dcd indicates the presence of a valid carrier signal. the at&c command controls when the XE5692H asserts /dcd. 5 /dtr /dtr is an active low input to the modem. an active /dtr signals the terminal is available for communications. the at&d command determines how the modem interprets activity on /dtr. 6 /ri the /ri signal reports on the presence of an incoming ring signal. when a ring occurs across tip and ring, the /ri output goes low and toggles with the cadence of the ring signal. 7 spkr spkr provides a pulse width modulated version of the signal on tip and ring allowing connection of a speaker to the modem to monitor modem operations. the recommended speaker circuit is shown on page 9 of this data sheet. the signal on spkr is controlled by the atl and atm commands. 8 ground ground provides the reference voltage for all host interface signals. 9 /txd /txd provi des the path for transmitted data and modem commands to be passed from the host controller to the modem. 10 /rxd /rxd provides the path for received data and modem responses to be sent from the modem to the host controller. 11 /reset /reset is an active low input which initiates a modem hardware reset. /reset must be active for a minimum of 100 milliseconds for a proper modem reset sequence. no external reset is required; if none is used the reset signal should be left open. 12 /cts /cts is an active low output from the modem. when hardware flow control is set, the modem asserts /cts to indicate that it can accept data from the terminal equipment on /txd. 13 /int /int provides an active low hardware interrupt signal from the XE5692H. the operation of this interrupt pin is programmable using the modem?s register u70. 14 vcc vcc provides 3.3 volt power to the modem. 15 /rts /rts is an active low input to the modem. when hardware flow control is set, an active /rts indicates to the modem that the host has data to send. 16, 17 n/c these pins are provided only for mechnical stablity. these pins must remain unconnected. XE5692H pin descriptions (continued) pin name description xecom (5) XE5692H XE5692H recommending landing pattern pad dimension: oval 0.07? by 0.13? pad extension beyond pcb: 0.04? row center to row center: 0.74? xecom (6) XE5692H XE5692H electrical specifications vcc 3.13 3.3 3.47 volts icc 30 35 ma on line 5 ma sleep .14 ma power down ring voltage detected 26 150 vrms type b ringer ring frequency detected 15.3 68 hz t ype b ringer telephone loop current 10 40 100 ma line impedance 600 ohms data transmit level - 12.0 -9.0 dbm dtmf transmit level -2.5 0 dbm avg over 3 second interval voh 2.4 5.0 volts vol 0.4 volts vih 2.0 5.0 volts vil -0.3 0.8 v olts parameter min typ max units comments x e5692h absolute maximum ratings storage temperature -25 o c to +85 o c 1 maximum operating temperature range 0 o c to +70 o c vcc 3.6 volts 1 the XE5692H can be ordered with an operating temperature of -40 o c to +85 o c at extra cost. order XE5692H-itr to specify industrial temperature range (itr). xecom (7) XE5692H XE5692H surface-mount soldering instructions the XE5692H is subject to damage if over-exposed to heat during solder reflow operations. following the soldering instructions below will ensure that the process of soldering the module to the board does not damage the modem. maximum temperature 220 o c maximum time at 220 o c 20 seconds maximum time above eutectic (180 o c) 90 seconds maximum preheat dwell time 180 seconds maximum recommended solder temperature profile 220 o c 180 o c 150 o c -20 sec- ------------------------------180 sec max------------------------- max ----- 90 sec max ----- xecom (8) XE5692H XE5692H typical connection diagram notes: 1 capacitors, c1 and c2, may be required for emi filtering in your system. without these components you may experience unintended radiation when the telephone cable is attached. c1 and c2 are high- voltage capacitors. we recommend the novocap es2211n681k502nxtm . this 680 pfd, 5000 volt capacitor will direct the high frequency harmonics to the system ground. 2. f1 is a positive thermal coefficient (ptc) device which protects the modem from excessive current flow. these devices are required for your system to pass ul60950. fuses may be used in place of the ptc?s parts list for XE5692H typical connection diagram reference designation qty description c1, c2 2 cap. 680 pfd, y2 f1 1 ptc, tr600-150 xecom (9) XE5692H recommended spkrconnection the spkr output on the XE5692H provides a pulse width modulated version of the signal on tip and ring. this permits audio monitoring of modem operations through a connected speaker. the schematic below shows the recommended circuit for the audio monitor reference designation qty v alue c1, c3, c4 3 0.1 ufd, 16 v + 20% c2 1 820 pfd, 16v + 20% c5 1 100 ufd, 16v + 20% r1 1 47k, 1/10 w, + 5% r2 1 10k, 1/10 w, + 5% r3 1 140 ohm, 1/10 w, + 5% u1 1 lm386 xecom (10) XE5692H XE5692H shared line features the XE5692H can monitor telephone line conditions before, after and during calls. this allows the system to avoid conflicts with other equipment connected to the same telephone line. there are two line monitoring modes; connect detect and handset interrupt. connect detect: connect detect is active when the XE5692H is on-hook. with at%v2 selected the XE5692H verifies the availability of the telephone line by checking the dc loop voltage before going off- hook for dialing or answering a call. the nominal value of loop voltage is stored in register u85, typically 48 volts. the XE5692H can detect either the lack of an installed telephone line or that the connected line is in use. no line if the telephone line is disconnected from the modem, the voltage on tip and ring will be zero. if the modem reads a dc loop voltage of 3 volts or less, the modem will not go off-hook and will issue the ?no line? response. line in use if a telephone handset, fax machine or other piece of equipment connected to the telephone line is in use, the dc loop voltage will drop. typically the dc loop voltage will drop to around 10 volts while the telephone line is in use. if the modem sees a dc loop voltage between 3 volts and 85% of the nominal loop voltage (41 volts typical), the modem will not go off-hook but will transmit the ?line in use? response if neither the ?no line? or ?line ib use? conditions is true, the XE5692H goes off-hook and completes the original command. handset interrupt: the handset interrupt feature permits the modem to yield the telephone line to other equipment connected to the same line. this prevents the XE5692H from blocking outgoing emergency calls when the line is shared as in a residential application including set top boxes and automated meter readers. for handset interrupt the modem monitors the loop current while it is off-hook. the loop current will drop if a piece of equipment connected to the same telephone line goes off- hook. the handset interrupt function is controlled by registers u77 and u78. u78 defines when the handset interrupt is operable, and u77 allows the operator to configure the modem to disconnect immediately upon detecting another piece of equipment on the telephone line. u77: bit 11 of u77 sets the XE5692H to automatically disconnect any time another piece of equipment connects to the line while the modem is off-hook. this configuration is recommended when the modem will be sharing a line with a telephone handset as it provides the quickest access to the phone line for emergency calls. if u77 bit 11 is not set, then u70 bit 10 should be. u70 bit 10 causes the modem to provide an interrupt when the off- hook condition of the other equipment is detected. u78 bits 14 and 15 of u78 control when the handset interrupt will be active. if both bits are reset, handset interrupt is disabled. if only bit 14 is set, the modem monitors the line for a handset interrupt after dialing. if only bit 15 is set, the XE5692H activates handset interrupt when the timer set by bits 0 to 7 expires. bits 0-7 set this timer in 500 millisecond increments. if both bits 14 and 15 are set, the modem starts monitoring for a handset interrupt after the modem handshake is completed. xecom (11) XE5692H the XE5692H uses "at" commands for configuration and control. this section describes the at command format and lists the commands, registers and result codes. command mode: the XE5692H enters command mode on power-up, reset, a lost connection, or receipt of the escape code. in command mode the modem accepts commands from the host on transmit data. appropriate result codes are returned on received data. command line format at commands follow a strict format. each command line, except a/, begins with the prefix at. the "a" and "t" may be both upper case or both lower case but cannot be of different cases. the modem determines data rate of the host equipment by measuring the width of the incoming bits of the ?a? and ?t.? multiple commands may be combined into a single command line of up to 48 characters. commands are executed in the sequence they appear upon receipt of a carriage return. spaces inserted into the command line are not placed in the buffer. the command line can be edited with a backspace before it is executed. the backspace erases the previous character in the command line. register s5 allows the user to select a character other than backspace to edit the command line. XE5692H at commands if the command buffer overflows, the modem issues an "error" result code, and the command line is not executed. register s3 allows the user to select a character other than a carriage return to terminate the command line. re-execute last command - the a/ command causes the modem to re-execute the last command line. this is the only command which does not require the "at" prefix. omitted parameters - most commands include a parameter which determines how the functions will be set. when the command parameter is omitted from the command string, it is assumed to be a 0. escape characters - a 3 character escape sequence may be entered to switch the modem into command mode while on line. the escape character, set by register s2, must be entered 3 times in succession to execute the escape. an at command must then be entered within the period defined by s12 to enter command mode. the default escape sequence is "+++." result codes - the modem issues a result code after each action. result codes may be sent as full words, one or two digit numeric codes, or may be disabled all together. 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 (12) XE5692H XE5692H boot command the XE5692H allows a default command string to be automatically loaded into the modem on power-up or modem reset. a series of commands loads the default command string in hex form into the modem?s eeprom. the eeprom has 256 bytes available for command storage. the sequence to load the default commands into eeprom must begin with the boot command and end with a double carriage return. all commands are loaded into the eeprom in hex form beginning with address m0000. up to 8 addresses may be loaded with each command in the sequence. the following example uses a typical configuration for an embedded application. ate0 disables command echo; atq1 disabled modem responses, and ats0=1 sets the modem to automatically answer on the first ring. this sequence is loaded into the modem eeprom with the boot command using the command sequence below. this places the modem into the desired configuration each time power is applied or the modem is reset boot command sequence command description at:m0000,42,4f,4f,54,0d,41,54,45 load characters ?b,o,o,t, xecom (13) XE5692H XE5692H at commands &tn - modem test modes n=0 cancel test mode n=3 initiate analog loopback &z - sleep mode; wake on incoming ring %b - report blacklisted numbers %c - v.42bis data compression n=0 data compression disabled * n=1 bidirectional data compression enabled n=2 data compression transmit only n=3 data compression receive only %on -answer mode n=1 answer in answer mode * n=2 answer in originate mode %vn - shared line use n=0 no auto detection of local line status * n=2 check line voltage before going off-hook. ?no line? response if line is unavailable and ?line in use? if line is off hook. %$ - display current at% settings. \bn - character length n=0 6n1; 6 data bits, no parity, 1 stop bit n=1 7n1; 7 data bits, no parity, 1 stop bit n=2 7p1; 7 data bits, 1 stop bit, parity set by at\p command. n=3 8n1; 8 data bits, no parity, 1 stop bit, * n=5 8p1; 8 data bits, 1 stop bit, parity set by at\p command. n=6 8x1; 8 data bits, 1 stop bit, 1 escape bit enabling 9th bit escape mode. \nn - error control mode n=0 normal mode n=2 mnp required n=3 v.42 auto reliable mode * n=4 lapm required for connection n=5 v.42 or mnp required \pn - parity setting n=0 even parity selected * n=1 space parity selected n=2 odd parity selected n=3 mark parity selected vn - result codes - n=0 numeric result codes n=1 english word result codes* xn - result code set - n=0 responses 0-4 n=1 responses 0-5 & 10 n=2 responses 0-6 & 10 n=3 responses 0-5, 7 & 10 n=4 responses 0-8 & 10* n=5 all responses z - reset - &gn - maximum data rate selection n=3 1200 bps n=4 2400 bps n=5 4800 bps n=6 7200 bps n=7 9600 bps n=8 12,000 bps n=9 14,400 bps n=10 16,800 bps n=11 19,200 bps n=12 21,600 bps n=13 24,000 bps n=14 26,400 bps n=15 28,800 bps n=16 31,200 bps n=17 33,600 bps * &hn - protocol selection n=0 v.90 with auto fallback to 300 bps * n=1 v.90 with fallback to 28,800 bps n=2 v.34 with automatic fall back to 300 bps n=3 v.34 only (33,600 bps to 2400 bps) n=4 v.32bis w automatic fallback to 300 bps n=5 v.32bis only (14,400 to 4800 bps) n=6 v.22bis (2400 or 1200 bps) * n=7 v.22 (1200 bps) n=8 bell 212 (1200 bps) n=9 bell 103 (300 bps) n=10 v .21 (300 bps) n=11 v.23 (1200/75 bps) &$ - display current at& settings. xecom (14) XE5692H \qn - modem to dte flow control n=0 no flow control n=2 cts flow control only * n=3 rts/cts flow control n=4 xon/xoff flow control \tn -dte rate n=0 300 bps n=1 600 bps n=2 1200 bps n=3 2400 bps n=4 4800 bps n=5 7200 bps n=6 9600 bps n=7 12.0 kbps n=8 14.4 kbps n=9 19.2 kbps n=10 38.4 kbps n=11 57.6 kbps n=12 1 15.2 kbps n=13 230.4 kbps n=14 245.76 kbps n=15 307.2 kbps n=16 autobaud on at command * \vn - connect response n=0 issue connect and protocol responses * n=2 issue connect response only n=4 issue connect and protocol responses with both transmit and receive data rates. :i - read interrupts - reports the lower 8 bits of user register u70. reading the interrupts clears them and resets the /int pin. :m#### - load boot command to eeprom beginning at address ####. :r- read all user registers :rnn - read user register nn :unn,xxxx - write hex value xxxx to user register nn. write multiple user registers in a command line by addressing the first register in the sequence. remaining values load into the successive registers the format for loading multiple registers is at:unn, xxxx, yyyy, zzzz, ... xecom (15) XE5692H XE5692H at commands +ms - select modulation - at+ms sets the modulation and data rates to be supported by the modem. the command format is: at+ms=a, b, c, d, e, f xecom (16) XE5692H XE5692H register settings s6 dial tone wait time: s6 determines how long the modem waits for dial tone before dialing. the dial tone wait time cannot be set to less than two seconds. range: 0 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. range: 0 to 255 units seconds default 80 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: 0 to 255 units seconds default 2 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 disconnects. if s10 is smaller than s9 or s10 is set to 255, the modem will not disconnect on any loss of carrier. range: 1 to 255 units 0.1 seconds default 14 s12 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 and remains in data mode. range: 10 to 255 units 0.02 seconds default 50 s14 wait for dial tone delay: s14 determines how long the modem will wait for dial tone when the w dial modifier is used. range: 0 to 255 units seconds default 12 s24 sleep inactivity timer: s24 sets the length of inactivity before the modem enters sleep mode. zero disables sleep mode. range: 0 to 255 units: seconds default: 0 s30 disconnect inactivity timer: s30 sets how long the modem remains on line with no data flowing. zero disables the timer. range: 0-255 units: minutes default: 0 s38 hang up delay timer: s38 determines the maximum delay between receipt of the ath0 command and modem disconnect. . range: 0-255 units: seconds default: 20 s40 test data pattern: s40 sets the test pattern to be used by the at&t4 and at&t5 commands 0 = all spaces (0) 1 = a marks (1) 2 = random data xecom (17) XE5692H XE5692H register settings s41 v.34 symbol rate: s41 sets the v.34 test pattern symbol rate to be used by the at&t4 and at&t5 commands 0 2400 symbols/second 2400-21,600 bps 1 2743 symbols/second 4800-26,400 bps 2 2800 symbols/second 4800-26,400 bps 3 3000 symbols/second 4800-28,800 bps 4 3200 symbols/second 4800-31,200 bps 5 3429 symbols/second 4800-33,600 bps* s42 blacklisting - s42 controls the blacklisting in the XE5692H. blacklisting regulates how frequently the modem can unsuccessfully dial a number. an attempt to dial beyond the limit will result in receipt of the ?blacklisted? result code. s42 = 0 disabled s42 = 1 enabled default: 0 s43 dial attempts before blacklisting - s44 determines how many dial attempts will be allowed before blacklisting blocks a call range: 0-4 units: number of calls default: 4 s44 blacklisting timer - s44 sets the duration of the blacklisting period. range: 0-255 units: seconds default: 180 s50 minimum off-hook duration - s50 determines the minimum length of time the modem will remain off-hook. an attempt to drop the line before this timer expires, will be ignored by the modem. range: 0-255 units: seconds default: 3 xecom (18) XE5692H x e5692h user-registers the registers described below are controlled by the at:u command and read with the at:r command. the user registers that control the modem?s country configuration are described elsewhere in this data sheet. u65 modem power down: u65 permits the XE5692H to enter power down mode. the modem can only be awakened by applying an active reset signal to pin 4. at:u65,2008 - select powerdown mode u70 modem interrupt register: u70 allows selects the events that will activate the hardware interrupt line, pin 3. it also stores the interrupt status. the interrupts are cleared after this register is read. bit 15- hardware escape pin bit 14- reserved bit 13- enables on line escape sequence* bit 12- caller id activates interrupt bit 11 - overcurrent detect initaites interrupt bit 10- interrupt on handset interrupt* bit 9 - activate interrupt on ring detect* bit 8 - activate interrupt on carrier detect* bit 7 - reserved bit 6 - reserved bit 5 - reserved bit 4 - indicates caller id detected bit 3 - indicates overcurrent detection bit 2 - indicates handset interrupt bit 1 - indicates ring detection bit 0 - indicates carrier detected u77 auto disconnect on handset interrupt - u77 bit 11 allows the user to configure the XE5692H to automatically disconnect on a handset interrupt condition. bits 12-15 - reserved (bit 14 active) bit 11 - when set the modem automatically disconnects when on a handset interrupt condition. this bit is reset in the default state. bits 0-10 - reserved - (bits 2, 3, 4, and 5 are normally set.) u78 handset interrupt control - u78 controls when the handset interrupt functions will be active. bits 14 -15 - 00 - handset interrupt disabled* 01 - handset interrupt disabled during dialing 10 - handset interrupt disabled from start of dialing to expiration of handset interrupt timer set by bits 0 to 7 of this register 11 - handset interrupt disabled until modem negotiations are complete bits 8-13 - reserved bits 0-7 - sets handset interrupt timer in 500 millisecond increments. (default = 0) xecom (19) XE5692H XE5692H responses digits v erbose description 0 ok command successful 1 connect 300 bps or higher connection 2 ring ring signal detected 3 no carrier carrier not detected 4 error error in command line 5 connect 1200 1200 bps connection 6 no dial tone no dial tone detected 7 busy b usy signal detected 8 no answer remote does not answer 9 ringing ringback signal detected 10 connect 2400 2400 bps connection 11 connect 4800 4800 bps connection 12 connect 9600 9600 bps connection 14 connect 19,200 19,200 bps connection 15 connect 7200 7200 bps connection 16 connect 12000 12,000 bps connection 17 connect 14400 14,400 bps connection 18 connect 16800 16,800 bps connection 19 connect 21600 21,600 bps connection 20 connect 24000 24,000 bps connection 21 connect 26400 26,400 bps connection 22 connect 28,800 28,800 bps connection 23 connect 31200 31200 bps connection 24 connect 33600 33,600 bps connection 30 cidm caller id detected 31 flash hookswitch flash detected 32 stas uk caller id alert detected 33 x over current condition 40 blacklist full the buffer for storing blacklisted numbers is full 41 blacklisted attempted number is blacklisted 42 no line no telephone line is connected to the modem 43 line in use the attached telephone line is in use 52 connect 56000 56,000 bps connection 60 connect 32000 32,000 bps connection 61 connect 48000 48,000 bps connection xecom (20) XE5692H digits v erbose description 63 connect 28000 28,000 bps connection 64 connect 29333 29,333 bps connection 65 connect 30666 30,666 bps connection 66 connect 33333 33,333 bps connection 67 connect 34666 34,666 bps connection 68 connect 36000 36,000 bps connection 69 connect 37333 37,333 bps connection 70 protocol: none no link protocol negotiated 77 protocol v.42 v.42 error correction protocol negotiated 79 protocol v.42bis v.42bis data compression protocol negotiated 80 protocol: alternate, + class 2 mnp2 error correction negotiated 81 protocol: alternate, + class 3 mnp3 error correction negotiated 82 protocol: alternate, + class 4 mnp4 error correction negotiated 83 protocol: alternate, +class 5 mnp5 error correction negotiated 90 connect 38666 38,666 bps connection 91 connect 40000 40,000 bps connection 92 connect 41333 41,333 bps connection 93 connect 42666 42,666 bps connection 94 connect 44000 44,000 bps connection 95 connect 4533 45,333 bps connection 96 connect 45666 45,666 bps connection 97 connect 49333 49,333 bps connection 98 connect 50666 50,666 bps connection 99 connect 52000 52,000 bps connection 100 connect 53333 53,333 bps connection 101 connect 54666 54,666 bps connection 102 un-obtainable number dtmf dial attempt on pulse only line XE5692H responses xecom (21) XE5692H fcc instructions the XE5692H complies with part 68 of the fcc rules and regulations. with each device shipped, there is a label which contains the fcc registration number. the fcc registration number incorporates the model number, manufacturer identifier, product type identifier and ringer equivalence number (ren) for this product. you must, upon request, provide this information to your telephone company. the format of the fcc registration number is shown below. 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 you 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 notification 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 uninterrupted telephone service. if you experience trouble with this device, please contact xecom at (408) 945-6640 for information on obtaining service or repairs. 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. tbd xecom (22) XE5692H 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, unusual en- vironmental 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 l ife support policy copyright, xecom ? 2006 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:408-94 2-2200 fax:408-942-1346 e-mail: info@xecom.com |
Price & Availability of XE5692H
 |
|
|
|
|
All Rights Reserved © IC-ON-LINE 2003 - 2022 |
| [Add Bookmark] [Contact Us] [Link exchange] [Privacy policy] |
|
Mirror Sites : [www.datasheet.hk]
[www.maxim4u.com] [www.ic-on-line.cn]
[www.ic-on-line.com] [www.ic-on-line.net]
[www.alldatasheet.com.cn]
[www.gdcy.com]
[www.gdcy.net] |