Micro Seven Inc.® model LS15-N for developing caller-ID for Japanese market
copyrights Micro Seven, Inc.®, 2010, 2011, 2012, 2013
Micro Seven Model LS15-N, Telephone Line Simulator, provides simulated CO functions in Japan. The LS15-N contains unique call progress tones, 16Hz sine wave ring signal, programmable loop voltage, short primary or programmable secondary telephone number and caller-ID generation for NTT standards. The LS15-N also contains line-impairment mode with extra insertion losses and random noise added for long-distance telephone lines. The programmable parameters include caller’s telephone numbers, privacy/out-of-area, date and time, and battery voltage of 20 or 40V. All the programmable parameters are restored back after the power to LS15-N is turned. The LS15-N may also be operated by an external DC source with Car Battery Adapter. A carrying case, Car Battery Adapter, and 220V version of AC/DC adapter are available as options. The LS15-N is also equipped with a forced-disconnect feature where disconnect signals are sent to calling and called lines. The duration of disconnect signal is also programmable. Programmable network response delay simulates time delay after completion of dialing. Simulated PBX mode returns dial tone after dialing 9. The secondary call progress tone generates a single-frequency tone instead of dual-frequency call progress tone. RS232 serial interface option is included.
MICRO SEVEN-Model LS15-N, 2-line telephone line simulator with Japanese caller-ID standard
Small, 4" x 1.75" x 7.5"
i For use in Japan and USA
i Low cost, and portable
i DTMF or special rotary pulse dialing input
i Primary or secondary (programmable to 18 digit) telephone number
i 16Hz 75VRMS Sine-wave ring signal, 1 sec on/2 sec off
i Compatible with NTT Number Display receivers
i RS232C interface to program telephone numbers and caller-ID parameters
i RS232C interface to program free format for any caller-ID requirement or DID function
i Unique call progress tones in Japan
i AC power input for 100-120VAC, 50-60Hz
i Programmable battery-feed between 21 and 40V @25mA loop current
i International power supply adapter for four different power plugs and 90-250VAC operation is available as an option
i Polarity reverse for calling and called lines
i 6 month warranty
1. Primary telephone number: selected by dialing 043 or line1 or 2 as a factory default.
2. Secondary telephone number: selected by dialing 044.
A secondary telephone number is same as a calling number in caller-ID.
DTMF dialing signal power: -13dBm to +5dBm per a frequency with no more than 4dB
difference between frequencies.
DTMF dialing detection time: 45 ms
Pulse dialing: Break period: 45 to 75 ms (60 ms nominal)
Make period: 30 to 60 ms (40 ms nominal)
Input impedance at 1 k Hz: 600 ohms +/- 5%
Signal Bandwidth: 150 HZ to 3.5 k HZ
Line Impairment Mode:
When a number of 00 and line-number is dialed, line impairment circuit with additional 20dB- insertion loss and -55dBm of random noise are added to signals between line 1 and 2.
Random noise amplitude is also programmable. Frequency attenuation characteristics and
Envelope-delay distortion is not affected.
Random noise amplitude programming:
The random noise amplitude is set at –55 dBm as a factory default value, but it may be
changed by the above dialing method. The factory default value is obtained with nnn=011.
The smaller number, the lower signal power.
i.e. nnn=176 for –31 dBm, nnn=088 for -37 dBm, nnn=044 for -43 dBm,
nnn=022 for -49 dBm, nnn=005 for -61 dBm , nnn=000 for -67 dBm of random noise.
When a number of 09 and a line number is dialed, the insertion loss between
lines becomes only 1 dB, and the random noise is removed. This is the factory default
Battery-feed voltage (loop voltage):
Selection between -20 or -40 volts:
1. -20 volts mode is selected by dialing 041, and it is a factory default condition.
2. -40 volts mode is selected by dialing 042. The battery-feed voltage is changed to -20 volt
mode when called line is ringing or in its off-hook state (answered). When the called line
hangs up the line, the battery-feed voltage is returned to -40 volts.
16 +/- 2% Hz sine wave. Normally 2 sec on 4 sec off with frequency programmable by using control software.
Amplitude: 67V RMS into open circuit. It is 66 V RMS into RN=0.1, 56 V RMS into RN=0.5,
48V RMS into RN=1, and 40V RMS into RN=1.7.
According to the FCC-part 68 rule, the RN=7000/(equivalent resistive value in ohms)
for ring signal of 20Hz +/- 3%.
The ring signal at a called line is disabled by dialing *0. To enable back to ringing at a called
line, dial *0 again.
Off-hook impedance requirement: 400 ohms maximum DC, 600 ohms nominal AC
Call Progress Tones:
Standard dual-frequency call progress tones: nominal -16 dBm.
Dial Tone: 400Hz
Ring-back Tone: 400Hz modulated by 20Hz, 1 sec ON/2 sec OFF.
Busy Tone: 400, 0.5 sec ON/0.5 sec OFF.
Accuracy in frequency component: +/- 1%.
Line Input Jacks: USOC-RJ11-C, standard modular phone jacks on front panels for line 1 and 2. Another standard modular phone jack on rear panel for polarity reverse operation for line 2.
Caller-ID generation are available at both lines 1 and 2. Polarity reverse operation that flips polarities of Tip and Ring connectors is available for line 2 at another telephone connector at rear panel.
Power Switch: on when the switch is pushed in, off when the switch is pushed out.
Polarity reverse: polarity reverse function is only available at Line 2.
Network response delay:
Time delay between the end of dialing and ring-signal application is programmable by the
0#170*nnn*, where nnn is a 3-digit decimal number between 1 and 255. The time delay is
determined by 8.6 ms x (nnn-1). The number, nnn, should not be zero.
The factory default is 0 seconds.
Forced called-party disconnect:
When two lines are connected and one line hangs up, disconnect signal is generated to both
Programmable disconnect signal:
The disconnect signal, which is interruption of loop current at the end of call when one line
hangs up is programmable by the following dialing:
0#169*nnn*, where nnn is a 3-digit decimal number between 1 and 255. The time delay is
determined by 8.6 ms x (nnn). The number, nnn, should not be zero.
The factory default is 320 ms.
AC/DC Adapter: 100-135VAC or 90-250VAC for International AC/DC Power Adapter option
AC/DC Adapter or Car Battery Adapter input (also as a battery charger): 12VDC
unregulated, 800mA maximum
Line Status Display: red LED for each line to indicate off-hook status (continuous on)
or ringing status (blinking)
Calibration: not required
Power On Indicator: green LED display on front panel
Dimensions: 19 cm (4") W x 4.5 cm (1.75") H x 10 cm (7.5") L
Weight: 500g (1.1 lbs.)
Environmental: Operating temperature: 0 to 35 degree C, Humidity: 85% RH at 35 degree C
Warranty/Service: 6 months limited warranty. No warranty if any factory seal is broken.
Service is performed at the factory, usually within 5 working days.
Signal power: -14dBm into 600
NTT Number Display mode.
Programmable parameters for caller-ID:
01 + Date + Time, i.e. 0106011230 for 12:30 A.M., June1.
02 + (line number) + (telephone number), i.e. 0225035551212 to assign 5035551212 for
line 2. The programmed number is the same as the secondary telephone number.
A caller-ID display with a re-dial feature can dial a calling line.
02 + (line number) + *, to assign private status.
Caution: The caller-ID number, which is secondary telephone number, will be destroyed by
setting privacy mode; therefore, the caller-ID number must be reprogrammed again.
02 + (line number) + #, to assign out-of-area status.
Caution: The caller-ID number, which is secondary telephone number, will be destroyed by
this action; therefore, the caller-ID number must be reprogrammed again.
Telephone number digit: 0 # 1 7 8 * n n n *, where nnn forms a 3-digit decimal number.
The default value is 10 digit. The maximum number is 18.
The restoration of memory to the following factory standard is done by dialing 04#:
-Select primary (short) dialing method.
-Battery-feed voltage of -40V
-No line impairment mode is selected.
-The random noise amplitude is set at -55dBm for the line impairment mode.
-The programmable telephone number and caller-ID telephone numbers if enabled, are set
as the following ten digits: line 1: 1234567890, and line 2: 2345678901
-The time and date are set as 12:30 p.m., January 1.
-No network response delay
-Disconnect signal of 320 ms
Options and Accessories:
Car Battery Adapter
International AC/DC Power Adapter Option for 90-250V power input with four different power plugs (US, UK, Australian, and European) (117V input unit is a standard.)
The following is a list of programmable parameters for LS15N:
(a). Ideal line condition
(b). 20 dB insertion loss and random noise
Made in U.S.A.
Micro Seven, Inc. ®
1095-K N.E. 25th Hillsboro, OR, U.S.A.
Home Page: www.microseveninc.com