Micro Seven Inc. model LS15-1-ETS for developing caller-ID for European market

copyrights Micro Seven, Inc., 2010, 2011, 2012, 2013


The Caller-ID features of Micro Seven model LS15-1-ETS simulates caller-ID services with north American single and multiple data format messages (Bellcore mode) and ETS mode. A calling-line's 10 digit telephone number including an area code and name are transmitted along with date and time during the first silence period of the ringing cycle at a called line. Depending on a pre-programmed condition of a calling line, a privacy or out-of-area status code may be transmitted instead of a calling number and name. However, date and time information are always transmitted. The Caller-ID features provide testing and demonstration of various caller-ID displays or receivers without obtaining caller-ID services from public telephone companies.


The caller-ID information which consists of date, time, calling number (or privacy status or out-of-area status), name (optional), and call qualifier (long distance indication-optional) is transmitted only once during the silent period after the first ringing cycle. If the called line represents an off-hook condition (answers the call) during the first ringing cycle or the first silent period, the transmission of caller-ID information ends. A 10-digit telephone number, or privacy status or out-of-area status for each line, is programmable by dialing a special code. The date and time are programmable by dialing a special code also. To test caller-ID display devices continuously, LS15-1-ETS may be programmed to generate caller-ID data after every ringing period.


The single or multiple data message format may be selected by entering a special code. The multiple data message format provides name of caller in addition to date, time, directory number, and the long-distance call qualifier. LS15-1-ETS may also be programmed to transmit Visual Message Waiting Indicator messages without ring signal. The channel-seizure period and marking-period may also be programmed in LS15-1-ETS.








i Small, 4" x 1.75" x 7.5"
i For use for testing caller-ID for European and American standards
i Low cost, and portable
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 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 6 month warranty



Telephone numbers:

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.

Warning: Using secondary telephone number in a privacy mode is prohibited.

Please read section 4.3 Programming of Caller-ID Parameters for details.

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)


Simulated PBX Mode:

By dialing "9", dial tone returns when the Simulated PBX Mode was selected.

Dialing "0#252*004*" for Simulated PBX Mode with dual frequency call progress tone or

0#252*012* for Simulated PBX Mode with secondary call progress tone.

Note that the regular dialing methods work as well here. For example, if the secondary

dialing method with a telephone number of 3456789012and the PBX mode are enabled,

dialing of 3456789012 or 93456789012 would ring the other line. To return to non-PBX

mode, dial 0#252*000* with dual frequency call progress tone or dial 0#252*008* with

secondary call progress tone.


Line Characteristics:

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

of 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 of signals are 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.


Non-impairment mode:

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.

Ring Signal:

20 +/- 2% Hz sine wave. Normally 2 sec on 4 sec off with exception of distinctive ringing

features programmed.

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.


Distinctive ring signal features:

The following distinctive ringing pattern is enabled instead of standard 2 sec on/ 4 sec off

ringing pattern:

(a). Dialing 0 * 1 + (line number): 2 sec on/ 4 sec off (default condition)

(b). Dialing 0 * 2 + (line number): 0.8 sec on, 0.4 sec off, 0.8 sec on, 4 sec off

(c). Dialing 0 * 3 + (line number): 0.4 sec on, 0.2 sec off, 0.4 sec on, 0.2 sec off, 0.8 sec on,

4 sec off

(d). Dialing 0 * 4 + (line number): 0.3 sec on, 0.2 sec off, 1 sec on, 0.2 sec off, 0.3 sec on,

4 sec off


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: 350 Hz + 440 Hz, continuous unless programmed for stutter dial tone

Ring-back Tone: 440 Hz + 480 Hz, 2 sec ON/4 sec OFF.

Busy Tone: 480 Hz + 620 Hz, 0.5 sec ON/0.5 sec OFF.

Accuracy in frequency component: +/- 1%.


Secondary Call Progress Tones: (480 Hz +/- 1%)

Dialing 07 enables the secondary call progress tones. Instead of generating dual

frequency call progress tones, single-frequency tone of 480 Hz is produced with signal

power of 18.5 dBm. Dialing 07 switches back to the dual frequency call progress tones.


Stutter dial tone:

Dialing 046 enables stutter dial tone with three of 0.1 seconds on/off period following with

continuous dial tone.

Dialing 045 disables the stutter dial tone. It is a factory default condition.


Line Input Jacks: USOC-RJ11-C, standard modular phone jacks


Power Switch: on when the switch is pushed in, off when the switch is pushed out.


Hot Line Mode:

Dialing 06 enables the Hot Line mode, which calls the other line without dialing a number. To

return to non-hot-line mode, dial 06 during the first 0.5 seconds right after off-hook.


Network response delay:

Time delay between the end of dialing and ring-signal application is programmable by the

following dialing:

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: 117VAC +/- 5%, or 220VAC +/- 5%(for 220V unit)


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.


On-hook and off-hook (call-waiting caller-ID) caller-ID FSK Generation:

Single message and multiple message-format caller-ID FSK generations are supported.

Programming parameters includes telephone number, name, date and time, telephone

number length, name length, privacy/out-of-area, call qualifier on/off, visual message on/off,

marking period before FSK data, silence period after the first ring, continuous caller-ID

generation on/off, and wrong checksum generation on/off. No ring signal is

produced for the visual messages. It also includes an FSK data expansion capability of

caller-ID data.


Caller-ID Signals:

Signal power: -14dBm into 600 ohms

Dialing 048 repeats caller-ID sequences. Running control software, ls15ets.exe, is required to switch caller ID mode between Bellcore and ETS modes.


1. Bellcore mode: Frequencies: 1200Hz +/- 2 Hz, 2200Hz +/- 5Hz

2. ETS mode: Frequencies: 1300 Hz +/- 2 Hz, 2100Hz +/- 5Hz




The followng is a list of programmable parameters for LS15-1-ETS:

  1. Line impairment condition

(a). Ideal line condition

(b). 20 dB insertion loss and random noise

  1. Caller-ID generation
  2. Telephone number method for dialing and caller-ID
  3. Name for caller-ID
  4. Battery-feed voltage selection between 21 and 41 volt
  5. PBX mode
  6. Stutter-tone dial tone
  7. Hot-line mode
  8. Disconnect signal
  9. Network delay
  10. Multi-message or single message format
  11. Date and time for caller-ID
  12. Disabling ring signal



Made in U.S.A.

Micro Seven, Inc.

1095-K N.E. 25th Hillsboro, OR, U.S.A.

Home Page: www.microseveninc.com

Email: sales@microseveninc.com

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