Automatic Telephone-line Tester, model ST10-2
runs with or without PC

-Automatic testing of minimum one, maximum twenty telephone-lines

-Error LED and warning sound generated at internal speaker

-Programmable test interval

-Stand-alone or PC-assisted testing of phone lines

-Testing of incoming lines for fax machines or alarm receivers

Copyrights 2005 2006 Micro Seven, Inc.

Micro Seven model ST10-2, Automatic Telephone Line Tester, provides automatic testing of maximum twenty telephone lines by dialing each line for testing whether call to the line is answered or not. Test failure is indicated on ERROR LED and warning sound is generated at internal speaker. Failed line is reported to serial interface in PC. PC-assisted testing mode displays test result and a text file is generated as a disk file. Telephone numbers are stored in non-volatile memory in ST10-2, and test will start by itself when there is power failure. Internal audio monitor is provided to hear the test. The standard accessories of ST10-2include AC/DC adapter, serial port cable, control software, and operator’s manual. A carrying case, car-batttery adapter, or 230V AC/DC adapter is extra. The control software for programming ST10-2 and PC-assisted test is provided as a standard accessory.

Model ST10-2, Automatic Telephone-Line Tester


Testing parameters:

Dialing DTMF or rotary-pulse method:

DTMF: 0dBm nominal, 50ms on, 50ms pause between digit

Rotary-pulse: 60ms break period and 40ms make period

Call progress tone detection: -30dBm

Programmable parameters:

Note: programmed parameters are stored in ST10-2’s non-volatile memory.

Number of telephone numbers: 10-20 telephone numbers depending on telephone number length

Telephone number length: 10-16 digits long

Testing intervals: 10 sec to 10 minutes between test

Dialing telephone numbers: 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, *, #, (space for pause), "," (2.5 sec delay for PBX)

Receiver selection: fax machines or Contact ID alarm receivers

Alarm test message in Contact ID format: programmable

Error reporting:

When there is a testing error, Error indicator LED is turned on, and audio warning is generated at internal speaker in ST10-2. The line error is displayed on PC screen, and it is saved as a text file.

Front panel controls:

Power switch

Power indicator

Rear panel controls:

RJ11-C connector for telephone line.

power input, 12V input, 800 mA

RS232C connector, 9-pin D-sub, female

AC/DC Adapter supplied with CS10: 117VAC +/- 5%, or 220VAC +/- 5%(for 220V unit)

Dimensions: 19 cm (4") W x 4.5 cm (1.75") H x 10 cm (7.5") L

Weight: 750g (1.65 lbs.)

Environmental: Operating temperature with power on: 0 to 35 degree C, Humidity: 85% RH at 35 degree C, storage temperature and operating temperature without power on

Warranty Service: six months limited warranty. Service is performed at the factory, usually within 5 working days.

Options and Accessories:

Carrying case

Car Battery Adapter

USB adapter

230V input AC/DC Adapter (117V input unit is a standard.)

Control software: provided as a standard accessory



DTMF dialing signal power: 0 dBm total for two frequency components, 100 ms on, 100ms off


Pulse dialing: Break period: 60 ms, make period: 40 ms, inter-digit wait time: 1 sec


Alarm message signal power: -12 dBm (factory default), 0 dBm with Control Register bit 7 on


Alarm message DTMF tone timing: burst ON time: 50 ms (factory default), burst OFF time: 50 ms (factory default), programmable by DTMF register


Handshake tone and kiss-off tone signal detection: -26dBm minimum (factory default), -38dBm with x4 gain by Control Register bit 6 off


Audio monitor: monitoring receiving signal (handshake tone and kiss-off tone) and transmitted signal (dialing signal and alarm message), 0.1 watts maximum with internal speaker


RS232C interface: 1200 baud, no parity, and 8-bit character

ASCII commands without using provided control software:

Telephone number entry: W44 (n1) (n2) for setting up line number, then enter D<telephone number-maximum fifteen digits><CR> to program a telephone number.
for example W4400<CR>D5035551212<CR> for dialing 5035551212 for line 1. Note <CR> is a carriage return. It is stored in EEROM (non-volatile memory) in AP15.


Polling interval entry: M(n1) (n2) (data)<CR>


Continuous/Single polling mode


Alarm message entry: S<fifteen digit long alarm message><CR>
i.e. S123418313101015<CR>
Note: ST10-2 prepares check sums, so do not enter sixteen digits. When sixteen digit-long alarm message including check sum is entered, checksum, which is prepared by ST10-2, will become a wrong one. It is stored in EEROM (non-volatile memory).


Start alarm reporting: G
Start alarm reporting process by dialing the telephone number, receive handshake tones, transmit alarm messages, receive kiss-off tones and hang up the line. A carriage return is not needed.

Status messages from ST10-2 to PC for polling






Hang-up command or Abort command: A
Turn off off-hook relay or abort alarm reporting process. A carriage return is not needed.


Repeat alarm message command: B
It transmits alarm message when ST10-2 is off-hook condition. A carriage return is not needed.


Reading telephone-number command: T
ST10-2 transmits programmed telephone numbers to PC. A carriage return is not needed.


Reading alarm-message command: U
ST10-2 transmits programmed alarm message in sixteen digit-long including check sum to PC. A carriage return is not needed.


Discrete telephone line tester commands: (optional feature)

On-hook test: ASCII “O (oh)” for testing loop voltage of greater than 20 volts across Tip and Ring
 Result: messages back to PC, “Loop Voltage OK” or “No Loop Voltage”.

Off hook command: “F” for turning off-hook relay on.

Loop current test: ASCII “L”
 Result: messages back to PC, “Loop Current OK” or “No loop current”.

Dial tone test: ASCII “N”
 Result: messages back to PC, “Dial Tone OK” or “No Dial Tone”

Dialing: ASCII “P” for dialing a pre-programmed number.

Ring signal test: ASCII “R”
 Result: messages back to PC, “ Ring Signal OK” or “No Ring Signal”.

Hang-up command : ASCII “A”.

Computer requirement: Almost any PC with 500k bytes RAM

PHONE: 503-693-6982, FAX: 503-693-9742
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