Micro Seven, model LS15-2 with TAP Interface

Updated: 3-2-08

 

As an original factory default condition, Micro Seven Model LS15-2 is set for TAP interface which inputs ASCII characters from PC and transmits caller-ID sequence at telephone connectors at the front panel. One of TAP interface is to display a room number in a nursing home as follows:

 

Here is an operating procedure for TAP interface:

 

  1. Connect a special cable provided between PC and LS15-2.
  2. Run Hyperterminal in your PC with 1200 baud setting.
  3. Connect a caller-ID receiver at either connector on the front panel of LS15-2.
  4. Type the following on PC:

<CR>ROOM 123<CR>

Note: <CR> is “Enter” on your keyboard.

The RED LED on the front panel blinks and the message “ROOM 123” is displayed on the caller-ID receiver. The date/time and telephone number are displayed as all ones.

  1. The type the following on “PC”

<CR>ROOM 123 ANSWD<CR>

The RED LED on the front panel blinks and the message “ROOM 123 ANSWD” is displayed on the caller-ID receiver.

The date/time and telephone number are displayed as all ones.

 

Detail Specifications

 

RS232C interface: 1200 baud, no parity, and 8-bit character with no handshake control required.

Battery-feed voltage (loop voltage): -20

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%.

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

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

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

Line Status Display: red LED to indicate ringing status (blinking)

Caller-ID in progress indicator: red LED

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 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, and name length.

Caller-ID Signals:

Note: European version is available as a custom option

Frequencies: 1200Hz +/- 2 Hz, 2200Hz +/- 5Hz
Signal power: -14dBm into 600 ohms

Caller-ID Sequence in Multiple Data Message Format

CID information is transmitted during the silence period after two-second ring signal as follows:
Receiving start command:
T0: ring signal for two seconds
T1: 500 ms of silence period, no carrier generated during this period
T2: Turning on carrier and data transmission of 30 each hex 55 (channel seizure period) for 260 ms
T3: Marking for 160 ms
T4: Message Type Word (1 byte), Hex 80, start computing checksum
T5: Message Length Word (1 byte)
Total byte count during T6, T7, and T8
T6A: Parameter Type Word (1 byte), Hex 01
T6B: Parameter Length Word (1 byte), Hex 08
T6C: Real time clock information (8 bytes long)
1st Byte: Month (10)
2nd Byte: Month (1)
3rd Byte: Day (10)
4th Byte: Day (1)
5th Byte: Hour (10) in 24 hour format
6th Byte: Hour (1) in 24 hour format
7th Byte: Minutes (10)
8th Byte: Minutes (1)
T7A: Parameter Type Word (1 byte), Hex 02
T7B: Parameter Length Word (1 byte), Hex 0A
T7C: 10 digit calling number in ASCII format
Area Code (3 digit) + Telephone Number (7 digit)
T8A: Parameter Type Word (1byte), Hex 07 for name delivery
T8B: Parameter Length Word (1 byte), Hex 0F
Note: The name length is variable between one and fifteen.
T8C: Fifteen ASCII characters
If the calling line is Line 1: ABCDEFGHIJKLMNO
If the calling line is Line 2: BCDEFGHIJKLMNOP
T10: Check Sum Byte The receiver adds all the data between T4 and T10 with the checksum
result should be zero.
T11: Turning off the carrier after 80 ms of marking
T12: LS15-2 is ready to accept a new start command

Micro Seven, Inc.
1095-K N.E. 25th Hillsboro, OR 97124 U.S.A.
phone: 503-693-6982, fax: 503-693-9742
email: sales@microseveninc.com
www.microseveninc.com