Dedicated line delivery device
Introduction of major products of BuRim Co., Ltd.
Dedicated line delivery device
Introduction of major products of BuRim Co., Ltd.
BR-DM9600
BR-DM9600 is a device which detects line cutting or faulty in the main modem (Link A) in two analog private line modems, automatically backs them up and automatically switchovers to a reserve modem (Link B). In addition, the device is designed to generate LED and alarm sound in case of switching caused by line faulty to help equipment and line operators easily recognize them. Line switching can be manually made through operating a toggle switch according to users’ necessity. When troubles take place to Link B while doing backup or using the reserve modem (Link B), the reserve modem is automatically switched over to the main modem (Link A). This system operates regardless of the protocol which is being used and adopts four-wire full duplex-type modems. In addition, the power source was duplicated for safety of this equipment.
· Network Diagram
· Product Features
Synchronous data intelligent modems of 9600/7200/4800/2400
BPS using QAM / DPSK modulation systems
4-wire full duplex system and 2-wire half duplex system
using private lines
Adapt ITU-T V.29 (main 1), V.27 bis, V.26 and Chapter 2
Clause 2 Items 5.2, 6.2 and 7 of the Communication Ministry
modem standard specification
A function for measuring bit error rates using the 511 pattern
of ITU-T V.52 (show the number of errors on the LCD display)
A function about power-up self-tests and hardware tests
A function for protecting systems through using passwords
Write modem conditions and functions using letters or
numbers by 32-inch LCD displays
Show EIA connection conditions (using LCD)
System Clock: Internal, reception (loop), external
A function about visible and audible alarms, carrier loss
alarms, retraining alarms, receiving signal error probability
alarms, mutual connection circulation trouble alarms
Own automatic adaptive equalizers and fixed equalizers
for compensating for line features (group delay, amplitude
characteristics)
A function for measuring quality of communication lines
Choose a tree-system function using front panel LCD
A function about receiving carrier sound using speakers
A function for storing parameters using non-volatile
memory elements
A function about automatic retraining and train-on-data
Tests of remote bureau modems possible
· Specification
| Classification | Contents |
| Operation Type | 4-wire full duplex, 2-wire half duplex |
| Synchronization Method | Synchronous / asynchronous |
| Transmission Speed | 9600 / 7200 / 4800 / 2400 BPS |
| Transmission System | QAM 9600/7200/4800 BPS and DPSK 4800/2400 BPS |
| Modulation Ratio | 2400Baud : QAM (9600/7200/4800 BPS) 1600Baud : DPSK (4800 BPS) 1200Baud : DPSK (2400 BPS) |
| Carrier Frequency | QAM : 1700/1800 Hz ± 1 Hz DPSK : 1800 Hz ± 1 Hz |
| Transmission Output Level | -1 ~ -16dBm (1dB unit) |
| Transmissible Level | 0 ~ -43dBm |
| Line Impedance | 600 ohm balanced ± 20% |
| Terminal Interface | ITU-T V.24, V.28 or EIA RS-232D DB25 standard interface |
| Power Source Used | 110V~220V AC(Free Volt) (60Hz) dual structure |
| Energy Consumption | 25 Watt or less |
| External Dimension | 44.4(height) X 483(width) X 300(length) (mm) 1U shape |
BR-DM9600
BR-DM9600 is a device which detects line cutting or faulty in the main modem (Link A) in two analog private line modems, automatically backs them up and automatically switchovers to a reserve modem (Link B). In addition, the device is designed to generate LED and alarm sound in case of switching caused by line faulty to help equipment and line operators easily recognize them. Line switching can be manually made through operating a toggle switch according to users’ necessity. When troubles take place to Link B while doing backup or using the reserve modem (Link B), the reserve modem is automatically switched over to the main modem (Link A). This system operates regardless of the protocol which is being used and adopts four-wire full duplex-type modems. In addition, the power source was duplicated for safety of this equipment.
· Network Diagram
· Product Features
Synchronous data intelligent modems of 9600/7200/4800/2400
BPS using QAM / DPSK modulation systems
4-wire full duplex system and 2-wire half duplex system
using private lines
Adapt ITU-T V.29 (main 1), V.27 bis, V.26 and Chapter 2
Clause 2 Items 5.2, 6.2 and 7 of the Communication Ministry
modem standard specification
A function for measuring bit error rates using the 511 pattern
of ITU-T V.52 (show the number of errors on the LCD display)
A function about power-up self-tests and hardware tests
A function for protecting systems through using passwords
Write modem conditions and functions using letters or
numbers by 32-inch LCD displays
Show EIA connection conditions (using LCD)
System Clock: Internal, reception (loop), external
A function about visible and audible alarms, carrier loss
alarms, retraining alarms, receiving signal error probability
alarms, mutual connection circulation trouble alarms
Own automatic adaptive equalizers and fixed equalizers
for compensating for line features (group delay, amplitude
characteristics)
A function for measuring quality of communication lines
Choose a tree-system function using front panel LCD
A function about receiving carrier sound using speakers
A function for storing parameters using non-volatile
memory elements
A function about automatic retraining and train-on-data
Tests of remote bureau modems possible
· Specification
| Classification | Contents |
| Operation Type | 4-wire full duplex, 2-wire half duplex |
| Synchronization Method | Synchronous / asynchronous |
| Transmission Speed | 9600 / 7200 / 4800 / 2400 BPS |
| Transmission System | QAM 9600/7200/4800 BPS and DPSK 4800/2400 BPS |
| Modulation Ratio | 2400Baud : QAM (9600/7200/4800 BPS) 1600Baud : DPSK (4800 BPS) 1200Baud : DPSK (2400 BPS) |
| Carrier Frequency | QAM : 1700/1800 Hz ± 1 Hz DPSK : 1800 Hz ± 1 Hz |
| Transmission Output Level | -1 ~ -16dBm (1dB unit) |
| Transmissible Level | 0 ~ -43dBm |
| Line Impedance | 600 ohm balanced ± 20% |
| Terminal Interface | ITU-T V.24, V.28 or EIA RS-232D DB25 standard interface |
| Power Source Used | 110V~220V AC(Free Volt) (60Hz) dual structure |
| Energy Consumption | 25 Watt or less |
| External Dimension | 44.4(height) X 483(width) X 300(length) (mm) 1U shape |
