Channel drop units and channel protection units
Descriptions
Channel drop units and channel protection units are installed in full-featured REG-F and are designed to connect external equipment with various interfaces.
CHANNEL DROP UNITS
Drop unit for three VF channels | V3-R |
Drop unit for two VF channels and one asynchronous RS-232/RS-485 channel | V2A1-R |
Drop unit for one VF channel and two asynchronous RS-232/RS-485 channel | V1A2-R |
Drop unit for two channels for connecting telephone subscribers | FXS2-R |
Drop unit for channel intervals of the digital E1 stream | G703-R |
E1/Ethernet Bridge | BS4E-3-R |
CHANNEL PROTECTION UNITS
Protection unit for three VF channels | V3-R-PI |
Protection unit for two VF channels and one asynchronous RS-232/RS-485 channel | V2A1-R-PI |
Protection unit for one VF channel and two asynchronous RS-232/RS-485 channel | V1A2-R-PI |
Protection unit for two channels for connecting telephone subscribers | FXS2-R-PI |
Protection unit for the channel interval dropping path of the digital E1 stream | G703-R-PI |
E1/Ethernet bridge protection unit | BS4E-3-R-PI |
Technical parameters
VF channel |
|
Input impedance |
600 Ohm |
Output impedance |
600 Ohm |
Input range |
-40 to +5 dB |
Input adjustment range |
45 dB |
Output level |
- 13 dB/+4 dB |
Bandwidth |
300 to 3400 Hz |
Total harmonic distortion |
maximum 0.5% |
Asynchronous channel |
|
Interface |
RS-232/RS-485 |
Data rate |
600 to 115 200 bps |
Transmission mode |
8-N-1 |
Transmission of flow control signals (for RS-232) |
RTS, CTS, DTR, DSR, DCD |
FXS channel |
|
Line voltage, minimum |
30 V |
Call voltage, minimum |
30 V |
Line current |
20 ±1 mA |
Tone level |
14 ±1 dB |
Generated signals |
As per GOST 10710-81 |
Е1 interface |
|
Transmission standard |
As per ITU-T G.703 |
Line code |
HDB3 |
Wave impedance |
120 Ohm |
Coding |
As per ITU-T G.704 |
Ethernet |
|
Number of ports |
4 |
Isolation voltage of a line transformer |
minimum 1500 V |
Modes |
Auto, 10HD, 10FD, 100HD, 100FD |
MAC address table of the network switch |
2048 entries |
Pair autocrossing |
Auto MDIX |