Applications
- Telephone line recording and monitoring;
- Computer Telephony Integration;
- Multi-channel messaging systems;
- Frame Rrelay Virtual Private Networks;
- Signalling hardware platform;
- Telephone and data network multiplexing/demultiplexing
Description
This board is designed to work with E1/T1 trunks. It works in a Windows 2000/XP/2003 or Linux PC.
VOCORD 4E1 does signal coding/decoding and processing. It can be used in 2 main modes of operation:
- Low-impedance (line termination, port G.703) with the number of channels 1, 2, 3, 4, 5, 6, 7 or 8 per board;
- High-impedance (monitoring) with the number of channels 1, 2, 3 or 4 per board.
Technical Specifications
| Parameter | Value |
|---|---|
| Signal source | E1 trunk, symmetrical input 120 Ohm |
| E1/T1 Channel number (G.703 termination) | 1, 2, 3, 4, 5, 6, 7, 8 |
| E1/T1 Channel number (Monitoring) | 1, 2, 3, 4 |
| PC interface | PCI 2.3 33 MHz/32 bit |
| TDM interface | ECTF H.100 |
| On-board processing resources | 1 DSP 300/350 MHz, 48 KBytes Cache/SRAM, 256 KBytes L2 SRAM, 4 KBytes Scratch SRAM |
| Form factor | PCI Half-Size, 106x174 mm |
| Galvanic insulation between E1 inputs | > 1000 V |
| External interface | |
| Input signal | G.703, 2.048 MHz |
| Input impedance | 120 Ohm |
| Connector | 4 x RJ-45 UTP/FTP |
| DSP functionality | |
| DTMF detection | 240 (with HDLC off) |
| MFC R1/R2 channel detection | 240 (with HDLC off) |
| HDLC detection channels | 254 x DS0 (16.256 Mbps) (with DTMF, MFC off) |
| Audio recording channels (forward and reverse B-channel in stereo mode) | 120 (with HDLC or MFC on) |
| Ater channel recording | 1020 x 16 Kbps |
| Additional functionality | |
| LED G.703 channel status | Sync status, Carrier status |
| Power supply | |
| +3 VDC | < 3 A |
| +5 VDC, +12 VDC, -12 VDC | Not used |
| Environmental parameters | |
| Operation requirements | 0 to +60°С, 10 to 80% humidity without condensation |
| Storage requirements | 0 to +60°С, 10 to 80% humidity without condensation |
