 Echo Canceller up to 10xE1
 IQCST provides robust and cost effective E1
echo canceller and voice quality enhancement solutions for the long distance,
wireline, wireless, (GSM, CDMA, TDMA), VoIP, satellite and radio communications.
Echo cancellers are offered to provide cancellation of 64ms/ 128ms
(user selectable) echo tails. The echo canceller equipment is compliant
to ITU-T G.164, G.165, G.168 (2000/ 2002) requirements for echo cancellation.
E1 Inputs and Outputs are balanced 120 Ohms, RJ-45.
The equipment offers RS232 serial interface for configuration through a PC COM Port,
and an Ethernet (10BaseT) interface for remote LAN configuration and monitoring
which allows the user to monitor and configure the equipment over a TCP-IP
network from anywhere in the world.
Technical Specifications
| Network Interface - single E1 unit |
| Number of Interfaces |
• 1 Input - RJ-45
• 1 Output - RJ-45
|
| Line Rate |
• E1 - 2 048 Mbps |
| Line Code |
• HDB3 as per ITU-T G.703, G.704 |
| Frame Structure |
• as per ITU-T G.704 |
| PCM Encoding |
• A-Law as per ITU-T G.711 |
| Signaling |
• 30B+D PRI ISDN (Euro ISDN)
Signalling
• 31B - 31 voice channels
with out-of-band Signaling
• R2 CAS Signalling
• SS7 Signaling (on any user selected
time-slot)
• All Signaling options are
user selectable/ user programmable
|
| PCM Sampling Rate |
• 8000 Samples/sek. |
| Jitter Tolerance |
• as per ITU-T G.832 |
| Output Jitter |
• < 0,05 UI (in the frequency range
of 20Hz ÷ 100kHz) |
| Nominal Line Impedance |
• 100 Ohm balanced RJ 45 |
| Echo Canceller - single E1 unit |
| Echo Tail cancellation |
• up to 64 ms Bidirectional
• up to 128 ms Unidirectional
|
| ERLE (Echo Return Loss Enhancement) |
• > 35dB (with 6dB ERL) at -10dBm0
• > 65dB with NLP enabled
|
ERL
(Echo Return Loss) |
• Selectable Threshold Levels Options:
0dB, 3dB, 6dB |
| Transmit/Receive Levels (Programmable) |
• Selectable Levels Options:
-12, -9, -6, -3, 0, +3, +6, +9 |
ERL
(Echo Return Loss) |
• Selectable Levels Options:
0dB, 3dB, 6dB |
| Monitoring and Control |
• Local - RS232 serial interface
• Remote - telnet over LAN/ TCP-IP link
(10/100BaseT)
|
| Local and Remote Provisioning |
• CLI (text commands) and GUI |
| Power Consumption |
| Input Voltage |
• - 48 VDC |
| Current |
• 0,15 A - with 1 E1 unit
• 0,825 A - with 10 E1 units
|
| Power Consumption |
• 6 W - with 1 E1 unit
• 39,6 W - with 10 E1 units
|
| Miscellaneous |
| Environmental-Operational |
• 0°C ÷ 50°C |
| Humidity |
• 5% ÷ 95%, non-condensing |
| Mechanical Specifications |
• width: 482 mm
• depth: 292 mm
• height: 133,33 mm
|
| Weight |
• 7,5 kg - with 10 E1 units |
* Informations on this site are based on producer's data.
|
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