|
Provides voice echo cancellation of up to 64ms / 128ms, User
Selectable. |
|
Meets
ITU-T G.164 and G.165 and G.168 recommendations. |
|
Non-Linear Processor with Comfort Noise Insertion. |
|
Redundant Power Supply (Optional). |
|
E1
Circuit by-pass in the even of power supply failure. |
|
Fully
integrated independent 30-channel voice echo canceller. |
|
Supports Signaling: 30B+D PRI ISDN (Euro ISDN) , 31B (31 voice
channels) with out-of-band, R2 CAS, SS7 - User Selectable. |
|
 |
E1 Interface at
2048 Kbps
Network Interface
|
Number of Interfaces |
2,
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 (CCITT)
G.704 |
|
PCM Encoding
Law |
A-Law as per
ITU-T G.711 |
|
Signaling |
Pass-Through
Signaling protocol supported:
-
30B+D PRI ISDN (Euro ISDN) signaling
-
31B
(31 voice channels) with out-of-band signaling
-
R2
CAS Signaling
-
SS7
signaling (on any user selected time-slot)
-
All
signaling options are USER SELECTABLE / USER CONFIGURABLE
|
|
PCM Sampling Rate |
8000 Samples/sec. |
|
Bit Rate
|
2048 Kbps ± 50
ppm |
|
Jitter
Tolerance |
As per ITU-T G.823 |
|
Output
Jitter |
< 0.05 UI (in
the frequency of range of 20Hz to 100Khz) |
|
Nominal Line
Impedance |
120 W balanced
RJ-45 |
|
Peak Voltage
of a mark For 120 W Balanced interface |
3.0 V ± 0.3 V |
|
Peak Voltage
of a space for 120 W Balanced interface |
0
V ± 0.3 V |
|
Nominal Pulse
Width |
244 ns |
|
Pulse Mask |
as per ITU (CCITT)
Rec. G.703 |
|
Permissible
Attenuation |
6 dB at 1 MHz |
|
Return Loss at:
|
|
51.2 KHz to
102.4 Khz |
> 12dB |
|
102.4 KHz to
2048KHz |
> 18dB |
|
2048KHz to
3072 Khz |
> 14dB |
|
Jitter
Tolerance |
As per ITU (CCITT)
G.823 |
|
Loss and
recovery of frame alignment : |
As
per clause 3 of ITU (CCITT) G.732 |
|
Loss and
recovery of multiframe alignment : |
As per clause 5.2 of ITU (CCITT) G.732 |
Power
Supply Specifications
| Input DC Voltage |
-48V DC (nominal) |
| Range of Input Voltage |
-40V to -60VDC |
| Output Voltage |
+5V |
| Maximum Full Load Output Current |
10A at +5V |
| Input Voltage Reversal Protection |
Provided in the Card |
| Over Current Protection |
> 10A for +5V |
| Short Circuit Protection |
Current limit - 10A. Recovers on
removal of short |
| Under Voltage |
< 4.5V |
| Over Voltage |
5.4V |
| Efficiency at full load |
>86% |
| Ripple at full load |
<5mVrms |
| Spike at full load |
<50mV |
Management Port Specifications RS232 COM Port
Serial Port: 9.6Kbps (Async). ASCII /
VT100 / HyperTerminal.
10BaseT Ethernet: Telnet
Power Consumption of E1 Echo Cancellers
|
Card in Use |
Current (in Amps.) |
Power Consumption (in
Watts) |
|
Input
Voltage = - 48 Volt |
| 1 EC Card + PSU Card +
NMS Card |
0.15
|
6.0 |
| 10 EC Cards + PSU Card +
NMS Card |
0.825 |
39.6 |
Echo
Cancellation
|
Echo Tail
Cancellation |
Up to 64ms
Bi-directional / 128ms Uni-directional - User Selectable. |
| Tone Disabler |
As per ITU-T G.164,
G.165 |
|
ERLE (Echo
Return Loss Enhancement) |
>35dB (with 6dB ERL) at
10dBm0 input
>65dB with NLP enabled |
| ERL (Echo Return Loss) |
Selectable Levels
Options : 0, 3, 6 dB |
| Transmit / Receive
Levels (Programmable) |
Selectable
Levels Options: -12, -9, -6, -3, ,0 +3, +6, +9 |
| Comfort Noise Insertion |
User Selectable - Enable
/ Disable |
|
Local
Monitoring and Control |
RS232 serial interface
for Management through a PC COM Port |
|
Remote Monitoring and Control |
Ethernet (10BaseT)
interface for remote LAN Management and Control |
| Local and Remote
Provisioning |
CLI (text commands) and
GUI |
|
Front Panel
Indicators |
- In SYNC / Failure
- Individual Card
- LEDs for power on/off |
| Power Supply Redundancy |
Optional: -48VDC Power
Supply (1+1) |
|
Environmental-Operational |
0° C to 50° C |
| Humidity |
5% to 95%,
non-condensing |
Management Port
Specifications 10BaseT LAN Management Port (with Telnet)
|
Network Interface |
RJ-45 Ethernet 10BaseT
or 100BaseT-TX (auto sensing) |
|
Compatibility |
Ethernet Version 2.0
IEEE802.3 |
|
Protocols Supported |
ARP,
UDP/IP, TCP/IP, Telnet, ICMP, SNMP, DHCP, BOOTP, TFTP, Auto IP, SMTP
and HTTP |
|
LEDs |
10Base-T &
100Base-TX Activity, Full / half duplex. |
|
Management |
Serial
login, Telnet login, GUI (Graphical User Interface) |
|
EMI Compliance |
-
Radiated & conducted emissions - complies with Class B limits of
EN 55022:1998
-
Direct & Indirect ESD - complies with EN55024:1998
-
RF
Electromagnetic Field Immunity - complies with EN55024:1998
-
Electrical Fast Transient/Burst Immunity - complies with
EN55024:1998
-
Power Frequency Magnetic Field Immunity - complies with
EN55024:1998
-
RF
Common Mode Conducted Susceptibility - complies with EN55024:1998
|
Mechanical Specifications
|
Rack Mounting |
Standard 19 Inch. DIN Rack |
|
Height |
133.33 mm |
|
Depth |
292 mm |
|
Width |
482 mm |
|
Weight (Net) |
7.50 Kg. (10, Echo Cancellers) |
Echo Canceller
Technical Specification
- Provides voice echo cancellation of up to 64 /
128ms.
- Conforms to ITU-T G.165 and G.168
- G.164 / G.165 disable tone detection
- Non-Linear Processor with Comfort Noise
Insertion
-
Narrow-Band Detector
- Eliminates long echo tail.
Other Links:
VoIP SS7 and C7 Solution
E1 VOIP-GSM Gateway
GSM Gateways / GSM Channel Banks
Echo Cancellers
Digital Access Cross Connect Switch (DACS)
Groomers (Hi-Z Non-Instrusive Monitoring)
Multiplexers
Technical specifications are subject to change without
notice.
All brand names and trademarks are the property of their respective owners. |
