Network Interface
| Number of
Interfaces |
2, 1 - Input
(RJ-45), 1 - Output (RJ-45) |
| Line Rate |
T1 - 1.544
Mbps |
| Line Code |
B8ZS, AMI (User
Selectable) |
| Frame Structure |
D4, ESF (User
Selectable) |
| PCM Encoding |
µ
Law
as per ITU-T G.711 |
|
Signaling |
Pass-Through:
Signaling protocols supported:
- 24B (24 Voice Channels) with out-of-band signaling
- C7, SS7 Signaling on any user selected time slot
- 23B+D, PRI ISDN (23 Voice Channels+D Signaling
Channel)
- D4 Rabbed Bit Signaling
- All Signaling options are USER SELECTABLE
|
| PCM Sampling
Rate |
8000 Samples /
sec |
| Bit Rate |
1544 Kbps ± 50 ppm |
| Jitter Tolerance |
As per ITU-T
G.823 |
| Output Jitter |
< 0.05 UI (in
the frequency range of 20Hz to 100 Khz) |
| Nominal Line
Impedance |
120 Ohms
Balanced RJ 45 |
| Nominal Pulse
Width |
244 ns |
| Pulse Mask |
As per ITU (CCITT)
Rec. G.703 |
| 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 |
Echo Canceller
|
Echo Tail Cancellation |
Up
to 64ms. Bidirectional / 128ms. Unidirectional User
Selectable |
|
Tone Disabler |
As
per ITU-T G.164, G.165 |
|
ERLE (Echo
Return Loss Enhancement) |
>35dB (with 6dB
ERL) at -10dBm0
>65dB with NLP enabled |
|
ERL (Echo Return
Loss) |
Selectable
Threshold 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 |
|
Local and Remote Provisioning |
CLI
(text commands) and GUI |
|
Front Panel Indicators |
- In SYNC / Failure
- LEDs for power on / off |
|
Environmental-Operational |
00
C to 500 C |
|
Humidity |
5% to 95%, non-condensing |
Power Consumption of E1 Echo Canceller, 1U 19 inch Version
|
Input Voltage = - 48V DC |
Current (in Amps.) |
Power Consumption (in Watts) |
| 1
Unit |
0.15 |
6.0 |
Power Supply
Specifications
| Input DC Voltage |
- 48V DC (
nominal ) |
| Range of Input |
- 40V to -60V DC |
| Output Voltage |
+ 5V |
| Full Load Output
Current |
4A 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 to 5.6V |
| Efficiency at
full load |
>70% |
| Ripple at full
load |
<5mVrms |
| Spike at full
load |
<50mV |
Mechanical
Specifications
| Height |
44 mm |
| Depth |
260 mm |
| Width |
480 mm |
| Weight |
4 Kgs. |
Related Links
Others
Links
Technical specifications are subject to change without
notice.
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