E1 Interface at 2048 Kbps
|
Number of Interfaces |
16, E1
Interfaces,
8 - Input (RJ-45),
8 - Output (RJ-45) |
| Line
Rate |
E1 -
2.048 Mbps |
| Line
Code |
HDB3 as
per ITU-T G.703, G.704 |
|
Framing Format |
As per
ITU-T G.704:
FAS, FAS + CRC-4, CAS, or CAS + CRC-4 |
|
Facility Protection |
Metallic bypass relays for failsafe operation in the event of power
supply failure |
| PCM
Encoding |
Law A
Law as per ITU-T G.711 |
|
Signaling Protocols |
Pass-Through: Signaling protocols supported:
- 30B+D PRI ISDN (Euro ISDN) Signaling
- 31B (31 voice channels) with out-of-band Signaling
- SS7 Signaling (on any user selected time-slot)
- R2 CAS Signaling
- CAS, C5, CCS, Q50 (AB/CD)
- C7, PRI ISDN (30B+D)
- All Signaling options are User Selectable / User Programmable
|
| 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 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 |
Power Supply Specifications
| Input DC
Voltage |
- 48V DC
(nominal) |
| Range of
Input Voltage |
- 40V to
-60V DC |
| Output
Voltage |
+ 3.3V |
| Maximum Full
Load Output Current |
4A at +3.3V |
| Input
Voltage Reversal Protection |
Provided in
the Card |
| Over Current
Protection |
> 4A for
+3.3V |
|
Short Circuit Protection
|
Current
limit - 4A.
Recovers on removal of short |
| Under
Voltage |
< 2.9V |
| Over Voltage |
3.7V |
| Efficiency
at full load |
>86% |
| Ripple at
full load |
<5mVrms |
| Spike at
full load |
<50mV |
Echo Cancellation
|
Echo Tail Cancellation |
Up to 128ms. Bi-directional (near-end and far-end) |
|
Tone Disabler |
As per ITU-T G.164, G.165 |
|
ERLE (Echo Return Loss Enhancement) |
>35 dB (with 6dB ERL) at - 10 dBm0
>65 dB 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 |
|
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
-
LEDs for power on/off
|
|
Environmental |
Operational 00
C to 500 C |
|
Humidity |
5% to 95%, non-condensing |
|
Voice Quality |
- Acoustic Echo Control (AEC)
- Adaptive Noise Reduction (ANR)
- Adapting Listener Enhancement (ALE)
- Automatic Level Control (ALC) G.169
|
Management Port Specifications
10BaseT LAN Management Port (with Telnet)
| Network Interface |
RJ-45 Ethernet 10BaseT
or 100 BaseT-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 |
| EMI Compliance |
- Radiated & conducted emissions - complies with Class B limits of
EN55022:1998
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
|
Ordering Information
|
Sr. # |
Product Description |
Part # |
| 1 |
VCL ECTM
8 x VQE & E1 Echo Cancellers Per Chassis |
VCL-EC-E1-8 |
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Technical specifications are subject to change without
notice.
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