|
DS3 (T3) Interface
| Number of DS3 Interfaces |
1 |
| Bit Rate |
44.736 Mbps |
| Bit Rate Tolerance |
±
20ppm |
| Line Code |
B3ZS |
| Framing |
* Meets ANSI T1.404
* M13 or C-bit parity |
| Pulse Shape |
Meets ANSI T1.102-1993
and Bellcore GR-499-CORE |
| Connectors |
BNC, Co-axial
Un-balanced |
| Impedance |
75 Ohms |
| Signal Level to
declare Loss of Signal condition |
≤
20mV |
| Signal Level to clear
Loss of Signal condition |
≥
90mV |
Power Supply Specifications
| Input DC Voltage |
-48V DC ( nominal ) |
| Range of Input Voltage |
-40V to -60V DC |
| Output Voltage |
+5V |
| Maximum Full Load Output |
10A at +5V |
| Current 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 |
Mechanical Specifications
| Rack Mounting |
Standard 19 Inch. DIN Rack |
| Height |
133.33 mm |
| Depth |
292 mm |
| Width |
482 mm |
| Weight |
7.50 Kg. |
Echo Cancellation
|
Echo Tail Cancellation |
Up to 128ms.
bidirectional (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)
Adaptive Listener Enhancement (ALE)
Automatic Level Control (ALC) G.169 |
| 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).
- Robbed Bit Signaling.
- All signaling options are USER SELECTABLE
|
Clock Synchronization
|
Internal |
AT&T
TR62411, Telcordia GR-1244-CORE, Stratum 3, Stratum 4, Enhanced and
Stratum 4, ETSI ETS 300 011, ITU-T G.813 Option 1 |
| Loop-Timed |
External 75 Ohms - 2.048 Mhz
External 75 Ohms
- 1.544 Mhz |
Management Port Specifications - RS232 COM Port
| Serial Port: 9.6Kbps (Async)
ASCII / VT100 / HyperTerminal. |
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
|
Power Consumption
Card in use
Input Voltage = -48 Volt |
Current (Amps.) |
Power Consumption (Watts) |
| Echo Canceller + Power Supply |
1.2A |
57.6 |
Ordering Information
|
Sr. # |
Product Description |
Part # |
|
1. |
VCL
EC-DS3, VQE and DS3 Echo Cancellers,
One DS3 128ms bidirectional Echo Canceller Per Chassis. |
VCL-EC-DS3 |
Related Links
Others Links
Technical specifications are subject to change without
notice.
All brand names and trademarks are the property of their respective owners. |
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