VCL-DX,
Technical Specifications
E1
Interface (Main Link)
| Number of Interfaces |
2 |
| Conformity
(Electrical) |
G.703 |
| Frame Structure |
As per ITU (CCITT)
G.704 |
| Signaling |
Channel Associated
Signaling |
| PCM Sampling Rate |
8000 Samples / sec |
| Encoding
Law |
A Law as per ITU
(CCITT) |
| Bit Rate |
2048 Kbps ± 50 ppm |
| Code |
HDB3 |
| Nominal Impedance |
120 W balanced / 75 W unbalanced (75 W
option) |
Peak Voltage of a mark
For 120 W Balanced interface
75 W Unbalanced interface |
3.0 V ± 0.3 V
2.37 V ± 0.237 V |
Peak Voltage of a
space
for 120 W Balanced interface
75 W Unbalanced interface |
0V ± 0.237 V
0 V ± 0.3 V |
| Nominal Pulse Width |
244 ns |
| Pulse Mask |
as per ITU (CCITT)
Rec. G.703 |
| Output Jitter |
< 0.05 UI (in the
frequency range of 20Hz to 100 KHz) |
| Permissible
Attenuation |
6 dB at 1 MHz |
Return Loss at:
51.2 KHz to 102.4 Khz
102.4 KHz to 2048KHz
2048KHz to 3072 Khz |
> 12dB
> 18dB
> 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 |
High Speed
Synchronous
"n X 64" Data Interface Type: V.35
| Interface |
V.35 |
| Number of Interfaces per Card |
1, ("N" X 64 Kbits / sec.
per Card) |
| Maximum Number |
("N" X 64 Kbits / sec.
Interface maximum value of "N"=31) - User Selectable |
| Conformity |
V.35 |
| Mode |
Synchronous |
| Bit
Rate |
64Kbps to 1984 Kbps |
| User Interface |
DCE |
High Speed
Synchronous
"n X 64" Data Interface Type: V.36
| Interface |
V.36 |
| Number of Interfaces per Card |
1, ("N" X 64 Kbits / sec.
per Card) |
| Bandwidth |
("N" X 64 Kbits / sec.
Interface maximum value of "N"=31) - User Selectable |
| Conformity |
V.36 |
| Mode |
Synchronous |
| Bit
Rate |
64Kbps to 1984 Kbps |
| User Interface |
DCE |
High Speed
Synchronous
"n X 64" Data Interface Type: X.21
| Interface |
X.21 |
| Number of Interfaces per Card |
1, ("N" X 64 Kbits / sec.
per Card) |
| Bandwidth |
("N" X 64 Kbits / sec.
Interface maximum value of "N"=31) - User Selectable |
| Conformity |
X.21 |
| Mode |
Synchronous |
| Bit
Rate |
64Kbps to 1984 Kbps |
| User Interface |
DCE |
High Speed
Synchronous
"n X 64" Data Interface Type: RS530
| Interface |
RS530 |
| Number of Interfaces per Card |
1, ("N" X 64 Kbits / sec.
per Card) |
| Bandwidth |
("N" X 64 Kbits / sec.
Interface maximum value of "N"=31) - User Selectable |
| Conformity |
RS530 |
| Mode |
Synchronous |
| Bit
Rate |
64Kbps to 1984 Kbps |
| User Interface |
DCE |
High Speed
Synchronous
"n X 64" Data Interface Type: 10BaseT Ethernet
Router
| Interface |
10BaseT
(Router) |
| Number of
Interfaces per Card |
1,
("N" X 64 Kbits / sec. per Card) |
| Bandwidth |
("N"
X 64 Kbits / sec. Interface maximum value of "N"=31) - User Selectable |
| IP routing |
RIP-I,
RIP-II, static routing, IP filters, BootP client and relay, DHCP relay |
| IPQoS |
Bandwidth
management (CBR, VBR), Priortization (6 levels), RTP auto detection, DiffServ/TOS support |
| Bandwidth
Optimization |
SW
Compression (optional), MLPPP and Bandwidth on Demand, Connection on Demand and IPX
spoofing |
| Interoperability |
PPP |
| Supported
RFCs |
1058,
1213, 1315, 1332, 1334, 1389, 1471, 1472, 1473, 1474, 1490, 1493, 1519, 1542, 1573, 1604,
1631, 1638, 1661, 1662, 1722, 1723, 1724, 1812, 1850, 1962, 1974, 1990 |
High Speed
Synchronous
"n X 64" Data Interface Type: G.SHDSL
| Interface |
G.SHDSL |
| Number of Interfaces per Card |
1, ("N" X 64 Kbits / sec.
per Card) |
| Bandwidth |
("N" X 64 Kbits / sec.
Interface maximum value of "N"=31) - User Selectable |
| Compliance |
ITU G.SHDSL (ITU-T / G.991.2) ETSI
SDSL (ETSI TS 101 524) |
| Handshake |
ITU G.hs (ITU-T G.994.1) |
| Mode |
Synchronous |
| Bit
Rate |
64Kbps to 1984 Kbps (User
Selectable) |
| User Interface |
LTU |
Protection
Central Office Terminal and Remote Terminal are protected
against power surges and transients occurring from lightning and electric induction as per
CCITT Rec. Table I/K-20 towards line side.
Clock
| Timing Options |
Internal Clock, Loop
Timed Clock |
| Synchronization
Sources |
Internal Clock,
External Clock, timing derive
from incoming HDB3 links (Loop Timed) |
| Default
Option |
Internal Clock |
Management
Interface
Local Management Interface
RS232, operating @ 9.6 Kbps CLI (text) based Interface, Hyper Terminal (VT-100 Emulation).
In-band Management Interface for Remote Terminals
RS232, operating @ 9.6 Kbps CLI (text) based Interface, Hyper Terminal (VT-100 Emulation).
Out-of-Band Management Interface - Optional
10 / 100 BaseT - User Assigned IP Address
Environmental
| Temperature and Humidity |
0°C to + 50°C, 90% R.H. (Non Condensing) |
| Altitude |
upto 9,000 feet |
Power Supply
| Input DC voltage |
-48V DC ( nominal ) |
| Range of input |
-40V to -60V DC |
| Output voltage |
+5V, -5V, filtered -48V ( for term. cards) |
| Full Load Output Current |
8A at +5V, 0.5A at -5V |
| Input Voltage Reversal Protection |
Provided in the Card |
| Over Current Protection |
10A for +5V, 0.5A for -5V |
| Short Circuit Protection |
Current limit - 6A. Recovers on removal of short |
| Efficiency at full load
|
>86% |
| Ripple at full load
|
<5mVrms |
| Spike at full load |
<50mV |
| Power Consumption |
50W (Worst - Case) - all data circuits active. |
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Technical specifications are subject to
change without notice.
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owners. |
