|
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 |
2 Wire / 4 Wire - Voice Frequency
Interface(s)
|
Number of Channels per Card |
2 |
|
Interface Type |
FXO, FXS, 2W / 4W E&M |
|
Maximum Number of Channels |
30 |
|
Transmission performance |
Fully Compliant to ITU (CCITT)
G.712 specification |
|
Line Impedance
|
600
W (900
W optional) |
|
Voice Channel Frequency |
300Hz-3400Hz |
|
Insertion Loss |
-2.0dB Nominal (User
adjustable) |
|
Idle Channel Noise |
£-65dB |
|
Return Loss |
300Hz - 600Hz -
³12dB
600Hz - 3400Hz -
³15dB |
|
Longitudinal Balance |
³ 46dB between 300Hz to 3400Hz |
|
Ring Frequency |
25 Hz (20Hz, Optional) |
|
Ring Voltage |
³ 75 volts RMS into a load of 5 R.E.N.
with a 0.30 Erlang traffic pattern |
|
Subscriber Loop Current |
³ 23mA into a subscriber loop of 1000
ohms |
|
Overload Level |
+3.14dBm ± 0.5dBm |
|
Battery Reversal |
All channels |
|
Dial Pulse Speed |
8 -12 pps - Pulse Dialing /
DTMF Dialing |
Low Speed Data
Interface RS232
|
Interface |
RS232 |
|
Number of Interfaces per Card |
2 |
|
Maximum Number |
30 |
|
Conformity |
RS232 |
|
Mode |
Asynchronous |
|
Bit Rate |
50 bps to 19.2 Kbps |
|
User Interface |
DCE |
|
Character Length |
5 / 6 / 7 / 8 (Auto-Select) |
|
Stop Bits |
1 / 1.5 / 2 (Auto-Select) |
|
Parity |
Even / Odd / 0’s / 1’s / none
(Auto-Select) |
G.703 @ 64kbps, Synchronous Data Interface
|
Interface |
G.703@ 64 Kbps |
|
Number of Interfaces per Card |
2 |
|
Maximum Number |
30, V.35, 64Kbits / sec. Interface |
|
Conformity |
To
(CCITT) Rec. G.703 |
|
Mode |
Synchronous, Co-directional |
|
Bit Rate |
64Kbps |
Sub-Rate Multiplexer:- Optional Extra
|
Number of Interfaces per 64 Kbps channel |
6 |
|
Interface |
RS232 |
|
Mode |
Asynchronous |
| Bit
Rate |
9.6Kbps, 8 bits 1 stop bit |
|
Parity |
None |
BRI ISDN 2B+D
| "U" Interface |
Meets ANSI
T1.601-1992 requirements |
| Line Rate |
160 Kbits/s |
| Frame Format |
2B+D as per
CCITT Rec. 1.430 |
| Line Code |
2B1Q as per
CCITT Rec.G.961 |
| Accepted Line
Attenuation |
42dB at 40 Khz |
| Pulse Shape |
As per CCITT
Rec.G.961 |
| Multiplexer
Emulation |
LT Emulation /
NT Emulation (User Selectable) |
| Impedance |
135 Ohms at
40KHz |
iDSL - ISDN DSL Specifications
|
"U" Interface
|
Meets ANSI T1.601-1992 requirements |
|
Line Rate
|
160 Kbits/s |
|
Frame Format |
2B
as per CCITT Rec.1.430 |
|
Line Code |
2B1Q as per CCITT Rec.G.961 |
|
Accepted Line Attenuation |
42dB at 40 Khz |
|
Pulse Shape |
As
per CCITT Rec.G.961 |
|
Multiplexer Emulation |
LT
Emulation |
|
Customer Premises Equipment |
NT
Emulation |
|
Impedance |
135 Ohms at 40KHz |
Maximum Distance : 5KM (4
miles) on 0.5 mm twisted Pan. Distance may vary with cable gauge
For distance using various cable guages please refer to chart below.
|
Distance in Kms. (Miles) |
Data Rate
(Kbps) |
Wire Gauge (AWG/mm) |
| 19 (.9mm) |
22 (.6mm) |
24 (.5mm) |
26 (.4mm) |
128 / 144 |
17.4 (10.8) |
11.6 (7.2) |
8.1 (5.0) |
5.5 (3.4) |
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
Enviromental
| 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
voltages |
+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 |
21W -
with all 30 Voice Circuits
50W (Worst - Case) - all data circuits. |
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