| Digital Interface 2048 Kbps |
| |
| Number of E1 Interfaces |
1 |
| Conformity
(Electrical) |
G.703 |
| Frame Structure |
As per ITU-T (CCITT) G.704 |
| Signaling |
PRI ISDN (Euro ISDN) signaling as
per ITU-T Rec. Q.921, Q.931 |
| PCM Sampling Rate |
8000 samples / sec. |
| Encoding Law |
A law as per ITU (CCITT) G.823 |
| Bit Rate |
2048 Kbps ± 50 ppm |
| Code |
HDB3 |
| Nominal Impedance |
120 W Balanced |
Peak Voltage of a mark
120 W Balanced
interface |
3.0 V ± 0.3 V |
Peak Voltage of a space
120 W Balanced
interface |
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 multi-frame alignment |
As per
clause 5.2 of ITU (CCITT) G.732 |
|
| |
| 2
Wire, Analog Interface - FXS Interface |
| |
| Number of Interfaces per card |
2 |
| Interfaces Type |
FXS |
| Maximum Number of Channels |
30 |
| Transmission performance |
Fully compliant to ITU (CCITT)
G.712 specifications |
| Line Impedance |
600 W (900 W optional) |
| Connector |
RJ11 |
| Voice Channel Frequency |
300Hz - 3400Hz |
| Insertion Loss |
-2dB Nominal (User adjustable
range -2dB to -7dB |
| Idle Channel Noise |
£ -65dB |
| Return Loss |
300Hz - 600Hz - ³ 12dB
600Hz - 3400Hz - ³
15dB |
| Longitudinal Balance |
³ 46dB between 300Hz to 3400Hz |
| Ring voltage (FXS) |
³ 40 volts RMS into a load of 5R.E.N. with a 0.30 Erlang traffic pattern |
| Subscriber Loop Current (FXS) |
³ 23 mA into a subscriber loop of 1000 Ohms |
| Dialing Pulse Speed |
8 - 12 pps |
| Overload Level |
+3.14dBm ± 0.5dBm |
| Data Transmission |
Supports V.34 modems,
33.6Kbps (download data transmission rate) |
| Caller ID |
DTMF (provides Carrler ID to all
DTMF based decoders) |
|
| |
| Clock Synchronization |
| |
| Synchronization Sources |
Internal Clock or timing derived
from the E1, HDB3 link (Loop-Timed) |
| External Clock Input |
As per ITU (CCITT) Rec. G.703 |
| Impedance of External Clock Input
Port |
120 W Balanced |
| Default Option |
Internal Clock |
|
| |
| Power Supply |
| |
| Input DC voltage |
-48V DC ( nominal ) |
| Range of input |
-40V to -60V DC |
| Input Voltage Reversal Protection |
Provided |
|
| |
| Environmental |
| |
| Cooling |
Natural, Convection cooling |
| Temperature |
0°C to 50°C, Ambient |
|
| |
| Mechanical Specifications |
| |
| Rack Mounting |
Standard 19 inch DIN rack |
| Height |
3U (133.33 mm) |
| Depth |
292 mm |
| Width |
482 mm |
| Weight |
8.500 Kgs. |
|
| |
| Ordering Information |
| |
| Core System (Common Equipment) |
Choice of Interface Cards |
| Control Card 1 &
Control Card 2 |
FXS (Remote /
Subscriber) |
| Power Supply Card |
Ring Generator |
| Connectorized
Backplane & |
. |
| 19 inch Shelf |
. |
|
