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VCL-PRI Channel Bank for FXO,
FXS and E&M
Specifications |
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The
VCL-PRI ISDN (Euro ISDN) Multiplexer shall interface
to the E1, PRI ISDN port of any Switch / PBX using
PRI ISDN (Euro ISDN) signaling as per ITU-T Rec.
Q.931 to inter-connect up to 30, analog interfaces
to the E1, PRI ISDN port.
| Digital
Interface
2048 Kbps |
| Number
of E1 Interfaces |
1,
(+ 1 additional port for Drop-Insert
applications) |
| Conformity
(Electrical) |
G.
703 |
| Frame
Structure |
As
per ITU-T (CCITT) G.704 |
| Signaling |
As
per ITU-T Rec. Q.931 to inter-connect up
to 30, analog interfaces to the E1, PRI
ISDN port. |
| 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 (75 W Unbalanced - Option
available on request |
Peak
Voltage of a mark
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
120 W Balanced interface
75 W Unbalanced interface |
0 V ± 0.3 V
0V ± 0.237 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 PSTN Interface - POTS
Interface |
| Maximum
Number of Channels |
30 |
| Transmission
performance |
Fully
compliant to ITU (CCITT) G.712
specifications |
| Line
Impedance |
600
W (900 W optional) |
| Voice
Channel Frequency |
300Hz
- 3400Hz |
| Insertion
Loss |
-1dB
Nominal (User adjustable in steps of 1dBm
through Network Management Software |
| Idle
Channel Noise |
£
-65dB |
| Return
Loss |
300Hz
- 600Hz - ³ 12dB
600Hz - 3400Hz - ³ 15dB |
| Longitudinal
Balance |
³
46dB between 300Hz to 3400Hz |
| Ring
frequency detection |
25
Hz and 20 Hz |
| Ring
voltage detection |
³
30 volts RMS |
Overload
Level
Data Transmission |
+3.14dBm
± 0.5dBm
Supports V.34 modems, 33.6Kbps (download
data transmission rate) |
| Clock
Synchronization |
| Synchronization
Sources |
Internal
Clock, External Clock or timing derived
from the E1, HDB3 link |
| External
Clock Input |
As
per ITU (CCITT) Rec. G.703 |
| Impedance
of External Clock Input Port |
120
W Balanced / 75 W Unbalanced |
| 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 |
260
mm |
| Width |
477
mm |
| Weight |
8.500
Kgs. |
| Ordering
Information |
| Core
System (Common Equipment) |
Choice
of Interface Cards |
| Control
Card 1 & Control Card 2 |
FXO
(Central Office) |
| Power
Supply Card |
FXS
(Remote / Subscriber) |
| Connectorized
Backplane & |
E&M
- 2W / 4W |
| 19
inch Shelf |
Ring
Generator |
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