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PRI ISDN Q.931
Multiplexers
Technical Specifications
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PRI (Primary Rate Interface) ISDN Multiplexer provides
an efficient
and cost-effective platform to convert 30, dial-up,
analog voice
circuits to a digital E1, PRI ISDN interface, as per ITU-T Q.931
recommendations. PRI ISDN (Euro ISDN) |
 |
|
Multiplexer may be
used to connect fully digital Corporate LANs and ISP Equipment and
Networks with E1, PRI ISDN interfaces to analog PSTN circuits, or analog
equipment. |
FXS - Q.931 FXS
- FXS interface cards - connect to analog telephone sets.
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Digital Interface 2048 Kbps |
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Number of E1
Interfaces |
1 |
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Conformity (Electrical) |
G.703 |
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Frame
Structure |
As per ITU-T
(CCITT) G.704 |
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Signaling |
PRI ISDN
(Euro ISDN) signaling as per ITU-T Rec. Q.921, Q.931 |
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PCM Sampling
Rate |
8000 samples
/ sec. |
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Encoding Law |
A law as per
ITU (CCITT) G.823 |
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Bit Rate |
2048 Kbps ±
50 ppm |
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Code |
HDB3 |
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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 |
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Nominal Pulse
Width |
244 ns |
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Pulse Mask |
As per ITU (CCITT)
Rec. G.703 |
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Output Jitter |
< 0.05 UI (in
the frequency range of 20Hz to 100 KHz |
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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 |
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Jitter
Tolerance |
As per ITU (CCITT)
G.823 |
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Loss and recovery of frame alignment : As per clause 3 of ITU (CCITT)
G.732 |
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Loss and recovery of multi-frame alignment : As per clause 5.2 of ITU
(CCITT) G.732 |
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2 Wire, Analog Interface - FXS
Interface |
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Number of
Interfaces per card |
2 |
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Interfaces
Type |
FXS |
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Maximum
Number of Channels |
30 |
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Transmission performance |
Fully
compliant to ITU (CCITT) G.712 specifications |
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Line
Impedance |
600
W |
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Connector |
RJ11 |
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Voice
Channel Frequency |
300Hz -
3400Hz |
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Insertion
Loss |
-2dB
Nominal (User adjustable range -2dB to -7dB |
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Idle
Channel Noise |
£
-65dB |
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Return Loss |
300Hz -
600Hz - ³
12dB
600Hz - 3400Hz - ³
15dB |
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Longitudinal Balance |
³
46dB between 300Hz to 3400Hz |
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Ring
voltage (FXS) |
³
75 volts RMS into a load of 3 R.E.N. |
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Ring
Frequency |
20 Hz / 25
Hz (User Selectable) |
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Subscriber
Loop Current (FXS) |
³
23 mA into a subscriber loop of 1000 Ohms |
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Dial Tone |
400 Hz
modulated by 25 Hz |
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Dial Tone
Timeout |
12 seconds |
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Dialing |
DTMF |
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Overload
Level |
+3.14dBm ±
0.5dBm |
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Data
Transmission |
Supports
V.34 modems,
33.6Kbps (download data transmission rate) |
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Caller ID |
DTMF
(provides Carrler ID to all DTMF based decoders) |
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Clock Synchronization |
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Synchronization Sources |
Internal
Clock or timing derived from the E1, HDB3 link (Loop-Timed) |
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External
Clock Input |
As per ITU
(CCITT) Rec. G.703 |
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Impedance
of External Clock Input Port |
120
W
Balanced |
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Default
Option |
Internal
Clock |
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Power Supply |
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Input DC
voltage |
-48V DC (
nominal ) |
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Range of
input |
-40V to
-60V DC |
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Input
Voltage Reversal Protection |
Provided
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Environmental |
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Cooling |
Natural,
Convection cooling |
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Temperature |
0°C to
50°C, Ambient |
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Ordering Information |
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Core System (Common Equipment) |
Choice of Interface Card |
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Control Card |
FXS (Remote / Subscriber) |
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NMS Card |
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Power Supply Card |
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Connectorized Backplane & 19 inch Shelf |
. |
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Ring Generator |
. |
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Mechanical Specifications |
| Rack Mounting |
Standard 19
inch DIN rack |
| Height |
3U (133.22 mm) |
| Depth |
292 mm |
| Width
|
482 mm |
| Weight |
8.50 Kgs. |
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Power Consumption |
| Power Consumption
24 Watts (Full Load) |
Others Links:
VoIP SS7 and C7 Solution
E1 VOIP-GSM Gateway
GSM Gateways / GSM Channel Banks
Echo Cancellers
Digital Access Cross Connect Switch (DACS)
Groomers (Hi-Z Non-Instrusive Monitoring)
Multiplexers
Technical specifications are subject to change without
notice.
All brand names and trademarks are the property of their respective owners.
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