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E1 WAN Access Multiplexer
- Technical Specifications
Product Overview
Valiant VCL-WAN 2Mbps E1 Access Multiplexer
/ E1 Data Multiplexer / E1 Drop-Insert Multiplexer provides an efficient and
cost-effective platform to convert 30, dial-up, analog voice circuits to a digital E1
interface. VCL-WAN Access Multiplexer (voice and data intelligent E1 multiplexer) may be
used to connect fully digital Corporate LANs and ISP Equipment and Networks with E1
interfaces to analog PSTN circuits, or analog equipment. The VCL-WAN Access Multiplexer
bridges the gap between the analog and the digital E1 world by providing an intelligent
interface to interconnect the Analog and the Digital.
The VCL-WAN Access Multiplexer shall
interface to the E1 port of any Switch / Server / PBX using Channel Associated Signaling
(CAS, R2 digital signaling) as per ITU-T Rec. Q.421 / Q.422, to interconnect up to 30,
analog interfaces to the E1 port. |
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Other Products
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| 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 |
| Signalling |
Channel Associated Signalling, R2
Digital (R2 Gen) R2 generic in accordance with ITU-T Q.421 / Q.422 Rec. |
| 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 |
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| 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 - 2Wire /
4Wire |
| 19 inch Shelf |
Ring Generator |
Notes:
FXO interface cards - connect to the analog PSTN (telco)
lines.
FXS interface cards - connect to analog telephone sets.
E&M interface cards - connect to E&M switches / interfaces.
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