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E1, 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.
E1, WAN Access Multiplexer
| 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 |
292 mm |
| Width |
482 mm |
| Weight |
8.5 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 |
Related Links
E1, WAN Access
Multiplexer
E1, WAN Access Multiplexer - Product Brochure
PRI ISDN Multiplexer
E1, Voice & Data Multiplexer
E3-2/34Mbps Multiplexer
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Technical
Specifications are subject to change without notice.
All other trademarks are the ownership of their respective owners. |
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