Fractional E1 Access Units
Fractional E1 Access Units
Fractional E1 Access Units
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3-11<br />
<strong>E1</strong> DXC<br />
<strong>E1</strong> <strong>Access</strong> Series<br />
ETU-DXC<br />
<strong>E1</strong> Digital Cross Connect <strong>Access</strong> Unit<br />
The ETU-DXC Digital Cross Connect offers two models, the ETU-DXC/8 and the ETU-DXC/16. These units provide 8 or<br />
16 <strong>E1</strong> circuits (inputs and outputs) respectively. Within the <strong>E1</strong> circuits, non-blocking, fully transparent cross-connects<br />
between 64Kbps timeslots can be efficiently implemented. This equipment may be used as a core building block in a<br />
digital data network based upon multiple <strong>E1</strong> lines. When combined with Time Division Multiplexing (TDM) equipment<br />
such as the ETU02-MUX or ERM-MUX/PLUS, the main functions of a DDN network may be performed. This equipment<br />
does not support signaling and is therefore not applicable for voice applications.<br />
Features<br />
8 or 16 <strong>E1</strong> ports depending on model.<br />
19", 1U Standard, Stand-alone or rack mountable<br />
Balanced <strong>E1</strong> (120ohm) or unbalanced <strong>E1</strong>(75ohm) switchable<br />
Complies with all ITU-T specifications<br />
<strong>E1</strong> point-to-point 64Kbps transparent cross connect<br />
Provides user friendly interface NMP function<br />
System clock recovered from any <strong>E1</strong> or from internal oscillator<br />
SNMP enabled device (optional)*<br />
* to be announced<br />
Application<br />
Specifications<br />
Frame format<br />
Bit rate<br />
Line Code<br />
Receiving level<br />
Line Impedance<br />
Jitter Performance<br />
Pulse amplitude<br />
Connector<br />
Management<br />
Diagnostics<br />
<strong>E1</strong> system Tx clock<br />
source<br />
Power<br />
Environment<br />
Power Consumption<br />
LEDs<br />
Dimensions(WxDxH)<br />
Weight<br />
Compliance<br />
Ordering Info<br />
ETU-DXC XX- XX<br />
Ports type Power type<br />
8 AC<br />
16 DC<br />
Network Management Protocol software (For Windows TM NMP<br />
only)<br />
Optional Adapter Cable<br />
CAB-DB25BNCF8-<strong>E1</strong><br />
CAB-DB25RJ45M4-<strong>E1</strong><br />
Unframed/ Framed<br />
CCS(PCM31)<br />
CRC4 On/ Off<br />
2.048Mbps±50 ppm<br />
AMI/ HDB3<br />
-20 / -43dB<br />
75 ohm, unbalanced (BNC)<br />
120 ohm, balanced (RJ-45) or High<br />
impedance<br />
According to ITU-T G.823<br />
Nominal 2.37V ±10% for 75ohm<br />
Nominal 3.00V 10% for 120ohm<br />
DB25 (adapter cable for 4x<strong>E1</strong>)<br />
NMP management system<br />
Local digital, local analog, remote loopback<br />
Recovery Recovery from any one<br />
<strong>E1</strong> Rx signal<br />
Internal 2.048MHz ±50ppm<br />
AC 90 — 250VAC<br />
DC -48 (-40 — -57)VDC<br />
Temperature 0 — 50°C (Operating)<br />
0 — 70°C (Storage)<br />
Humidity 0 — 90% non condensing<br />
20W<br />
Alarm, Activity, Power<br />
195mm x 235mm x 45mm<br />
2.5kg<br />
ITU-T G.703, G.704, G.823<br />
DB25 Male to BNC x 8<br />
DB25 Male to RJ45 x 4
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