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Description
Comarra offers
its Ethernet to E3 Switch (Ethernet over E3 Switch)
packaged in a 19-inch rack mountable chassis.
Comarra Ethernet to E3 Switch
(Ethernet over E3 Switch) provides a 100BaseT data interface on the user
side which may be used to transport Ethernet traffic over a E3 link. The
converter provides a simple and cost effective method to convert and
transport 100BaseT ethernet data over a E3 link.
Ethernet to E3 Switch
- Data Sheet
Comarra offers its Ethernet to E3
Switch (Ethernet over E3 Switch) packaged in a 19-inch 1U (44mm) high
rack-mountable chassis.
Comarra Ethernet to E3 Switch
(Ethernet over E3 Switch) provide a 100BaseT data interface which may be
used to transport Ethernet traffic over an E3 link. The converter provides a
simple and cost effective method to convert and transport 100BaseT ethernet
data to an E3 stream. The converter may be accessed by the user for
configuration and monitoring through a Windows based GUI that is shipped
with the system. It may be also accessed remotely over a TCP/IP network.
Why we are
better:
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Our Ethernet over E3 equipment offers the following necessary features
that similar equipment from the other manufacturers do not offer or
support.
Note: Enabling the Framing option
becomes essential when you inter-connect and
use the equipment over an Sonet/SDH network. If you connect an Un-Framed E3 interface of the equipment to a Framed E3 network interface,
the
network is likely to
show an error on the E3 interface.
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Our equipment allows the user to connect
to, configure and manage the equipment remotely over a TCP/IP network.
Most of the equipment being offered by the competition does not offer
this feature.
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Our equipment supports efficient handling
of data, even during data bursts. Our product design provides a very
large buffer data storage capacity to allow for and handle any data
bursts very efficiently.
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Supports Jumbo Frames: Our equipment is
equipped with a Committed Information Rate controller (CIR) which
manages any data overflows through its 100MHz SDRAM controller which
interfaces to a 32-bit wide 128 Mbit SDRAM. The SDRAM is used to
buffer the data from the Ethernet and WAN ports for transport. It can
accommodate up to 8192 frames with a maximum frame size of 2016 bytes
to prevent any data overflows, or loss of packets in the event of a
data burst.
Flow control is a part of basic ethernet communication protocol and the
TCP-IP flow control protocol ensures that an optimum flow control is
maintained at all times.
Note # 1: It is essential that the two routers / servers be
operating in the same IP
domain (subnet), since the Ethernet over E3 Switch simply
interconnects two LANS over a E3 link. The Ethernet over E3 Switch does not do any routing function. It simply provides a bridge to
inter-connect two LANs over a E3 link.
Note: The equipment should always be installed and used in pairs
- with each unit to
be installed at either end of the E3 link.
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Features & Highlights
- G.703 E3 34 Mbps to Ethernet interface
converter
- 100BaseT full duplex fast Ethernet in
accordance with IEEE802.34, RJ-45
- 100 Mbit/s full duplex – Autonegotiation
- Provides framed and un-framed E3 option
- Stratum 3 Clock
- Local & Remote access and monitoring with
either RS232 or 10/100BaseT for remote management over TCP-IP network
- Power Supply: -48V DC or AC power supply
options available
- Ethernet frame size: 2016 bytes (max)
- Supports Jumbo Frames
- Accommodates up to 8192 frames with a
maximum frame size of 2016 bytes
- Prevents any data overflows, or loss of
packets in the event of a data burst.
Applications
- 100 BaseT Ethernet to E3 Conversion
(100BaseT over an E3 interface)
- Ethernet over E3 converter - Remote LAN
application
- Ethernet over E3 converter - Remote LAN
over wireless E3 application
Indications and Alarm
Monitoring
- E3 Loss of Signal
- Loss of E3 frame (in framed E3 mode)
- Loss of incoming signal at 100 BaseT
Ethernet
- Loss of ethernet packets, errored
ethernet packets, over-sized ethernet packets and under-sized
ethernet packets log.
- Configuration Error Alarm
- Clock Status
- +3 Volts Power Supply
- -48V DC present
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Configuration Error
Programmable Features
- Telnet interface for remote programming by
using CLI text commands.
- Easy to use programming using Windows
based GUI.
Status Monitoring
- Status of alarms on E3 interface
- Status of alarms on 100BaseT interface.
Ethernet Interface
| Interface Types |
100BaseT |
| Standards
Compliance |
IEEE 802.3-2002
RFC1662
RFC2615
X.86
RMII |
| Interface Rate |
100BaseT limited to E3
transmission rate |
| Protocol |
User Programmable HDLC And
LAPS mapping |
E3 Interface
| Bit Rate |
34.368 Mbps |
| Bit Rate Tolerance |
+/- 20ppm |
| Line Code |
HDB3 |
| Frame Structure |
As per G.751 |
| Interfaces |
As
per G.703 |
| Connectors |
BNC, Co-axial
Un-balanced |
| Impedance |
75 Ohms |
Application Diagrams
Technical Specifications
DC Adapter Power Supply Specifications (DC
Option)
| Power Supply |
-48V DC (-40V DC to -60V DC) |
| Input DC voltage |
-48V DC ( nominal) |
| Range of input |
-40V to -60V DC |
| Output voltages |
+3.3V |
| Full Load Output Current |
2A at +3.3V |
| Input Voltage Reversal
Protection |
Provided in the Card |
| Over Current Protection |
2A for +3.3V |
| Short Circuit Protection
|
Current limit - 3A. Recovers
on removal of short |
| Under Voltage |
< 3.17V |
| Over Voltage |
3.5V |
| Efficiency at full load |
>90% |
| Ripple at full load |
<5mVrms |
| Spike at full load |
<50mV |
AC Adapter Power Supply Specifications (AC
Option)
| Input AC voltage |
100 - 240 Volt AC |
| Range of Input Voltage |
100 V To 240 V AC |
| Output voltages |
7.5 V DC to 9.0 V DC DC
input polarity protection. |
| Maximum Full Load Output
Current |
2.5 A at 7.5 V DC / 9.0 V DC |
| Input Voltage Reversal
Protection |
Provided in the Card |
| Efficiency at full load |
>86% |
Chassis
1U High (42 mm)
19-inch rack-mounting shelf.
Power Supply
| Power Supply: |
-48V DC (-40V DC to -60V DC)
(Optional)* |
| Power Supply: |
AC Input (Optional)* |
* Please
specify the Power Supply Option (AC or DC) which is required before
placing the order.
Please see ordering information in this data sheet for details. |
Power Consumption
Power Consumption: 9 Watts
100BaseT Interface
| Number of Interfaces |
One |
| Interface Types |
100BaseT |
| Standards Compliance |
IEEE 802.3-2002
RFC1662
RFC2615
X.86
RMII |
| Interface Rate |
100BaseT limited to E3
transmission rate |
| Protocol |
User Programmable HDLC And
LAPS mapping |
| Connectors |
RJ45 (100BaseT Electrical) |
E3 Interface
| Number of E3 Interfaces |
1 |
| Bit Rate |
34.368 Mbps |
| Bit Rate Tolerance |
+/- 20ppm |
| Line Code |
HDB3 |
| Frame Structure |
As
per G.751 |
| Interfaces |
As
per G.703 |
| Connectors |
BNC, Co-axial Un-balanced |
| Impedance |
75 Ohms |
| Permissible Attenuation |
12dB @ 17184 KHz |
| Signal Level to declare Loss
of Signal condition |
-35dB (maximum) |
| Signal Level to clear Loss
of Signal condition |
-15dB (minimum) |
Clock
Clock
Internal |
AT&T TR62411, Telcordia
GR-1244-CORE, Stratum 3, Stratum 4, Enhanced and Stratum 4, ETSI ETS 300
011, ITU-T G.813 Option 1 |
| Loop-Timed |
Timed from E3 Interface. |
| External |
75 Ohms - 1.544 MHz (TTL
levels) |
Management and Control
-
Serial Management Port - RS232 interface
- 10/100BaseT for Remote Management over a
LAN.
- 10/100BaseT Telnet over a TCP-IP Network.
Command Language
Command Line Interface (english text commands)
Windows based GUI (optional).
NMS (with Telnet) XPort
Specifications
| Network
Interface |
RJ-45 Ethernet 10BaseT or
100BaseT-TX (auto sensing) |
| Compatibility |
Ethernet Version 2.0
IEEE802.3 |
| Protocols |
Supported ARP, UDP/IP,
TCP/IP, Telnet, ICMP, SNMP, DHCP,
BOOTP, TFTP, Auto IP, SMTP and HTTP |
| LEDs |
10Base-T & 100Base-TX
Activity, Full/half duplex. |
| Management |
Internal web server,
SNMP (read only), Serial login, Telnet login |
| EMI Compliance |
- Radiated & conducted emissions -
complies with Class B limits of EN55022:1998
- Direct & Indirect ESD - complies with
EN55024:1998
- RF Electromagnetic Field Immunity -
complies with En55024:1998
- Electrical Fast Transient/Burst
Immunity - complies with EN55024:1998
- Power Frequency Magnetic Field
Immunity - complies with EN55024:1998
- RF Common Mode Conducted
Susceptibility - complies with EN55024:1998
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