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E3, OLTE (Optical Line
Transmission Equipment)
Product Description
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Orion Telecom Networks Inc.
offers
the E3-OLTE is a 34Mbps Optical Line
Transmission Equipment which converts and transports a ITU-T G.703
compliant standard electrical E3, 34Mbps signal into a G.823 and G.821
compliant optical signal for transport over 1310nm optical |
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fiber cable.
The optical link, between two OLTE terminals is established on one pair
of optical fiber. One fiber link is used for transmit and the other
fiber link is used for receive. |
A complete optical line transmission
system comprises of two OLTE terminals one at each end of the
optical fiber cable. The E3, 34Mbps OLTE also offers 1+1 optical
protection (optical redundancy).
Both the Local and the Remote terminals can
be monitored and controlled by a Windows based GUI (Graphical User Interface), from a
single location. TCP-IP option for remote access is also available.
The E3-OLTE is available in two configurations:
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With the option of 1+1 Optical
Redundancy (Protection Switching), in
which the transmission automatically switches to a STANDBY optical link
in the event of a failure of the PRIMARY optical link
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Without the option of
Optical Redundancy (Protection Switching)
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Mechanical Specification
| Width |
480 mm |
| Depth |
280 mm |
| Height |
90 mm |
| Weight |
4.20 Kg |
| Features |
Highlights |
- Single - card implementation
- 1+1 Optical Redundancy (Protection Switching) option
- Standard CCITT (ITU-T) compliant interfaces
- Auto Laser Shut Off facility
- Remote and local terminal monitoring and control through back panel
by a Network Management System
- Optional TCP/IP Remote
Access for monitoring alarms and management
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- Extensive alarms and status indication facility
- Operates on nominal -48V DC input
- Distributed on-board power supply
- Microprocessor controlled with powerful diagnostic facilities for
both remote and local systems
- Powered by STM-1 grade Class I Laser - by Lucent Technologies
- Stored program controlled
- Highly reliable and compact
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External Interfaces
VCL-OLTE unit provides the following interfaces
to the external world:
- 1, 34Mbps, 75 W unbalanced electrical interface
- 2, 34Mbps, optical interface(s) - only one
link is active at a time (optional)
- -48V input for VCL-OLTE on-board power
supply
- RS-232 interface for connection to Network
Management System, used for configuration and monitoring of VCL-OLTE
system
- 2 alarm extensions for visual and audible
alarms
The
front panel LEDs provide the following indications
The LEDs provide the
following indications:
LED 1: -48V
LED 2: +5V DC
LED 3: 34Mbps Link 1 Optical Transmitter
LED 4: 34Mbps Link 1 Optical Receiver
LED 5: 34Mbps Link 2 Optical Transmitter
LED 6: 34Mbps Link 2 Optical Receiver
LED 7: 34Mbps electrical interface (Error) |
L1 is for switching on / off
optical transmitter - Link 1
L2 is for switching on / off optical transmitter - Link 2
TX1 Transmit port - Optical link1
TX2 Transmit port - Optical link2
RX1 Receive port - Optical link 1
RX2 Receive port - Optical link 2
NU Not Used |
Programming and
Monitoring
VCL-OLTE offers programming via
an RS-232 port for control and monitoring of the terminals. Both local and
remote terminals can be monitored and controlled using a PC loaded with the NMS software connected to the local terminal.
Programming Features
- Programming of 1+1 protection switching
- Auto Laser Shut off enable / disable
- Setting local or remote loopbacks on
34Mbps electrical stream
- Configuring of alarms
- Alarm acknowledgement option
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Status Monitoring
- Status of alarms.
- Presence or absence of loop-back on 34
Mbps electrical stream
- Enabled / disabled state of auto laser
shutoff facility
- Viewing the currently active receiver
and reason for switch over to that receiver
- Previous configuration files
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Alarm Status
Monitoring
- Loss of electrical signal at 34 Mbps port
- Auto Laser shut off disabled alarm
- Prompt maintenance alarm
- Status of audible alarm
- Loss of optical signal
- Loss of auxiliary frame signal
- Laser loss alarm
- Laser power alarm
- Laser switched off
- Bit error rate out of limit
In addition to the above monitoring facilities,
VCL-OLTE is provided with LEDs, which indicate various fault conditions.
Monitoring VCL-OLTE
via LED Indications
- Optical transmitter inactive
- Loss of incoming signal at 34Mbps electrical
port
- Loss of incoming signal at 34 Mbps optical
port
- +5V failure
- -48V input failure
Alarm Status Monitoring
- Loss of incoming signal at all 2Mbps ports
- Loss of incoming signal at 34Mbps port
- Loss of frame alignment at 34Mbps
- Remote Alarm at 34Mbps
- AIS at 34Mbps
- Excessive Error Rate at 34Mbps
- Status of audible alarm
Related Links
Others Links
Technical specifications are subject to
change without notice.
All brand names and trademarks are the property of their respective owners.
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