The E3-2/34Mbps, PDH Multiplexer is a
third order skip
multiplexer / demultiplexer unit,
based on PDH (Plesiochronous Digital Hierarchy) technology. It
multiplexes sixteen 2.048Mbps (hereafter referred to as 2Mbps) E1
tributaries into a single |
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34.368Mbps (hereafter referred to as 34Mbps)
E3 tributary. The multiplexer / demultiplexer also does the reverse
processing i.e. demultiplexing a received 34Mbps stream into sixteen
2Mbps E1 tributaries. |
2/34 Mbps Multiplexer
system consists of two 2/34 Mbps terminals one each at the local and
remote ends, connected through a 34Mbps stream, providing end to end
services for sixteen, 2Mbps streams. Both local and remote terminals can be
monitored and controlled by a Network Management System (NMS) connected to
the local terminal.
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FEATURES
- Single - card implementation
- Plug and Play Multiplexer
- Modular 2Mbps transmission units
- Standard CCITT (ITU-T) compliant interfaces
- Capable of synchronizing on any of the 34368
kHz clock sources - internal, external or extracted
- Remote and local terminal monitoring and
control by Network Management System
- Optional TCP/IP Remote Access
for monitoring alarms and management
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HIGHLIGHTS
- Extensive alarms and status indication facility
- Service bit monitoring and insertion
- Operates on nominal -48V DC input
- Distributed on-board power supply
- Microprocessor controlled with powerful
diagnostic facilities for both remote and local systems
- Local and remote loopback facility for 34Mbps
stream
- Stored program controlled
- Highly reliable and compact
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EXTERNAL
INTERFACES
The E3 unit provides the
following interfaces to the external world:
- 16, primary rate, 2Mbps, 120 W balanced
interface
- 1, third order, 34Mbps, 75 W unbalanced
interface
- -48V input for 2/34 on-board power
supply
- RS232 interface for connection to Network
Management System, used for configuration and monitoring of the 2/34
multiplexer.
- 2 alarm extensions for visual and audible
alarms.
The front
panel LEDs provide the following indications:
L1 - E3 LOS
L2- E3 Sync / Alarm
L3- E3 BER
L4- E3 CLK FAULT
L5- E3 REMOTE ALARM
L6- E3 AIS ALARM RJ-45 "LAN Port" |
L7- E3 TX FAULT
L8- E1 LOS
L9- ST ERROR
L10- "LAN ON"
L11- Positive 5V present
L12- Negative 48V input
present SW1 "LAN ON / OFF" Toggle
Switch
SW2 LAN Reset Switch |
Programming and Monitoring
2/34 Mbps Multiplexer offers programming via an RS232 port for
control and monitoring of the terminals. Both local and remote
multiplexer can be monitored and controlled using a PC loaded with the NMS software connected to the local terminal.
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Programming Features
- Setting loopbacks on 2Mbps or 34Mbps
- Enabling or disabling 2Mbps channels
- Initiating self tests
- Alarm acknowledgment option
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Status Monitoring
- Priority sequence of clock selection and
current clock on which the system is working
- Status of alarm
- Presence or absence of loop-back on 34Mbps and
2Mbps streams
- Enabled / disabled status of 2Mbps channels
- Monitoring healthy / unhealthy state of
microcontroller and 2Mbps line interface units
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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
In addition to the above monitoring facilities,
2/34Mbps Multiplexer is provided with LEDs on the front panel of the
multiplexer, which indicate various fault conditions.
- Monitoring E3 via LED
Indications
- Loss of signal at 2Mbps
- Loss of signal at 34Mbps
- Loss of frame alignment at 34Mbps
- Remote Alarm at 34Mbps
- AIS at 34Mbps
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- Excessive Error Rate at 34Mbps
- +5V failure
- -48V input failure
- Processor unhealthy alarm
- Prompt Maintenance alarm
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Others Links:
VoIP SS7 and C7 Solution
E1 VOIP-GSM Gateway
GSM Gateways / GSM Channel Banks
Echo Cancellers
Digital Access Cross Connect Switch (DACS)
Groomers (Hi-Z Non-Instrusive Monitoring)
Multiplexers
Technical specifications are subject to change without
notice.
All brand names and trademarks are the property of their respective owners.
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