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4 Port E1/T1 to Fibre/Fiber Media Converter
Centrally manageable via Ethernet, transports Ethernet/LAN traffic across the fibre as well as the E1/T1s, and you can cascade Mediabands to get more circuits across a fiber link.
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Simple to install and use, mediaBand is the professional's choice and is optionally Approved for direct connection to carrier leased lines and ISDN services.
A product description is given below, as well as on the panel to the right. |
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Features |
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MediaBand-4 transports up to four
E1/T1 circuits across a wide variety
of fibre links.
The same fibre can be used to
simultaneously transport Ethernet
services. |
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Highly-accurate clocking and
clocking options |
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Support for multiple different
clocks across the fibre |
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Remotely manageable via
Ethernet ports |
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Telecoms Approvals for direct
connection to carrier’s leased lines |
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Real-time Events & Alarms |
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Distribution options across UTP |
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Intuitive graphical manager – no
DIP switches! |
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Real-time Events & Alarms |
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Excellent diagnostics and link
performance statistics |
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Robust, reliable and professional
quality |
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Inter-works with other members of
the MediaBand family |
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MediaBand excels in delivering
stable, reliable and manageable
services across fibre links and
benefits from Patapsco’s excellent
support. |
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Connectivity Overview |
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The MediaBand-4 interfaces to up to four E1 or T1 circuit and delivers these clear trunks
transparently across a fibre link.
Pairs of MediaBands are required, but different versions can be used at each end, opening a
number of interesting conversion opportunities which are covered below.
Furthermore, multiple units can be inter-connected to drive more E1/T1s over a single fibre
link.
MediaBands can also be inter-connected to distribute E1/T1s across a site on standard
CAT5E cabling.
The fibre presentation is via an SFP (Small Form Pluggable) socket into which most standard
SFP modules can be inserted, providing customers with the option and flexibility to use
different light sources for different fibres over different distances.
An RJ45 Ethernet port is available for connection to a LAN for both transportation of Ethernet
traffic over the fibre and for centralised management and Event/Alarm reporting.
2. Interfaces |
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Interfaces |
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4 x E1 or T1 interfaces (user switchable impedance matching)
RJ45 120 Ohm or 75 Ohm (user switchable) via converter cable.
Full E1/T1 clear-channel
SFP cage with the appropriate SFP Module interconnects to a fibre at 10/100/1GE.
A local 10/100/1GE UTP Ethernet port for transporting packetised traffic, for
management purposes or inter-linking MediaBands, RJ12 serial management port.
MediaBand can also be controlled/managed across the fibre link through its partner’s
LAN or serial connection
IEC connector for quality internal AC PSU (DC options available) |
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Clocking and Clock Sources |
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MediaBand can be easily configured via the GUI Manager to clock or be clocked in a number of ways.
If no external clock is available, as in Diagram 2, one MediaBand can be configured to be the clock Master and will clock all of its E1/T1
interfaces. Its partner MediaBands will slave clock across the fibre link. This method, as opposed to running both ends via their onboard
oscillators, ensures the clocks are always locked and there will be zero slips/hits due to clock drift. |
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MediaBand can pass a single master clock
source, derived from an E1/T1, across the
fibre link ensuring both ends are synchronised
to the provided clock source. Diagram 3
illustrates this scenario. Any E1/T1 port can be
used as a clock source and MediaBand can
be configured to switch to other interfaces to
source clock should this Primary clock fail, thus
ensuring other circuits are maintained. |
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Uniquely, MediaBand can optionally
support more than one clock across the
fibre link, so differently-clocked E1/T1s
can be combined within MediaBand-4
and the separate clocks presented at the
other end of the fibre link. Diagram 4
shows several clocks being transported. |
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Diagram 5 shows an example where both
customer devices have a master clock source
on an E1/T1. Each MediaBand can be
configured to accept this clock and crucially a
buffer can be user-configured to handle any
slight clock differences between the two
sources, again ensuring there are no data
losses. |
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Ethernet Port |
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Screen shot
showing basic
configuration
parameters
including clock
priorities and
status.
Click image for larger picture. |
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MediaBand-1 provides a 10/100/1GE Ethernet port. This can be used for Management of a particular unit or its partner at the other
end of the fibre.
This Ethernet port can also be used to transport user Ethernet traffic through MediaBand and across the fibre, as shown in Diagram 1
above. This means a single fibre link can transport an E1/T1 PLUS Ethernet traffic. Support for packets up to 1632 bytes in size
(10,240 bytes Mar 09).
Rate Limiting
Depending on Ethernet and fibre speeds, it is possible for the local LAN traffic, when using MediaBand’s ability to transport Ethernet
across the fibre, to swamp the fibre link to the detriment of the E1/T1.
MediaBand has a Rate Limiting feature which can “choke” the Ethernet traffic down to a configured speed, irrespective of the speed of the
connected Ethernet, ensuring delivery of the E1/T1 circuit.
MediaBand Distribution
Instead of connecting the Ethernet port to a LAN, using a dedicated CAT5E cable between two locally-located MediaBands means multiple
units can be inter-connected to use the same fibre, as in Diagram 6. This means, within the limits of driving distances, E1/T1 ports can be
located where needed, for example in different communications racks. Diagram 6 shows two MediaBand-4s providing 8 E1/T1s across
the fibre.
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Approvals |
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All approvals completed in a UK Accredited
laboratory. Reports available. CE marked.
Safety and Emissions (EMC) approvals (CE
and FCC)
Telecoms approvals for connection to carrier
leased lines is optionally available.
MediaBand TDM-4 is RoHS compliant
without the use of “exceptions”. |
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Interworking |
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It is possible to mix versions of MediaBand, so for example in place
of the second MediaBand-4 in diagram 6 you could use a X.21 or
V.35 MediaBand-VX
See also Patapsco’s MediaBand-8 and MediaBand-32 which are
resilient chassis supporting 8, 16 or 32 E1/T1 ports over fibre,
with the option of using two fibres for load-sharing and resiliency.
MediaBand-32 load-shares across the two fibres and automatically
switches to a single fibre should one fail. |
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Management |
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Overview
MediaBand can be locally or remotely configured using Patapsco’s easy-to-use high functionality DbManager GUI software.
Optionally available are versions to support and give visibility of many MediaBand units, consolidating control, configuration, Events/Alarms and
diagnostics. It is sophisticated but simple to use via an intuitive Graphical User Interface (GUI) and can also generate SNMP Traps and Alarms.
The DbManager supplied with MediaBand (DbLite) allows control and visibility of a single MediaBand at any one time. A document identifying the differences between DbLite and other versions is available.
An option to encrypt the management traffic across the packet network is available, together with a key management/update system.
Demonstration software is available which illustrates both the DbManager and the MediaBand features. |
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A DbManager screen shot showing the MediaBand to which
the manager is connected, two pairs of MediaBands and
their links and status and the Event/Alarm log.
Click the image for a larger picture.
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Configuration Changes
Configuration changes on MediaBand are made via the DbManager. All configurations can be stored on DbManager.
Installations require little or no expertise in the field as most configurations (other than setting an IP address) can be performed remotely.
Configurations are held in non-volatile memory. |
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Management Tools
A wide number of statistics are available for the E1/T1 circuit and Ethernet port. |
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Alarms/Events
All Alarms are reported back to the DbManager and presented in a dedicated window with descriptor.
Events and Alarms are held within MediaBand for access via DbManager.
A dry contact alarm relay is available in the RJ12 port.
Clocks
Information and graphs showing clock movements over time. Shows frequency stability and the status of the clock.
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Loop-Backs
Loops can be placed on the TDM port in either direction and at the Ethernet level. |
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Pings
MediaBand generates Ping/Trace Route and responds to Ping and UDP Echo requests.
Click the image for larger picture. |
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Boot Test
Internal test on power-up with results visible via DbManager. |
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Software/Firmware Updates |
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New software can be loaded via the DbManager to MediaBand New software is loaded to the off-line sector of Flash and is confirmed via
a CRC. Users can switch to the new software at any time. DbManager can load new versions to multiple MediaBands simultaneously. |
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Power |
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Internal High-Quality AC supply |
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Auto-sensing, standard IEC input. |
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Optional DC Supplies 48VDC or 24VDC (nominal) |
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Replaces AC supply. Specify when ordering. |
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Specifications |
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A. TDM port (E1) |
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TDM port (E1)
RJ45 connector
Presents as DCE (crossed cable for DTE)
120 Ohm
75 Ohm user-selectable via converter cable
G.703 unstructured
HDB3
Transparent to user signaling |
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B. TDM port (T1) |
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RJ45 connector
Presents as DCE (crossed cable for DTE)
100 Ohm
Unframed G.703 1.544Mbps
B8ZS or AMI selectable
Transparent to user signaling |
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C. Ethernet Interfaces |
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1 x SFP cage (module not supplied) for various fibre modes
1 x RJ45 UTP
10/100/1GE
Auto-sensing or manual |
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D. Local Management Port |
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RJ12
Asynchronous
Auto-sensing to 115kbps
Also remote access via packet network |
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E. Oscillator Performance* |
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Standard
Hold-over 24hrs 0.5ppm
Aging per day 20ppb
Temperature Stability 0.600ppm
Enhanced
Hold-over 24hrs 15ppb
Aging per day 10ppb
Temperature Stability 12ppb
* Figures based on typical parts and performances. Individual oscillators may
vary slightly. Temperature Stability range -5°C to +70°C assumes 20 minutes
from power on. Aging and holdover at constant temperature |
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F. IP & MAC Address |
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Single MAC address, IP address, subnet mask and default
gateway |
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G. Configuration |
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Held in non-volatile memory |
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H. Realtime Clock |
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For time-stamping Events and Alarms |
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I. Power (AC)
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Internal via IEC connector
Auto-sensing 96VAC-240VAC
Max consumption 0.2Amps RMS @230VAC
MTBF 400,000hrs< |
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I. Power (DC) |
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1. Nominal -48VDC
4mm terminal block
-33VDC to -75VDC
0.35A max
MTBF 1,790,000hrs
2. Nominal -24VDC
4mm terminal block
-18VDC to -75VDC
0.55A max
MTBF 800,000hrs |
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J. Dimensions & Environment |
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Metal chassis and front/rear panels
W – 225; D – 200; H – 44mm
Weight – 0.9Kg/2lb
Optional 19” rack-mount kit; 1 unit per 1U or 2 units
side-by-side per 1U
Operating Temperature -20°C to +55°C
Humidity 10-90% non-condensing4 |
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K. Maintenance |
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There are no serviceable parts or maintenance required |
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L. Approvals |
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EMC
EN55022:1988
EN55024:1988
EN61000-3-2:2000
EN61000-3-3:1995
AS/NZ CISPR22:2000
FCC Part 15(B)
RoSH Compliant without the use of exceptions |
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M. Safety |
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EC EN60950-1:2002
ACA TS001:1997
ACS/NZ60950:2000
AS/NZS3260:1993
IEC950 |
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N. Telecomms (optional) |
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TBR12/TBR13
TBR4/TBR3
TIA/E1A-1S/968
TNA117
AS-ACIF S006/S016 |
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