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Maindenhead, 8 Aug 2005 - Trend
Communications Ltd.
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International WorkShop
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Understanding the benefits and risks of
migration to NG Networks
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NGN ¦ xDSL
¦ E1 ¦ SONET
¦
GigE
¦ SDH
¦ ADSL2+ ¦ VoIP
¦ Copper ¦ UMTS
¦ Jitter ¦ VCAT
¦ LCAS
 uring
the first half of 2005, Trend Communications organised a series of International
Workshops on Gigabit Ethernet and Next-Generation SDH/SONET in major cities
around the world. As these workshops have become so popular and the participants
have rated them so high, Trend has decided to continue along the same road,
and run even more of these well received workshops during the second half
of the year and in the future.
As all the leading
telecommunications companies are now migrating to next-generation SDH/SONET,
there are certain issues that are real hot topics in the communications
world. These key issues include migration strategy, effective roll-out
and testing, and, of course, understanding the technology itself.
There is a serious
interest in the market for knowing why to adopt the technology, what are
its benefits, and what do these changes mean for today’s and tomorrow’s
telecommunications market. Trend’s Workshop aims to answer these questions,
as well as offer an overview of the global market, highlighting the market
trends.
The Workshop consists
of two parts; the first part explains the theory behind the practice, including:
Ethernet architectures
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Gigabit Ethernet
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SDH legacy and NG
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SDH schemes, services and protocols
The second part is a practical hands-on session covering the key issues
and challenges in installing, configuring and troubleshooting Next-Generation
SDH/SONET networks, for example:
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GigE installation
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Benchmarking tests and general testing considerations for NG SDH/SONET
and GigE
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Higher-layer monitoring
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Installation and maintenance of NG SDH/SONET and GigE
With more than 30 years
in the market, we have now decided to share the information we have gathered
from our long experience in the Test & Measurement market. We also
aim to offer interesting new business opportunities for our customers.
We have selected the speakers for the Workshop from among some of the key
experts in SDH/SONET, Gigabit Ethernet, and the installation and maintenance
of these technologies.
 more
...
next
events
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QoS Provision in Ethernet
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MAIDENHEAD (UK) Jul 28th. Ethernet and IP are essential
parts of next-generation carrier networks. However, these technologies
have to adapt to meet the requirements of new applications, such as real-time
voice and video.
The native best-effort delivery is not sufficient for these applications,
and some kind of Quality of Service (QoS) and Class of Service (CoS) must
be guaranteed, for example by means of:
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Adhering to the parameters specified in the Service Level Agreement (SLA)
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Traffic engineering, to make sure that all the customers and services have
a specific service level to meet the QoS parameters
An important goal for next generation packet technologies is to ensure
a specific QoS over packet-switched networks. Amongst other things, QoS
allows real-time applications to make the most efficient use of network
bandwidth.
The requirements for the quality of service naturally depend on the
application. For instance:
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Video-conferencing and other interactive applications are sensitive to
delay and jitter.
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Streamed multimedia is less sensitive to delay and relatively insensitive
to packet loss.
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Data applications are not sensitive to delay and jitter, but packet loss
may be a critical factor.
QoS is based on the parameters defined in the subscriber’s SLA. These parameters
can be divided into two groups:
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Bandwidth profile parameters are the characterization of the traffic source
and subscriber’s bandwidth.
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Service parameters are the parameters that specify the performance of traffic
in accordance with the profiles.
The problem is that native Ethernet, as a best-effort technology, does
not provide QoS. To maintain QoS it is necessary to perform certain operations,
such as traffic marking, traffic conditioning and congestion avoidance.
Native Ethernet frames do not have QoS fields, which is why additional
structures must be supported at Layer 2 (MAC level) and Layer 3 (IP level).
Trend’s Aurora Tango and Victoria Combo can help to offer CoS and QoS
for Ethernet. Both testers can generate traffic with bandwidth profiles
and flows with specific labels (IEEE 802.1Q/p CoS and IP ToS/DSCPs). They
can also measure QoS parameters, such as delay, jitter and frame loss.
What’s more, Aurora Tango and Victoria Combo complement each other.
Aurora Tango performs measurements at Ethernet interfaces, whilst Victoria
Combo does this at SDH/SONET interfaces.
Furthermore, the QoS traffic generated by Aurora Tango can be ‘understood’
by Victoria Combo, and vice versa. This allows the testing of QoS measurements
from native Ethernet interfaces and Ethernet over SDH/SONET interfaces
as well.
Those who need to set up, test and monitor Ethernet networks will be
glad to know that these tasks can be made a lot easier with Trend’s Aurora
Tango and Victoria Combo platforms
More information:
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MUMBAI (India) Jun 21th. The Asian market is growing
faster than any other communications market in the world, and it is clear
that China and India are leading this growth.
Both countries have a very large population, and this, combined with
a desire to improve their telecommunications infrastructure, makes these
markets so dynamic and rapidly-growing.
Just to give some examples, Asia is world number one in the number of
mobile phones and broadband subscribers, and there is a constantly growing
need for many other telecommunications services as well.
Anybody who is somebody in the communications business will also be
a strong player in the Asian market, and Trend is no exception.
Trend is already a well-known player in the Indian market,  and
now we are aiming to increase our Chinese market share, with the same philosophy
that underpins all our actions: quality counts, and competition is a positive
challenge.
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 Trend
has recently opened a new office in Beijing, and we are actively participating
in different telecom events in China and elsewhere in Asia. Our sales channel
is also growing continuously to meet the market demands of this huge area
that is full of attractive business opportunities.
To find out more about Trend’s activities in Asia, check out these stories:
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MAIDENHEAD (UK) July 9th.
Trend’s ALT2000, the popular copper qualification tester with TDR,
now has some interesting new features.
The new software version 6.03 makes it even better. ALT2000 now includes
Automatic Single-Ended Insertion Loss, as well as several enhancements
to ALTAIR, the PC software package.
ALT2000 is a product that has an on-going development roadmap, because
copper testing is now more critical than ever. There is a growing number
of broadband services that use higher bandwidths on the existing copper
wires, and efficient testers are needed to make sure that reliable service
can be offered at these higher data rates.
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The copper pair that operates perfectly for POTS and ISDN
might not be all that suitable for high-speed xDSL services, and this is
where ALT2000 comes in.
It is an essential tester for pre-installation and in-service qualification,
and with the ALTAIR PC software its possibilities can be even further expanded.
More information:
Software
v.6.03
Web
page
Brochure
Presentation
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| SHANGHAI (China), June 20th. Trend’s winning
test and measurement solutions were on show at ELE/PT Comm China, 22-25
June.
Trend participated the show together with IDEAL INDUSTRIES, to offer
the most complete product line available in the market.
Trend Communications and IDEAL INDUSTRIES attended ELE/PT Comm, one
of the largest ICT events in China. The two companies were showcasing their
unrivalled solutions for telecomm/datacomm professionals.
Trend’s and IDEAL’s products complement each other, and the two companies
were showcasing what’s probably the most complete product line in the industry.
Trend’s product portfolio covers solutions that range from hand-held
field testers to sophisticated remote monitoring systems. At ELE/PT Comm
Trend’s revolutionary Aurora Tango and Victoria Combo platforms were playing
the leading role.
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Visitors to the Trend/IDEAL stand were amazed at the small
size of Aurora Tango, especially when they realised what this pocket-size,
feature-packed tester can do; E1, Gigabit Ethernet, ADSL, SHDSL and ISDN
— all this in one light, yet robust field tester.
Victoria Combo’s presence did not remain unnoticed, either. Its technical
capacity combined with its 10.4-inch SVGA colour touch-screen impressed
one visitor so much that he said: “Wow! This is like a portable head office
for test & measurement!”
His colleague, in charge of a field team, added: “My guys can do miracles
with this tester.” — Miracle or not, it’s true: Victoria Combo is a fully
customisable solution for testing Next Generation SDH/SONET networks, up
to 2.5 Gbit/s. And yes, we admit: it is an impressive piece of equipment.
More information:
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CommunicAsia 2005 in Singapore
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| SINGAPORE, June 14th. CommunicAsia is an event
that every year brings together all the important players in the
Asian telecommunications market.
This year, there were approximately 2 000 exhibitors from more than
50 countries. The event, together with the subshows NetworkAsia2005,
MobileCommAsia2005 and SatComm2005 attracted more than 60 000 visitors
this year, and about half of them came from overseas.
Trend Communications attended this international event together with
IDEAL INDUSTRIES, INC. The two companies have adopted the strategy of showing
and working together to offer the widest possible selection of products,
and to give the best possible service to both new and existing customers.
As Next Generation Networks, Voice-over IP and 3G were some of the
most important themes for the show this year, Trend was showcasing its
state-of-the-art solutions for Next Generation SDH/SONET, Gigabit Ethernet
and E1, with the Aurora Tango and Victoria Combo platforms in the spotlight. |
Aurora Tango is a modular, extremely light-weight PDA-based tester
that can test up to five different technologies: E1, Gigabit Ethernet,
ADSL, SHDSL and ISDN.
Aurora Tango’s ‘big sister’, Victoria Combo, is a fully customisable
solution for testing Next Generation SDH/SONET networks up to 2.5 Gbit/s,
with all the features needed to speed up the installation and maintenance
of new data-aware SDH networks.
If you missed CommunicAsia this year, perhaps you should visit next
time and check out our latest achievements. And you can consider that this
is a promise: our box of tricks will be full of ground-breaking solutions
next year as well.
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Bandwidth management with LCAS
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| TERUEL (Spain), July 9th. Link Capacity Adjustment
Scheme (LCAS), is the technology that enables flexible bandwidth
provision and management of NG SDH/SONET.
The Link Capacity Adjustment Scheme (LCAS), standardized by the ITU-T
as G.7042, was designed to manage the bandwidth allocation of a Virtually
Concatenated (VCAT) path.
LCAS has demonstrated that it has other important applications as well.
One of the most important is a new method to implement resiliency in
SDH/SONET networks. LCAS resiliency is suitable especially for
configurable packet transport over SDH/SONET networks. LCAS can add
and remove members of a live VCAT channel.
LCAS applications are of special interest in networks using the statistical
multiplexing gain.
VCAT bandwidth allocation
LCAS enables the re-sizing of the VCAT pipe in use when it receives
an order from the NMS to increase or decrease the size. It can also
automatically remove a specific VCG member, which is failing and add
it again when it is recovered so that the VCAT connection is always kept
alive.
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Network resilience
Resilience probably is the main LCAS application implementing a strategy
known as diversification. It consists of sending traffic using several
paths. In the case of a partial failure of one path, LCAS reconfigures
the connection using the members still up and able to continue carrying
traffic.
Asymmetric configurations
It is important to note that LCAS is a unidirectional protocol that
is executed independently at the two ends. This feature allows the provision
of asymmetric bandwidth between two NG nodes.
Cross-domain operation
LCAS eliminates the slow and inefficient provisioning process of legacy
SDH/SONET networks. In particular a service crosses several operators (for
example international links), so it is necessary to coordinate more
than one configuration centre.
More Information:
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| TrendCommunications |
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Trend Communications is a global supplier of hand-held
test equipment and monitoring systems to the communications market. Our
solutions cover any business based on Broadband Access, Voice Services,
Datacomm, Network Management, Photonic Transmission, Metropolitan, Mobile
and Third Generation Networks.
Trend Communications is part of IDEAL Industries Inc., headquartered
in Illinois, USA.
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Trend
’s Victoria testers have once again gained success; this time in a tender
organized by BSNL in India.
