Many services running on modern digital telecommunications networks require accurate synchronization for correct operation. For example, if switches do not operate with the same clock rates, then slips will occur and degrade performance. Telecommunication networks rely on the use of highly accurate primary reference clocks which are distributed network wide using synchronization links and synchronization supply units.
This book is the product of over 15 years of working with RTT, delivering strategic
technology design programs for the cellular design community. This has included pro-
grams on AMPS/ETACS handset, base station, and network design in the early to
mid-1980s; programs on GSM handset, base station, and network design from the late
1980s to mid-1990s onward; and, more recently, programs on 3G handset, Node B, and
ADC’s ThinMux™ product family helps carriers build today's access networks that can easily
adapt to meet tomorrow's needs. Only the ThinMux products provide a single platform to
encompass many universal standards (SONET/SDH, DS3, T1/E1). As bandwidth requirements
increase and network technologies change, ThinMux is quickly and easily upgraded by
replacing the multiplexer card within the chassis. Complete flexibility in delivering unique
T1/E1 (or mixed) services without additional provisioning, servicing, inventory or training is
possible through the one time ADC ThinMux investment....
Cognitive maps have emerged as an important tool in modeling and decision making.
In a nutshell they are signed di-graphs that capture the cause/effect relationships that
subject matter experts believe exist in a problem space under consideration. Each node in
the map represents some variable concept.
The HiGain HXU-359 STS-1 multiplexer is a cost-effective
SONET access platform that enables direct insertion of
DS1s or E1s onto any SONET network via an economical
STS-1 interface. This environmentally hardened unit enables
installation in a co-location cage or remote cabinet.
The HXU-359 condenses SONET technology into the
highest service density multiplexer that minimizes space,
power and heat dissipation requirements. The HXU-359
offers a mixed T1/E1 service of up to 28 DS1s or 21
E1s or any valid combination onto a single high-speed
STS-1 network interface....
Wireless communications is one of the most active areas of research over the
past and the current decades. In fact, the demand for wireless services has been
changing from the regular voice telephony services to mixed voice, data, and
multimedia services over the wireless media. Since the mid-1990s, the wireless
industry has been advancing at an incredible speed. For example, the 2G cellular
systems (such as GSM, D-AMPS, and IS-95) have significantly improved
the spectral efficiency and network capacity to support wireless telephony
To overcome the limitations of conventional storage, Oracle Exadata Storage Servers use a
massively parallel architecture to dramatically increase data bandwidth between the database
server and storage. Innovative technologies such as Exadata Smart Scan, Exadata Smart Flash
Cache, and Hybrid Columnar Compression enable Exadata to deliver extreme performance for
everything from data warehousing to online transaction processing to mixed workloads.
The Elastomeric Alloy (EA) materials based on polypropylene (PP) and Vietnam waste Rubber Powder (RP) has been prepared in internal mixer of Haake in melting state with peroxide initiator. Dynamically stabilizing process at presence of radical donor and acceptor systems has leaded to form chemical bonds on the surface between two phases of surspending rubber powder and PP matrix and then to form intermediate phase surrounding Rubber Particles and making EA higher dense than that of materials by simple mixing RP and PP without networking.