 In
today's market the most important challenge for SANTEC
Communications is to provide: reliable, scalable,
flexible, secure and easy to maintain - Networking Solutions
to our customers.
VSAT - Very Small Aperture Terminal
*
By partnering with
MCI Inc. and VSAT equipment providers, SANTEC
Communications provides solutions for private networks
business enterprises offering high-speed satellite access
for data, voice and video applications including VPN (virtual
private networks), LAN/WAN internetworking and voice-over-IP
(VoIP).
We provide complete solution proposal and hardware recommendations
including the following:
· Design of network solutions
· Installation and integration
· Service and maintenance
· Capacity Planning
· Provisioning
VSAT Topology:
Mesh Network Topology:
consist of remote VSAT nodes which communicate with each other
via a single relay link through the satellite. This topology
reduced the time lag between the sending and receiving of
traffic. Mesh topologies are ideally suited for applications
that are time sensitive.
Star Network Topology:
Star networks are preferred when a
large percentage of the traffic terminates at a designated
earth station where all traffic from and to remote earth stations
is routed via the central HUB station. The advantages of a
star network topology are:
- The remote earth stations are less expensive
to build.
- The satellite power utilization
can be minimized by using a relatively large Hub antenna.
Hybrid Network Topology:
Star and mesh topologies can be combined
in a variety of ways to create a hybrid network. Some of the
sites can be configured as a HUB in a star network, while
the remaining sites are configured as a mesh network. VSAT
can be alternatively part of both: a star network and a mesh
network.
Spectrum:
C-Band
C-Band ("compromise" band)
is a portion of electromagnetic spectrum in the microwave
range of frequencies ranging from 4 to 6 GHz.
C-Band is primarily used for satellite communications, normally
downlink 3.7-4.2 GHz horizontal polarization, uplink 5.9-6.4
GHz vertical polarization, usually 24 36 MHz transponders
on board a satellite.
The applications include full-time satellite TV networks or
raw satellite feeds. Typical antenna sizes on C-Band capable
systems range from 7.5 to 12 feet (2 to 3.5 m).
C-Band is highly associated with TVRO (Television receive-only)
satellite reception systems or "big dish" systems.
Larger antennas and more expensive receivers, C-Band usually
provides better video quality and is less affected by rain
attenuation than the Ku-band.
K-Band
K-Band is a portion of the electromagnetic
spectrum in the microwave range of frequencies ranging between
12 to 63 GHz. K-Band, between 18 and 26.5 GHz, is absorbed
easily by water vapor (H2O resonance peak at 22.24 GHz, 1.35
cm). The letter K comes from the German language word kurz,
meaning "brief" or "short".
- Ku-Band
Part of the electromagnetic spectrum used predominantly for
fixed satellite communications. It uses frequencies in the
10-17GHz range.
- Ka-Band
Part of the electromagnetic spectrum used for fixed and mobile
satellite communications. It uses frequencies in the 18-31GHz
range.
L-Band
L-Band (20-cm radar long-band) is
a portion of the microwave band of the electromagnetic spectrum
ranging roughly from 0.39 to 1.55 GHz. It is used by some
communications satellites, and by terrestrial Eureka 147 digital
audio broadcasting. In the U.S., the L band is held by the
U.S. Military for telemetry, thereby forcing digital radio
to in-band on-channel (IBOC) solutions. DAB is typically done
in the 1452-1492-MHz range as in Canada, but other countries
also use VHF and UHF bands.
The Global Positioning System carriers are in the L-Band centered
at 1176.45 MHz (L5), 1227.60 MHz (L2), 1381.05 MHz (L3) and
1575.42 MHz (L1) frequencies.
S-Band
The S band, or 10-cm radar short-band,
is the part of the microwave band of the electromagnetic spectrum
ranging roughly from 1.55 to 5.2 GHz. It is used by weather
radar and some communications satellites.
In the U.S., the FCC approved Digital Audio Radio Satellite
(DARS) broadcasts in the S- Band around 2.3 GHz, currently
used by Sirius Satellite Radio and XM Satellite Radio.
V-band
The V-band of the electromagnetic
spectrum ranges from 50 to 75 GHz. The V-band is not heavily
used, except for millimeter wave radar research and other
kinds of scientific research.
X-Band
The X-Band (3-cm radar spot-band)
of the microwave band of the electromagnetic spectrum roughly
ranges from 5.2-10.9 GHz. It is used by some communications
satellites and X-Band radar.
NOTE:
Microwave
range of Super High Frequency (SHF) band between 3 GHz and
30 GHz is designated by Federal Communications Commission
(FCC).
NETWORK MANAGEMENT Solutions
*
Network Management is a service
provided by SANTEC
Communications thru our business partners and it
uses a variety of tools, applications and devices to assist
network managers in monitoring and maintaining networks.
The most common functions of Network
Management are:
a. Network Performance Management:
measures and make available various aspects of network performance
so the inter-network performance variables like throughput,
user response times and line utilization can be maintained
at an acceptable level.
b. Network Configuration Management: monitors
network operations and system's configuration in order to
track and manage various versions of hardware and software
of the entire network. Each network device has a variety of
hardware and software version information associated with
it.
c. Network Accounting Management: measures
network utilization parameters so that an individual or group
of uses on the network can be regulated appropriately in order
to minimize network problems and maximizes the fairness of
network access across all users.
d. Network Fault Management: function is
to detect, log, notify users of, and fix network problems
in order to keep the network running effectively. Because
faults can cause downtime or unacceptable network degradation,
fault management is perhaps the most widely implemented.
e. Network Security Management: function
is to control the access of an individual or group of uses
to network resources according to local guidelines so that
sensitive information cannot be accessed by those without
appropriate authorization. Network Security Management is
partitioned in security management subsystems and authorized
or unauthorized an individual or group of uses the access
to sensitive network resources.
Network Management provides
valuable information (proactively or reactively) to all management
entities within the network management systems (NMS) about
day-to-day network operation management, network capacity
planning and strategic network growth planning.
Network Management Services are using a variety of network
management technologies, protocols, and platforms.
Network Management Protocols include: the Simple Network Management
Protocol (SNMP) and Common Management Information Protocol
(CMIP).
The Simple Network Management Protocol (SNMP) is a distributed-management
application layer protocol that facilitates the exchange of
management information between network devices. SNMP is part
of the Transmission Control Protocol/Internet Protocol (TCP/IP)
protocol suite.. SNMP enables network administrators to manage
network performance, find and solve network problems, and
plan for network growth.
An SNMP-managed network must account for and adjust to incompatibilities
between all managed devices and consists of three key components:
1. Managed devices
2. Agents
3. Network-Management Systems (NMS).
A Managed Device is a network node that contains
an SNMP Agent and that resides on a managed network. Managed
devices like routers, access servers, switches, bridges, hubs,
computer hosts, or printers, can collect and store management
information and make this information available to NMS using
SNMP (SNMPv1 or SNMPv2). SNMPv1 supports only 32-bit IP addresses,
but SNMPv2 can support other types of addresses as well.
An Agent is a network-management software
module that resides in a managed device. An Agent has local
knowledge of management information and translates that information
into a form compatible with SNMP.
An NMS (Network-Management Systems) executes
applications that monitor and control managed devices. NMS
provide required resources for network management systems
and exist on any managed network.
ELECTRONIC
ENCLOSURE Solutions *
SANTEC
Communications provides innovative, cost-effective
enclosure and housing solutions for telecommunications and
data networks applications including Climate Controlled and
Seismic Type Zone 4 technologies.
- All Units
are designed for installing patch panels, active components,
servers, communication equipment, enhancing system administration
and CPUs maintenance and also fro guaranteeing the extra
ventilation required for special environmental conditions.
- All Units
are designed for accessibility and convenience for the maintenance
and repair processes of the network equipment, battery back-up
systems and accessories.
- All Units
can be accessed by the front, rear and both the sides and
are standard equipped with 2 pairs of 19" sliding vertical
rails, one pair of side panels with lock, tinted glass front
door with swivel handle lock, adjustable legs, rear panel
with module for cable entry, GND kit, and mounting brackets.
- All Units
offers the widest range of accessories for positioning and
connecting different type of network equipment in an efficient
manner, for reducing the integration time and for simplifying
field maintenance of complex electronic equipment.
UPS
/ BATTERY BACK-UP Solutions *
SANTEC
Communications offers the broadest range of Uninterruptible
Power Supplies (UPS's), Battery back-up, 3 Phase UPS's, Surge
Protection and Power- Conditioning solutions in the industry,
in Off-line, On-line and Line-interactive topologies. Our
Solutions includes 24 x 7 Service and Support
with 24-hour Customer Response Center Technical Staff form
our business partners and can provide power network protection
for multiple sites throughout the world.
1. Small UPS and Surge Suppression
for business-critical equipment from a single PC to large
network servers and peripherals.
2. Facility Surge Suppression
for a wide range of transient voltage surge suppression requirements
with numerous applications from Large Scale Surge Suppression
to Specialty Surge Suppression.
3. Large UPS's and Power Conditioning
to provide protection for large telecommunication applications.
4. Precision Air Conditioning and
Fluid Cooled Systems to provide spot-cooling in a
control room for total protection of a traditional raised
floor data center and meeting the needs of specialized equipment
such as remote telecommunication facilities.
5. Environmental Enclosure Systems
with power protection and battery back-up -build in a single
flexible package.
6. Monitoring Software
with centralized or remote network monitoring and control
capabilities.
7. DC Power Units
designed for modularity and easy servicing, to meet the needs
of DC-dependent telecommunication equipment.
* Please see “Packaged
Services”
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