|
|
ATM
Products
ATM
Access Device
ATM
Aware Network Termination Device
ATM
Converter: Fiber to UTP/STP
ATM
Converter: Media Repeater
ATM
Converter: Data Rate & Media Converter
ATM
Demarcation Device
ATM
Internetworking & Network Termination Device
ATM
Mini Multi-Access Unit (E1)
ATM
Mini Multi-Access Unit (T1)
ATM
Multiplexer (E1)
ATM
& Multiplexer (T1)
Definition
of ATM & SMDS
-
ATM:
(Asynchronous Transfer Mode)
An international ISDN high-speed, high-volume, packet-switching
transmission protocol standard. ATM uses short, uniform, 53-btye
cells to divide data into efficient, manageable packets for
ultrafast switching through a high performance communications
network. The 53-byte cells contain 5-byte destination address
headers and 48 data bytes. ATM is the first packet-switched
technology designed from the ground up to support integrated voice,
video and data communications applications. It is well suited to
high speed WAN transmission bursts. ATM currently accommodates
transmission speeds from 64 Kbps to 622Mbps. ATM may support gigabit
speeds in the future.
SDMS:
(Switched Multimegabit Data Service)
SMDS is a connectionless, cell-switched data
transport service that offers total end-to-end applications
solutions. With SMDS, organizations have the flexibility they need
for distributed computing and bandwidth-intensive applications. At
the same time, because SMDS supports both existing and emerging
technologies, it provides the scalability organizations need to
support the applications of the future.
Used to interconnect multiple node LANs and WANs through the public
telephone network, SMDS eliminates the need for carrier switches to
establish a call path between two points of data transmission.
Instead, SMDS access devices pass 53-byte cells to a carrier switch.
The switch reads addresses and forwards cells one-by-one over any
available path to the desired endpoint. SMDS addresses ensure that
the cells arrive in the right order. The benefit of this
connectionless "any-to-any" service is that it puts an end
to the need for precise traffic-flow predictions and connections
only between fixed locations. With no need for a pre-defined path
between devices, data can travel over the least congested routes in
an SMDS network, providing faster transmission, increased security
and greater flexibility to add or drop network sites.
|
