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RAD R-STM-1/R-STM-1E
STM-1 Synchronous Digital Multiplexer |
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- R-STM-1E is a
multiplexer, based on Synchronous Digital Hierarchy
(SDH) transmission cores for the local loop. It
provides telecom operators with the decisive
benefits needed to achieve a high level of service
and maximized revenues.
- R-STM-1E can be
deployed in access nodes as a terminal multiplexer
(TM) or add & drop multiplexer (ADM). It enables
expansion of the local loop up to 100 km / 62 miles,
creating a transmission layer fully compatible with
regional and national SDH networks.
- SDH transmission
supports a full range of access systems, including
Remote Subscriber Units (RSUs), Digital Line
Carriers (DLCs), Passive Optical Networks (PONs),
Digital Cross-Connect (DXC 1/0) and service
multiplexers.
- R-STM-1E is fully
compatible with 34 Mbps and 45 Mbps PDH signals, SDH
microwave radio relays and existing SDH
infrastructure.
- R-STM-1E supports a
full range of SDH network topologies:
- Point-to-Point
- Chain
- STM-1 ring / folded
ring
- STM-4/16 ring /
STM-1 structured ring-star and ring-ring.
- The interface capacity
of R-STM-1E can be expanded from its 21x2 Mbps basic
configuration to any of the following:
- 63x2 Mbps
- 3x34 Mbps
- 3x45 Mbps.
- The compact size and
low power consumption of R-STM-1E allow easy rack or
wall installation on customer premises, in
telecommunications buildings or in outdoor cabinets.
- R-STM-1E is also
available in a DXC integrated box featuring both DXC
I/O cross-connect and SDH ADM capabilities.
- R-STM-1E facilitates
centralized management of the access network.
Centralized management combines both the powerful
RADView and the SDH transmission layer network
management applications. The centralized network
management application uses embedded management
channels for communication with remote access
equipment. Centralized management enables the
building of flexible, responsive and optimized SDH
access networks to fit any customer's needs.
- The 2 Mbps output
signals of R-STM-1E can be resynchronized by the
multiplexer clock. In addition, pointer
justification events can be filtered out,
eliminating phase hits. This creates an accurate
signal, clear of phase hits and suitable for
synchronization of access equipment. Since the SDH
network is usually synchronized by the national
synchronization network, this accurate timing is
transferred to the access equipment.
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