FEATURES AND SPECIFICATIONS·
- SDH transmission solution for access
networks, expanding local loops to 60 km / 37 miles
- Digital cross-connection for up to 960
timeslots on copper, fiber or HDSL links
- Programmable DS0 non-blocking
cross-connection
- E1/T1 conversion supports A-law/µ-law and
signaling conversion
- Transmission of T1 traffic over E1.
Complies with ITU-T G.802
- Broadcast support
- Flexible configuration as an STM-1
terminal or an ADM (add&drop multiplexer) with full cross-connectivity and
PDH interfaces
- Supports centralized management, including
configuration, service, performance, security and fault management
- Integrated management system supporting
RAD's Multiservice Access Platform (MAP) equipment
- Telnet support
- Separate dial-in/dial-out port
- Accurate timing transfer to access
equipment
- Optional redundancy for common logic and
power supply
- 1:1 tributary protection switching
- Traffic grooming into E3/DS3 uplinks
- Inverse multiplexing module supports up to
8 E1/T1 trunks
- RADview management system on PC or UNIX
(HP OpenView) platform
- Local Loop Access solution with LTU or CSU
options for extended range, built-in fiber optic, or HDSL modems
- TFTP support for common logic software
upgrade
- Test and monitoring at any port
- DXC-STM-1 is available with standard G.703
or optical short/long haul aggregates.
- 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 (DACS)
and service multiplexers.
- DXC-STM-1 is fully compatible with 34
Mbps and 45 Mbps PDH signals, SDH microwave radio relays and existing
SDH infrastructure.
- DXC-STM-1 supports the whole 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.
- DXC-STM-1 facilitates centralized
management of the access network. Centralized management combines the
powerful RADview network management application in the SDH transmission
layer with the access equipment manager of a specific application. The
access equipment manager 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 DXC-STM-1 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.
EXPANSION MODULES -
ADM SECTION
The interface capacity of the DXC-STM-1 can be expanded from its basic 21 x
2 Mbps configuration of the ADM section by adding the following expansion
modules (ordering options):
- R-STM-1E/EXT42 expands the ADM
capacity from 21x2 Mbps (21 E1) to 63x2 Mbps (63 E1) tributary interfaces.
- R-STM-1E/EXT34 provides three E3
(3x34 Mbps) tributary interfaces.
- R-STM-1E/EXT45 provides three T3
(3x45 Mbps) tributary interfaces.
I/O MODULES -
CROSS-CONNECT SECTION
DXC-STM-1 supports the following plug-in interface modules supporting n x
56/64 kbps, T1, E1, T3 or E3 transmission over copper, fiber or HDSL.
- DT1/DT1B, the two-port T1 interface
modules, support both D4 or ESF framing formats and AMI line code (zero
suppression is selectable for either Transparent, B7ZS or B8ZS). For long
range applications, a CSU option is available. The DT1B version provides
BERT, loopback per timeslot, and 1:1 redundancy. DT1/DT1B is available
with both copper and fiber-optic interfaces.
- DE1/DE1B, the two-port E1 interface
modules, support both 2 and 16 frames per multiframe (256N and 256S,
respectively), TSO multiframe with CRC-4 and HDB3 line code. For long
range applications, a CSU option is available. The DE1B version provides
BERT, loopback per timeslot, and 1:1 redundancy. DE1/DE1B is available
with both copper and fiber-optic interfaces.
- DT3, the single-port T3 interface
module, supports multiplexing of up to 28 T1 channels into a T3 frame with
C-bit parity per ANSI T1.404 or M13 framing options. DT3 is available with
both copper and fiber-optic interfaces.
- DE3, the single-port E3 interface
module, supports multiplexing of up to 16 E1 channels into an E3 frame per
ITU-T G.751. DE3 is available with both copper and fiber-optic interfaces.
- DHS, the two-port n x 56/64 kbps
data module, provides two high speed synchronous data channels. Each
channel is independently selected for either V.35 or V.11/RS-422
interface. Each channel can support bit rates of n x 56 kbps or n x 64
kbps, where:
n = 1 to 24 for T1,
n = 1 to 31 for E1.
- DIM, the digital inverse
multiplexer module, working in conjunction with DE1, DE1B, DT1, DT1B,
D4E1/D8E1, D4T1/D8T1, DHL/E1, DHL/E1/2W, DHL/T1, DE3 or DT3 interface
modules, enables DXC to function as an inverse multiplexer. DIM allows
transmission of high speed signals over up to eight E1/T1 lines. This is
achieved by breaking down the high speed signals over the multiple E1/T1
lines and routing these signals over different paths or facilities, while
ensuring transmission integrity.
- DHL/E1, the two-port HDSL module,
uses HDSL technology to extend the range of the DXC up to 4.0 km (2.5
miles) over 24 AWG (0.5 mm), 4-wire copper cable. It works opposite other
RAD products with HDSL technology (such as HCD-E1, HTU-E1, HTU-E1L, HTU-2
and Megaplex-2100/2200 with HDSL modules). DHL/E1 complies with ITU-T
G.704 and ETSI ETR-152 standards.
- DHL/E1/2W, the two-port HDSL
module, uses HDSL technology to extend the range of the DXC up to 3.0 km
(1.9 miles) over 24 AWG (0.5 mm), 2-wire copper cable. It works in
conjunction with the HCD-E1/2W, extending the range of the traditional
subscriber loop while saving on the copper infrastructure. DHL/E1/2W
complies with ITU-T G.704 and ETSI ETR-152 standards.
- DHL/T1, the two-port HDSL module,
uses HDSL technology to extend the range of the DXC up to 4.8 km (3.0
miles) over 24 AWG (0.5 mm), 4-wire copper cable. It works opposite other
RAD products with HDSL technology (such as HTU-T1, HTU-T1L and
Megaplex-2100/2200 with HDSL modules). DHL/T1 complies with ITU-T G.704
and ANSI T1E1.4.
- D4E1/D8E1, the four or eight-port
E1 interface modules provide 4 or 8 E1 links over copper cable supporting
E1 or fractional E1 rates.
- D4T1/D8T1, the four- or eight-port
T1 interface modules provide 4 or 8 T1 links over copper cable supporting
T1 or fractional T1 rates.
- D8U, the 8-port ISDN "U" interface
module, provides independent ISDN "U" ports, each supporting 2B + D
channels, for total payload data rate up to 128 kbps per port
ORDERING
DXC-STM-1-3/UTP/R/48/FC13L
DXC-STM-1-3/UTP/R/AC/FC13L
DXC-STM-1/UTP/R/AC/FC13L
APPLICATION
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