Specifications

C R O S S C O N N E C T S
104
RAD Data Communications 2009 Catalog
DXC-4
Fractional E1/T1 Groomer
compact, standalone DXC-4 is widely deployed
by cellular, wireless and leased line operators to
optimize bandwidth utilization or to maximize
services by separating and redirecting TDM
traffic according to type.
Alternatively the DXC-4 E1/T1 groomer can
groom DS0 timeslots including the signal
information into a single E1/T1 link. The DXC-4
E1/T1 grooming solution complements RAD’s
DXC family of cross connects and can also be
deployed on any E1/T1 device.
Four or eight ports
The scalable DXC-4 can be ordered with four or
eight ports to support four or eight link
channels. The DXC-4 E1/T1 grooming device
supports user-selectable E1 or T1 links. Internal
LTU/CSU is included. The DXC-4 is ETSI-rack
installation ready.
The DXC-4 E1/T1 grooming solution has an
SNMP agent. A wide range of management
options such as ASCII terminal, Telnet and
RADview are available via two NMS ports.
The DXC-4 is a compact half 19-inch non-
modular solution. The DXC-4 E1/T1 grooming
solution has an optional redundant power
supply.
• Grooms fractional links onto one E1/T1
link
• Four or eight E1/T1 ports
• Simple installation and operation
• Compact, half 19-inch solution
• SNMP management
DXC-2
E1/T1 Converter and Timeslot Cross Connect
DXC-2
E1 T1
ADM
SDH
Backbone
SONET
Backbone
ADM
BTS
BSC
DXC-4
FE1/E1
FT1/T1
FE1/E1
FT1/T1
E1s
T1s
FE1/E1
FT1/T1
BTS
For latest updates visit www.rad.com
The DXC-4 fractional E1/T1 groomer offers reliable
E1/T1 grooming of TDM traffic for up to eight
fractional E1/T1 lines onto a single E1/T1 link,
saving costs on leased lines and offering quick
payback.
Cost-effective grooming for mobile operators
The DXC-4 fractional E1/T1 groomer offers a cost-
effective solution for backhauling of TDM traffic
from base stations (BTS) to cellular networks. The
• Converts between E1 and T1 data and
signaling
• Configurable A-law/µ-law and signaling
conversion; or transparent conversion
at 64 kbps timeslot level
• Controlled slip for buffer overflow/
underflow
• Soft-selectable to comply with ITU Rec.
G.802, Annex 2
• Optionally available with built-in LTU
(E1) or CSU (T1)
can also be ordered with two ports of the same
type (i.e., two E1 or two T1 ports). An optional
built-in LTU (E1) or CSU (T1) is available on
either port.
A user-programmable connection table defines
the connection of any 64 kbps incoming
timeslot to any outgoing timeslot. The DXC-2
can also perform the required A-law/µ-law and
signaling conversion in compliance with E1 and
T1 standards. The E1-to-T1 conversion method
can be soft-selected to comply with ITU G.802.
Diagnostic loopback support for E1/T1 interfaces
includes loopback towards the local or remote DTE.
Several clock modes cover all timing possibilities
for the E1/T1 interface. These include internal
clock and loopback timing for either the E1 or
T1 interface.
The E1 interface complies with ITU G.703,
G.704, G.732, and G.823, and supports
both two and 16 frames per multiframe with or
without CRC-4. Line code is HDB3.
The T1 interface complies with AT&T TR-62411
and ANSI T1.403 requirements, and supports
both D4 or ESF framing formats and AMI line
code. Zero suppression is selectable between
transparent transmission, B7ZS or B8ZS.
Setup, control and diagnostics can be performed
via the front panel or an ASCII terminal.
The DXC-2 E1/T1 converter and timeslot cross
connect enables conversion between one E1
signal and one T1 signal (24 timeslots). For
applications requiring timeslot swapping between
two devices operating at the same speed, the unit
For latest updates visit www.rad.com