Specifications

Cross-Connect
Cross-Connect
s / Service Concentrators
s / Service Concentrators
3
3
T
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DXC Access Concentrators
The DXC family of modular Multiservice Access Nodes
provides non-blocking cross connection for up to 960
DS0s and up to 120 fractional E1/T1 ports. DXC
supports built-in local loop solutions. Plug-in interface
modules supporting n x 56/64 kbps, E1, T1, E3 or T3
transmission over copper, fiber or HDSL are available.
Also available is the DIM module which provides
inverse multiplexing capabilities of up to 8 x E1, 8 x T1.
DXC-30 supports up to 120 E1, T1 or up to 30 n x 56/64
kbps ports. DXC-10A supports up to 40 ports, while the
smaller DXC-8R supports up to 32 ports. A user-programmable connection table connects any incoming 64 kbps timeslot to any
outgoing 64 kbps timeslot. Support is provided for drop & insert and broadcast. Cross-connection of n x 56 kbps or n x 64 kbps
channels is implemented by placing the data onto an E1 or T1 frame, using only the required number of timeslots. This provides
Fractional CSU/DSU functionality. 1:1 protection through dual cable at the port level (same module) ensures less than 50 msec link
redundancy. Y-cable redundancy between modules protects the service from hardware failure. Channel relocating and half duplex
conferencing are also supported.
DXC Family
MODULES
DT1, the two-port T1 interface module, 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 for either Transparent, B7ZS or
B8ZS). For long range applications, a CSU option is available. DT1B version
with BERT and loopback per timeslot is also available
DE1, the two-port E1 interface module, complies with ITU-T Rec. G.703,
G.704, G.732, G.736 and G.823, and supports both 2 and 16 frames per
multiframe (256 N and 256 S respectively), TS 0 multiframe with CRC-4 and
HDB3 line code. For long range applications, an LTU option is available.
DE1B version with BERT and loopback per timeslot is also available.
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 either coax or fiber 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 RS-422/V.11 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.
DFO, the two-port Fiber Optic Link module, enables the DXC to connect
directly to a fiber optic network, eliminating the need for an external fiber optic
modem or repeater. DFO operates with different grades and sizes of
single/multimode fiber optic cable and is available with LED and laser diode
optical interfaces.
Setup, control and diagnostics can be performed out-of-band via a V.24 supervisory port or optional Ethernet management port using
an ASCII terminal with SLIP or PPP protocols. A built-in SNMP agent enables remote management for configuration and diagnostics
of remote devices (up to 30 remote locations) using TS 0, a dedicated timeslot of E1/T1 trunk or Telnet.
Equipment Order Number
DXC-30E RDXC30E
DXC-30 115/230v RDXC30
DXC-10A-1/115v RDXC10A
DXC-10A-1/230v RDXC10A230
DXC-8R/48vdc RDXC8R48v
DXC Dual T1 Module RDXCMT1
DXC Dual T1 Module with CSU RDXCMT1c
DXC Dual E1 Module RDXCME1
DXC Dual E1 Module with LTU RDXCME1c
DXC 4xT1 Module RDXCMD4T1
DXC 8xT1 Module RDXCMD8T1
DXC 4xE1 Module RDXCMD4E1
DXC 8xE1 Module RDXCMD8E1
DXC T3 Module RDXCMT3
DXC E3 Module RDXCME3
DXC Dual V.35/RS530 Module RDXCMHS
DXC Dual Fiber Module RDXCDFO
DXC Inverse MUX V.35 Module RDXCDIMV35
DXC Inverse MUX Ethernet RDXCDIMETH
DXC 2-Port E1 HDSL RDXCMDHLE
DXC 2-Port E1 HDSL 2W RDXCMDHLE2
DXC 2-Port T1 HDSL RDXCMDHLT1
DXC-2/115v (Fixed 2 Port)E1/T1 RDXC2T1E1
Call Pulse for more options and configurations.