DXC (Digital Cross Connect)

THE CROCUS DXC OFFERS 64KBPS CROSS-CONNECT FUNCTIONALITY BASED ON G.703/G.704 2MBPS (E1) PORTS.

The Crocus DXC allows the switching of any 64kbps time-slot from any E1 port to any time slot from any other E1 port.

The main applications are found in the local switching of Nx64k leased line connections, and the concentration (grooming) of Nx64k services onto 2Mbps E1 circuits. This solution is particularly useful for smaller concentration points where the investment in backbone switching equipment might be too high.

The DXC is available either as a card with 8 or 16 E1 ports, which fit into the CN4 range of card-nests. Depending on the selected card-nest, a rack-mount or desktop solution can be created.

The unit is configured through the free Telindus Maintenance Application (TMA®), which also gives comprehensive and visual information on the status and statistics of the DXC. Additional capabilities, like SNMP based management, Telnet, integration in network management platforms like HP OpenView® become possible when the DXC is used in combination with a controller card (Orchid 1003 LAN).

In larger networks, the DXC can be combined with other units, like xDSL, Fibre-optic, or multiplexing equipment. This will create a global access platform, combining copper or fibre based access-connectivity with local switching and grooming. This complete system can be controlled through a uniform integrated network management solution.

DXC (Digital Cross Connect)

Features and Benefits

Provides Programmable non-blocking cross connection of 64K Channels
8 or 16 E1 Interfaces
Fits into CN4 family of card-nests
Advanced, free maintenance software
Manageable under HP Openview®

DXC - Specifications

Cross-Connect

Number of E1 links: up to 8 or up to 16
Maximum throughput delay: 650 µsec
Non-blocking

Any arbitrary combination of 64k time-slots
Compliant with ETSI ETS 300 010-1 and ETS 300 010-2

E1 Link Interfaces

Applicable standards: ITU-T G.703, G.704, G.736, I.431,CRC-4 insertion
Jitter performance: ITU-T G.823
Line data rate (nominal): 2048 kbps

Line code: HDB3
Line connection: RJ45 DTE
Line Impedance: 120 ohm balanced or 75 ohm unbalanced (strap selectable)

Station Clock Interface (on CN4)

Nominal rate: 2048 kbps
Line code: HDB3

Line connection: RJ45
Line Impedance: 120 ohm balanced

Clocking Schemes

External transmit clock (station clock)
Transmit clock slaved on E1 receive clock from ports 1…4

Internal transmit clock
Fallback to other clock source in case of absence of clocking

Tests

External loop-back (Loop3) for each individual E1 line

Internal loop-back (Loop4) for each individual E1 line

Front Panel Indicators

General: PWR : Power For each E1

TST: Test indicator
ERR : Error condition: LOS, LOF, AIS, RAI (Remote Indication), Local configured alarm indication

Master clock indications

STATION : Station clock on the card-nest is used
1…4 : Clock derived from port 1..4 is used
INTERNAL : Internal free running clock is used

Management Interface

Synchronous High speed bus (for use with Orchid 1003 RJ45 connector on CN4 card nest
Console port: 9600 bps, asynchronous, 8N1, SubD ATWIN, TMA, CLI
Alarm contacts Major, minor (See CN4)

Dual Flash memory
Password protected
Insertion/extraction of management channel in G. time-slot 0

Mechanical Data (HxWxD)

8 ports version: 25 x 262 x 335 mm

16 ports version: 50 x 262 x 335 mm

Power

48Vdc or 230Vac, 8W max