RAD Data comm Megaplex-2104 Uživatelský manuál stáhnout pdf (Strana 15)

100

RAD Data Communications 2011 Catalog

CROSS CONNECTS

DXC Family

Multiservice Access Nodes

Cross connect, groomer and broadcast

All DXC modules allow maximum flexibility

between ports. A user-programmable

connection matrix connects any incoming

56/64 kbps timeslot to any outgoing 56/64 kbps

timeslot. It supports cross connect functions,

such as drop-and-insert, distribute and collect.

The DXC family enables the grooming of

fractional traffic from the user side into full E1/

T1, E3/T3 or STM-1 trunks, for connection to the

network. Grooming and bandwidth maximization

are implemented by placing the n x 56/64 kbps

data channels into an E1 or T1 frame (including

internal E1/T1 of the E3 or T3 modules or VC-12

containers of the STM-1 module), using only the

required number of timeslots. This provides

fractional CSU/DSU functionality.

The DXC family can broadcast any traffic

combination from a single input to numerous

destinations. Channel relocating and half duplex

conferencing are also supported.

E1/T1 converter

The DXC family is also capable of converting

between E1/T1 ports. A-law/µ-law and signaling

conversion are performed according to E1 and T1

standards. DXC-8R, DXC-10A and DXC-30 convert

up to 16 ports. T1 traffic can be directly extracted

from the STM-1 module (which can act as a

converter for up to 30 T1 links).

E3, T3 and STM-1 multiplexer modules

These modules provide full channelization

functionality for the multiplexing and

demultiplexing of DS0 traffic. Aggregated

payload is 34 Mbps for E3; 45 Mbps for T3; and

the equivalent of 61 Mbps for STM-1 (one

chassis). When chaining a number of units, the

aggregated payload is equivalent to 155 Mbps.

G.747 is supported by DXC-100 (see page 98).

Redundancy

The DXC family provides flexible redundancy and

protection to accommodate each user’s needs

and help minimize service downtime. The

modules’ link protection is user-programmable.

Hardware protection and partial or full

redundancy can be added at any time.

Redundancy in each unit:

• DXC-30 system redundancy (power supply

and common logic) is optional and can be

added at any time. Partial redundancy can

also be provided.

• DXC-8R has built-in full system redundancy

• DXC-10A has no system redundancy

• Most DXC modules support line redundancy

•

Non-blocking cross connect up to 960

time slots

•

Traffic grooming

•

Compact 1U or 3U-high enclosure

•

Modular construction with four, five or

15 I/O slots

•

Services supported: n x 56/64 kbps, ISDN,

IDSL, SHDSL, E1, T1, E3, T3, and STM-1

•

Optional common logic and power

supply redundancy

•

Optional link and/or hardware

protection

•

Integrated fiber optic, SHDSL and IDSL

modems

•

Built-in E1/T1 converter, including

A-law/μ-law and signaling conversion for

PCM timeslots

The DXC family consists of modular multiservice

access nodes, providing non-blocking DS0 cross

connect for up to 120 lines.

Plug-in interface modules can accommodate up to

eight links each (see Modules section on page

102). Many services are supported, including

n x 56/64 kbps, ISDN, E1, T1, E3, T3, and STM-1.

Backbone

SDH

Data switch

Voice switch

DXC-8R/DXC-10A/

DXC-30

RADview

Management

Station

STM-1

E3/T3

E1/T1

Remote

Distribution Node

Customer Premises

DXC-8R/DXC-10A/

DXC-30

PBX

4xE1/T1

ISDN “U”

ports

FCD-IP

Router

FE1

SHDSL

Data

Voice

ISDN

LAN

Frame Relay

Megaplex-2100

ASMi-31 (NT)

64 kbps

DTE

E1/T1

IDSL

2-wire

5.5 km max

ASMi-52

10/100BaseT

SHDSL

Multiservice access platform

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