RAD ASMi-54 User Manual download pdf

Data Sheet

Megaplex-4

ASMi-54C

Ethernet and TDM over SHDSL/SHDSL.bis 8-Port

Modules

• 16-wire modules for Ethernet and TDM services over 8W (4-pair), 4W (2-pair), or 2W

(1-pair) SHDSL/SHDSL.bis lines

• SHDSL: Data rates of up to 22.8 Mbps for 8W, up to 11.4 Mbps for 4W and up to

5.7 Mbps for 2W

• EFM extended rate for ASMi-54L: Data rates of up to 15.3 Mbps per 2W

• Remote power feeding over 4 wires

• Extended range with RAD’s SHDSL/SHDSL.bis repeater

• Two copper/fiber Ethernet interface ports for local Ethernet termination

• EFM (Ethernet First Mile) or M-pair bonding over SHDSL/SHDSL.bis

ASMi-54C is a family of SHDSL/SHDSL.bis

Ethernet and TDM modules for the

Megaplex-4 chassis that delivers digital

data to customer premises over existing

copper cables of the distribution network.

SHDSL/SHDSL.BIS

ASMi-54C modules provide a simple,

low-cost connectivity solution using High

Speed Digital Subscriber Line

(SHDSL/SHDSL.bis) technology, as

standardized by ITU-T Rec. G.991.2.

The ASMi-54C family includes three main

module types:

• ASMi-54C/ETH –Ethernet over

SHDSL.bis 8-port module with EFM

support

• ASMi-54C/E1/N - E1 over

SHDSL/SHDSL.bis 8-Port module

(starting from version 3.0)

• ASMi-54C/E1/ETH/N –E1 and Ethernet

over SHDSL/SHDSL.bis 8-port module,

with optional remote power feeding.

(starting from version 3.0)

Note: ASMi-54C/E1/N and ASMi-54C/E1/ETH/N

modules cannot work with a mix of ASMi-54/54L

and ASMi-52/52L modems at the far end.

Each SHDSL/SHDSL.bis port is a multirate

SHDSL/SHDSL.bis modem transmitting at

user-selectable data rates of up to

5.7 Mbps on each pair.

Using TC-PAM 64 line coding technology,

the modems operate in full-duplex mode

at up to 15 Mbps per port.

ASMi-54C can operate as a Central

SHDSL.bis (STU-C) or Remote (STU-R)

SHDSL.bis Termination Unit working with

up to 8 standalone devices or another

ASMi-54C module.

When providing Ethernet services and

operating as STU-R, ASMi-54C performs

line probing according to G.991.2. The DSL

interface can be configured to adapt its

rate to the condition of the line (noise,

loop attenuation, etc.) or operate at a

fixed user-selected rate. The SHDSL line

performs TPS-TC framing 64/65 for EFM

(IEEE 802.3) and HDLC (G.991.2).

The processing and switching of Ethernet

traffic over TDM (SHDSL) links is

configured by means of PCS (Physical

Coding Sublayer) using EFM or HDLC as the

Layer-2 protocol.

EFM bonding on the Ethernet interface

ensures that a failure or addition of a link

does not drop the traffic being

transmitted over the other wires in the

group. The capacity of the group is not

affected when a new link is added at a

lower rate.

ETHERNET

The Ethernet services are provided by

means of an internal Layer-2 Ethernet

switch that fully complies with the IEEE

802.3/Ethernet V.2 standards, and has full

VLAN support.

The external Ethernet ports can be

ordered with two types of interfaces:

• 10/100BaseTx interfaces terminated in

RJ-45 connectors.

• SFP Sockets for Fast Ethernet

transceivers. RAD offers a wide variety

of SFPs, for meeting a wide range of

operational requirements.

The Ethernet switch switches traffic

between the module Ethernet ports and

bundles, including ETH over SHDSL, and

the CL module Ethernet subsystem (for

connection via the CL GbE ports to a

packet-switched network, or for

transmission through the SDH network via

virtually concatenated groups (VCGs).

ASMi-54C implements the IEEE's 802.1Q

standards to provide VLAN-tagging with

1 2 3 4

ASMi-54C 1
Data Sheet 3

Summary of Contents

Page 1 - ASMi-54C

Data Sheet Megaplex-4 ASMi-54C Ethernet and TDM over SHDSL/SHDSL.bis 8-Port Modules • 16-wire modules for Ethernet and TDM services

Page 2

ASMi-54C Ethernet and TDM over SHDSL/SHDSL.bis 8-Port Modules levels of prioritization, enabling carriers to offer differentiated Ethernet services.

Page 3 - Data Sheet

Data Sheet Table 1. Typical Ranges over 2W@26 AWG Cable Data Rate [kbps] Ranges [km] [mi] 192 6.6h 4.1 1536 4

Page 4

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