RAD Data comm FOMi-T1 Bedienungsanleitung PDF herunterladen (Seite 5)

128

RAD Data Communications 2011 Catalog

ASMi-54, ASMi-54C,

ASMi-54L, ASMi-54LRT

SHDSL.bis Modems with Integrated

Router or Multiplexer

•

Point-to-point E1 and Fast Ethernet

extension over multiple SHDSL.bis lines

•

Standards-compliant SHDSL (ITU-T

G.991.2 and ETSI 101524)

•

11.4 Mbps over 2-wire; up to 30 Mbps

over 4-wire

•

EFM (Ethernet in the First Mile) bonding

per IEEE 802.3-2005; M-Pair bonding for

HDLC per G.991.2

•

TC-PAM 16 or TC-PAM 32 line coding

•

Ethernet bridging and routing

•

VLAN prioritization and Ethernet QoS

support

•

Daisy-chain or ring topology with STP

support per IEEE 802.1D

•

Managed via SNMP, Telnet and ASCII

terminal

•

Optional rail mountable metal enclosure

for extreme temperatures (ASMi-54)

For latest updates visit www.rad.com

The ASMi-54 product line includes a range of

cost-effective, managed devices for extending

E1 and mid-band Ethernet services over multi-

pair bonded copper links. Ensuring reliable

performance over poor quality or noisy lines,

the ASMi-54 SHDSL.bis modem and ASMi-54C

module operate in full duplex mode over 2-wire,

4-wire or 8-wire lines, achieving variable data

rates of up to 22.8 Mbps. The ASMi-54L and

ASMi-54LRT provide access rates of up to

11.4 Mbps over 4-wire connections. The devices

can achieve an extended service range of up to

2.6 km (1.825 miles) for each 5.7 Mbps pair at

26 AWG. The ASMi-54 line is part of the

AXCESS+ portfolio of multiservice access and

First Mile solutions.

The ASMi-54 modems are ideal for carriers,

service providers and mobile operators, as well

as corporate, utilities and transportation

companies looking for economical delivery of

voice and broadband data traffic in point-to-

point or hub and spoke communications. In

addition, ASMi-54’s ruggedized design ensures

reliable operation in industrial applications and

harsh environments.

Alternatively, RAD's high performance SHDSL

technology supports increased throughput for

Ethernet services of 11.4 Mbps over 2-wire and

up to 30 Mbps over 4-wire.

Ethernet capabilities and QoS support

Featuring a built-in Ethernet switch, the

ASMi-54 SHDSL.bis modems include up to four

10/100BaseT user ports and support VLAN-

aware and VLAN-unaware bridging. VLAN

stacking (Q-in-Q) and stripping functionalities

enable transparent traffic delivery over packet

switched networks with optimal efficiency.

QoS (quality of service) levels are defined

according to VLAN priority (802.1p), IP

Precedence, DSCP, or per port, offering users

flexibility in differentiating traffic handling

depending on application requirements. Up to

four priority queues are supported using Strict

Priority (SP) scheduling.

Fault propagation enables the units to shut

down the Ethernet user port when an SHDSL

line failure is detected and to switch traffic to an

alternate route. EFM bonding capabilities ensure

that a failure or addition of a link does not drop

the traffic being transmitted over the other

wires in the group. Capacity is also maintained

when a new link is added at a lower rate during

Ethernet transmission.

PSN

nxE1/

STM-1

GbE/

ETH

LRS/Megaplex

4xFE

ASMi-54

BSC

RNC

Central Office

NodeB

Node B

4xE1

BTS

BTS

Copper

SDH/

SONET

GbE/

ETH

nxE1/

STM-1

Up to 96

Mobile backhaul over DSL infrastructure

DSL MODEMS

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