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ASMi-54LSHDSL.bis Modem

 Managed modem transmitting full-duplex at data rates of up to 5.7 Mbps over 2-wireand 11.4 Mbps over 2/4-wire lines

High-speed Ethernet

 Dual Bearer mode for E1 and Ethernet HDLC
 Extended rates of up to 11.4/15 Mbps over 2-wire with RAD proprietary solution

and E1 traffic over

 SHDSL bonding – for EFM: PAF according to IEEE802.3, for HDLC: M-Pair according toG.991.2

copper links

 SHDSL ITU-T G.991.2 and ETSI 101524 compliance 4-port 10/100BaseT interface with integrated Ethernet switch
 Full interoperability with Megaplex-4100/LRS-102 ASMi-54C and ASMi-54C/N cards
and/or point-to-point applications

ASMi-54L is a simple, cost-effective,
dedicated managed SHDSL.bis modem
that extends the range of high-speed
services over existing copper pairs. The
modem is used for point-to-point
Ethernet and E1 service extension at rates
of up to 11.4 Mbps/15 Mbps over 2-wirelines using bonding technology(see Figure 1).

A special RAD proprietary solution
provides extended rates of up to 15 Mbps
over 2-wire lines and up to 30 Mbps over4-wire lines.

The Access Company

ASMi-54LSHDSL.bis Modem

The modem employs TPS-TC framing
64/65o for EFM (IEEE802.3) and HDLC(G.991.2) on the SHDSL link.

ASMi-54L can operate as a CO device or a
CPE device according to user
configuration.

ASMi-54L performs line probing according
to G.991.2. When enabled, the DSL
interface adapts its rate to the conditionof the line (noise, loop attenuation, etc.).
When disabled, traffic on the DSL line istransmitted at a fixed rate selected by theuser.

The modem uses an Embedded Operation
Channel (EOC) for controlling andmonitoring the SHDSL/SHDSL.bisrepeaters. Up to eight SHDSL/SHDSL.bis
repeaters can be installed in line toincrease the operation range of E1- andEthernet-based modems.

Figure 1. Multiplexing Services over SHDSLEFM BONDING
EFM bonding on the Ethernet interface
ensures that a failure or addition of a link
does not drop the traffic beingtransmitted over the other wires in thegroup. The capacity of the group does notdecrease when a new link is added at alower rate.

Data SheetETHERNET SUPPORT
ASMi-54L features up to four Ethernet
10/100BaseT ports with half/full-duplex,
autonegotiation and flow control. The
fault propagation functionality enables theunit to shut down the Ethernet user port
when an SHDSL line failure is detected.
LANs are connected by bridging.

The internal forwarding of Ethernet traffic
can be configured in two ways:


By specifying the ports (a mode
identified as unaware in accordancewith Metro Ethernet Forum (MEF)
standards). In this mode, all theEthernet traffic reaching one of theports is forwarded to the other port,and vice versa
By using VLANs for classification: (amode identified as aware inaccordance with Metro Ethernet Forum(MEF) standards). In this mode,
Ethernet traffic reaching one of theports is forwarded to another port inaccordance with its VLAN identifier.

QUALITY OF SERVICE
The 802.1D, DSCP, and Per Port priority
schemes allow users to define different
QoS levels according to application
requirements.
The modem implements the IEEE's 802.1q
standards to provide VLAN-tagging withfour levels of prioritization, enabling
carriers to offer differentiated Ethernet
services. VLAN tagging can also be
employed to separate traffic, ensuringtransparency of the customer traffic andbolstering security of management traffic.
The user can activate or deactivate thepriority mechanism, and each priority(VLAN priority, DSCP or per port) can be
configured and mapped to one of fourpriority queues.
Ingress data rate can be limited on each
Ethernet port.

Figure 2. Extended Rates over 2-wireASMi-54L
SHDSL.bis Modem

MANAGEMENTDYING GASPPHYSICAL

The ASMi-54L unit can be managed usingthe following connections:

Dying Gasp condition occurs if there is aninterruption in the ASMi-54L powersource. ASMi-54L reports power failures
to the specified network management
stations by sending an SNMP trap. This
helps a service provider identify andisolate the end-point device experienced apower failure.

ASMi-54L is available with several power
supply options:Local RS-232 terminal

Telnet server, SNMP (Ver.1)

Web serverInband management with or without
dedicated VLAN.

ASMi-54L supports the IEEE 802.3ah(IEEE 802.3-2005) standard for Operation,Administration, and Maintenance (OAM),originally developed for Ethernet in theFirst Mile (EFM) applications. OAM is a setof functions designed to monitor network
operation on an SHDSL line, in order todetect line faults and measureperformance.

AC/DC wide range (100 to 240 VAC,
-48 to -60 VDC nominal)

24 VDC.

The modem is encased in a compact
half-19” plastic enclosure that can bemounted alone or in pairs in a 19-inchrack using RAD’s optional rack mount kits(see Ordering). The modem is available inextended temperature versions (by specialrequest).

Figure 3. Extended Rates over 2-wire or 4-wire lines with S-RPT Repeater and PFH-4 Feeder

Data SheetSpecifications
LINE INTERFACE
Line Type
Symmetrical PSD
2/4-wires unconditioned dedicated line
(twisted pair)
EFM Bonding
Per IEEE802.3ah and ITU-T G.991.2 (forEthernet only)
OAM
According to IEEE 802.3ah (passive andactive)
Line Coding
TC-PAM 16/32/64/128
Frame Size
2047 bytes

Line Rate
For EFM: 192 to 15296 kbps in steps ofn x 64 kbps for each pair
For HDLC: 192 to 8576 kbps in steps ofn x 64 where n=134 for each pairImpedance

SHDSL Reference ClockCompliance
ITU-T G.991.2, ETSI TS 101524

E1+Ethernet user interfaces:
Clock Mode 1 or 2
Ethernet only user interface:
Clock Mode 3aRange
See Table 1, noise-free environment (perpair) on 26 AWG wire
Extended Range over DSL Line
License key for transmitting up to15 Mbps over 1 pair or up to 30 Mbps
over 2 pairs (point-to-point only)

Table 1. Typical Ranges
Data Rate[kbps]

Range[km][miles]

192

6.6

4.1

1536

4.9

3.0

2048

4.5

2.8

4096

3.2

2.04608

3.0

1.956962.61.611400

1.2

0.7

135Ω
Connectors
RJ-45

E1 PORT
Coding
HDB3
Line Impedance
120, balanced75, unbalanced (via adapter cable)
Jitter Performance
As per ITU G.823
Connector
RJ-45
Diagnostics
Local analog loopback
Remote digital loopback

ASMi-54L
SHDSL.bis ModemCONTROL PORTINDICATORSInterface
V.24/RS-232

Front PanelPWR (green) –On: power supply is on
Off: power supply is off

Type
DCE
FormatAsynchronous; 8 bits, 1 stop bit, no parity
Data Rate
9.6, 19.2, 115.2 kbps
Connector
9-pin, D-type, femaleETHERNET PORTS
Interface
10/100BaseTConnectors
4 x RJ-45
Frame Size
1580 bytes

TST (yellow) –On: a test is active
Off: no test is active
ALM (red) –On: new alarm in the alarm buffer
Off: no alarms in the alarm buffer
SHDSL SYNC (green/red) –Green: the SHDSL line is synchronized
and can pass data
Green flashing: the SHDSL line is intraining process
Red flashing: the SHDSL line is in PAF/Mpair establishment stage
Red: the SHDSL line is either notsynchronized, or in training process orin PAF/M-pair establishment stage

Rear Panel
Ethernet Ports LINK/ACT (per port)
ACT (yellow) –Flashing: Ethernet traffic on the port
LINK (green) –On: Ethernet port link is up
Off: No Ethernet link on the port
E1 LOC (red) On: Loss of signal or sync loss (inframed mode only) or unframed AIS isreceived on the E1 port
E1 REM (red) On: Remote alarm is received on theE1 port

Figure 4. Up to 96 Remote ASMi-54L sites with LRS-102 as a Central Solution

Data Sheet

GENERAL
Power Supply
Wide-range AC/DC: 100 to 240 VAC,-48 to -60 VDC nominal
DC: 24 VDC nominalTiming
For CO:Internal – derived from the modem
External – derived from E1 port

Performance Monitoring
SHDSL and E1 statistics collection
PhysicalHeight: 43.7 mm (1.7 in)
Width: 217 mm (8.5 in)
Depth: 170 mm (6.7 in)
Weight: 0.6 kg (1.2 lb)

Environment
Temperature: 0C to 50C (32F to 122F)
Extended temperature (4 X ETH interface
version only): -20C to 70C (-4F to 158F)
Humidity: Up to 90%, non-condensing

For CPE:
Receive – derived from the SHDSL line

Table 2. Modem Comparison ChartFeature

ASMi-52

ASMi-52LASMi-54

ASMi-54L

ASMi-54LRT(Ver. 2.7)

(Ver. 2.0)

(Ver. 3.5)

(Ver. 2.6)

(Ver. 2.1)

Max. data rate
(Mbps)

2.3/4.6

2.3/4.6

5.7/11/22

Interface

V.35, RS-530, X.21,
E1, ETHV.35, X.21, E1, ETH, 4 x ETH, E1/4 x E1
4 x ETH

5.7/11.4 (11.4/15 per 5.7/11
pair with license key)
4 x ETH, E1
4 x ETH, E1

RouterLine


2W/4W

2W/4W

2W/4W/8W

2W/4W

2W/4W/8W

Data Sheet
ASMi-54LSHDSL.bis Modem

SUPPLIED ACCESSORIES

ASMi-54L/$/#/*/@/^/&

Power cord

STANDARD CONFIGURATIONS

LegendAC/DC adapter for -48 VDC

ASMI-54L/4ETH/2W/ETR$

ASMI-54L/4ETH/4W/ETR
ASMI-54L/24V/4ETH/4W/ETR
ASMI-54L/4ETH/4W/E1/ETR
ASMI-54L/4ETH/2W/E1#

ASMI-54L/4ETH/4W/E1
ASMI-54L/4ETH/4W*@Optional 24 VDC power supply(Default=wide-range AC/DC power
supply, 100 to 240 VAC,
-48 to -60 VDC):
24V 24 VDC
Ethernet interface (mandatory):
4ETH Four-port ETH module with
4 x RJ-45 connectors
SHDSL interface:
2W
2-wire (1 pair)
4W
4-wire (2 pairs)
User interface (Default=no E1interface):
E1
E1

^

Extended temperature for device with
4 X ETH interface (Default=0C–50C/32F–122F)
ETR -20C to 70C (-4F to 158F)
range (according to specialrequest)&License key for high data rate(Default=no key)HR
License key for 11.4 Mbps datarate per pair)

OPTIONAL ACCESSORIES
RM-33-2
Hardware kit for mounting one or two
plastic ASMi-54L units in a 19-inch rack
CBL-DB9F-DB9M-STR
Standard 9-pin male to female RS-232
control port cable
CBL-RJ45/2BNC/E1Interface adapter for converting abalanced E1 RJ-45 connector into a pairof BNC unbalanced coaxial connectors

ASMi-54L-LIC/HR
License key for high data rate

International Headquarters
24 Raoul Wallenberg Street
Tel Aviv 69719, Israel
Tel. 972-3-6458181
Fax 972-3-6498250, 6474436
E-mail market@rad.com

www.rad.com

North America Headquarters
900 Corporate Drive
Mahwah, NJ 07430, USA
Tel. 201-5291100
Toll free 1-800-4447234
Fax 201-5295777
E-mail market@radusa.com

Order this publication by Catalog No. 803951

The Access Company

503-110-02/12 (2.6) Specifications are subject to change without prior notice. 1989–2012 RAD Data Communications Ltd. The RAD name, logo, logotype, and the terms EtherAccess, TDMoIP and TDMoIP Driven,and the product names Optimux and IPmux, are registered trademarks of RAD Data Communications Ltd. All other trademarks are the property of their respective holders.

SPECIAL CONFIGURATIONS

Ordering