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Megabit Modem 300S
High-Performance SDSL Modem
The Megabit Modem® 300S is a highperformance SDSL modem that connects
individual power users or small LAN
environments to a frames-over-SDSL service.
The 300S may be used “back to back” with
another 300S for simple LAN extension
applications, or it may be used with the
MM6000 shelf to concentrate 10 MM300S
units in the central location for higher density
applications.
ADC’s rate-selectable modems enable the user
to manually choose transmission speed in
order to obtain the best possible data rate for
distance and line condition. Typically,
subscribers close to the provider’s point of
presence will receive the highest data rate
available, while subscribers far away will still be
reachable at lower rates.
Features:
• Symmetric operation up to 2.048 Mbps
• 10BASE-T Ethernet port
• High-performance Ethernet bridging:
dynamically learns up to 8,192 addresses
• Complete DSLview™ network management
LEDs provide at-a-glance status of modem
and network connections
• User-selectable data rate control
SPEC SHEET SPEC SHEET
www.adc.com • +1-952-938-8080 • 1-800-366-3891
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3/05 • 100024PR
Megabit Modem 300S
Applications
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www.adc.com • +1-952-938-8080 • 1-800-366-3891
Figure 2: Campus Networks
Remote Office Applications
Remote office network connectivity to the central site: remote offices can simply connect the 300S to
their LAN and use the symmetric SDSL service to tap into their corporate network.
Campus Applications
Campus networks: within a private network the 300S may be used to connect LANs in separate buildings.
Figure 1: Remote Office Applications
300S
300S
300S
Provider
Network
Corporate Office
Remote Offices
Main Local Area Network
Remote LAN Site
10BASE-T 10BASE-TSDSL
300S Modem 300S Modem
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3/05 • 100024PR
Megabit Modem 300S
Applications
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Multi-Tenant Applications
Multi-tenant office buildings and dwelling units: service providers may use the 300S in office buildings
and apartment complexes to provide in-building network services over private wiring. MM6000 shelf
can house up to 10 units of MM300S in a 19" or 23" rack. MM300S units can then be connected to
an Ethernet Hub or Switch or a Router to connect to Internet.
Figure 4: Business Internet Environment
Figure 3: Multi-Tenant Applications
Internet Applications
Internet access for businesses and other organizations with small LANs: the 300S can be used with SDSL
services, in lieu of a separate modem, CSU/DSU and router.
TENANT 2
MM6000 shelf +
MM300S (1 to 10)
300S
300S
SDSL
LAN
LAN
SDSL
TENANT 1
Internet
Internet
For Power Users
And Small LANs
SDSL
300S 300S
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ADC Telecommunications, Inc., P.O. Box 1101, Minneapolis, Minnesota USA 55440-1101
Specifications published here are current as of the date of publication of this document. Because we are continuously
improving our products, ADC reserves the right to change specifications without prior notice. At any time, you
may verify product specifications by contacting our headquarters office in Minneapolis. ADC Telecommunications,
Inc. views its patent portfolio as an important corporate asset and vigorously enforces its patents. Products or
features contained herein may be covered by one or more U.S. or foreign patents. An Equal Opportunity Employer
100024PR 3/05 Revision © 2000, 2004 ADC Telecommunications, Inc. All Rights Reserved
Web Site: www.adc.com
From North America, Call Toll Free: 1-800-366-3891 • Outside of North America: +1-952-938-8080
Fax: +1-952-917-3237 • For a listing of ADC’s global sales office locations, please refer to our web site.
SPEC SHEET
LEDs Power
LAN: Link, Tx, Rx, Collision
SDSL: Sync, Tx, Rx, Margin
LAN Interface 10BASE-T (802.3i) Ethernet
Connector: RJ-45
SDSL WAN Interface Rate-selectable, single-pair, high-speed DSL capable of full duplex symmetric
operation up to 2.048 Mbps
Rate-selectable at the following rates: 128 kbps, 384 kbps, 768 kbps,
1.024 Mbps, 1.280 Mbps, 1.563 Mbps, 1.792 Mbps, 2.048 Mbps (rotary
switch for rate setting)
Connector: RJ-11
Internetworking High-performance Ethernet bridging
Dynamically learns and ages up to 8,192 addresses
Power Requirements 100-240 VAC, 50/60 Hz, 0.2 A
Operating Requirements Temperature: 32ºF to 122ºF (0ºC to 50ºC)
Relative Humidity: up to 95% non-condensing
Altitude: between -200 and 13,000 ft (-61 to 3,962m)
WAN Protocols Ethernet over HDLC (frames) over SDSL
Firmware upgradable from Avidia System platforms over the SDSL link
Weight 1.4 lbs (.63 kg)
Description
Megabit Modem 300S
Megabit Modem 6000 Shelf
Catalog Number
MM300S-x*
MM6000
Dimensions (H x W x D)
1.3 x 6.8 x 5.5 in. (3.2 x 17.2 x 14.0 cm)
7.6 x 19.2 x 16.4 in. (19.2 x 48.7 x 41.4 cm)
Ordering Information
*Note: Replace the “x” with one of the following digits:
3 = Include power supply for North American use, North American power cord
4 = Include power supply for European use, European power cord
5 = Include power supply for European use, UK/Ireland power cord
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