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AutoBaud Technology
AutoBaud technology consists of an enhanced set of SDSL device
drivers that greatly enhances the connection process between
DSL transceivers from different manufacturers. It establishes
connections automatically at the fastest data rate that a given
connection can support as well as with the appropriate Layer 2
technology. AutoBaud has been endorsed by and integrated into
products by a broad base of more than 40 DSL industry leaders.
As such, it functions as the “Autobahn” of DSL connectivity.
™
Key Benefits
AutoBaud reduces connection setup time by automatically
determining the maximum data rate that can be supported on
a specific loop. By predetermining the correct data link layer,
AutoBaud enables ready interoperability between different DSL
equipment manufacturers. AutoBaud supports a wide range
of SDSL data rates — everything from 144 Kbps to 2.3 Mbps,
in 8 Kbps increments.
How AutoBaud Works
Pre-Activation
• AutoBaud probes the link and determines the loop
characteristics, including line noise and attenuation
• AutoBaud determines the maximum speed that the link
will support
• AutoBaud negotiates the correct Layer 2 protocol (direct cell,
framed cell, and direct packet)
• AutoBaud negotiates the best speed that is supported on both ends
Post-Activation (Optional)
• AutoBaud sets up a communications channel
• Line characteristics including noise margin, far-end attenuation,
SNR and BER are exchanged
• The connection speed is fine-tuned
Distinguishing Features
• Greatly reduces connect times
• Eliminates most provisioning requirements
• Always makes the highest-speed
connection the line will support
• Identifies appropriate Layer 2 technology
to the CPE prior to synchronization
• Easy to implement
• Distributed without charge
features
and
specifications
Obtaining AutoBaud Technology
The AutoBaud algorithm is integrated into Conexant’s ZipWire device
drivers and replaces the previous set. Integration is eased since only
a small set of files has been changed, thus limiting the impact to
previously-released products.
Further Information
literature@conexant.com
(800) 854-8099 (North America)
(949) 483-6996 (International)
Order # 101125A
00-1017
Network Access
Printed in USA
Europe North – England
Phone: +44 1344 486444
Fax: +44 1344 486555
Europe – Israel/Greece
Phone: +972 9 9524000
Fax: +972 9 9573732
Europe South – France
Phone: +33 1 41 44 36 51
Fax: +33 1 41 44 36 90
Europe Mediterranean – Italy
Phone: +39 02 93179911
Fax: +39 02 93179913
Europe – Sweden
Phone: +46 (0) 8 5091 4319
Fax: +46 (0) 8 590 041 10
Europe – Finland
Phone: +358 (0) 9 85 666 435
Fax: +358 (0) 9 85 666 220
World Headquarters
AutoBaud membership requests can be made at the AutoBaud Web site:
http://www.autobaud.org, via the “Email Enrollment” option. You then
enjoy “Membership” status which permits downloading the free device
drivers and, after signing the software license agreement, receiving the
password needed to extract the files.
Conexant Systems, Inc.
4311 Jamboree Road
Newport Beach, CA
92660-3007
Phone: (949) 483-4600
Fax 1: (949) 483-4078
Fax 2: (949) 483-4391
Americas
U.S. Northwest – Santa Clara
Phone: (408) 249 -9696
Fax: (408) 249 -7113
Product Features
Supported Devices
• 8970, 8973, 8980, 8975, 8985
Supported Layer 2
• ATM
• HDLC
• T1-E1-Other
Supported Data Rate
• Any rate supported by both ends from 144 K to
2.3 MB in 8 K increments
U.S. Southwest – Los Angeles
Phone: (805) 376 -0559
Fax: (805) 376 - 8180
U.S. Southwest – Newport Beach
Phone: (949) 483-9119
Fax: (949) 483-9090
U.S. San Diego
Phone: (858) 713-4730
Fax: (858) 713-4008
U.S. North Central – Illinois
Phone: (630) 773-3454
Fax: (630) 773 -3907
U.S. South Central/Mexico
– Texas
Phone: (972) 871-1920
Fax: (972) 871- 8910
U.S. Northeast – Massachusetts
Phone: (978) 367-3200
Fax: (978) 256 - 6868
U.S. Carolinas – North Carolina
Phone: (919) 858 -9110
Fax: (919) 858 - 8669
U.S. Southeast/South America
– Florida
Phone: (727) 799 - 8406
Fax: (727) 799 - 8306
U.S. Mid-Atlantic – Pennsylvania
Phone: (215) 244- 6784
Fax: (215) 244- 9292
Canada – Ontario
Phone: (613) 271-2358
Fax: (613) 271-2359
Asia Pacific
Taiwan
Phone: (886 -2) 2-720-0282
Fax: (886 -2) 2-757- 6760
Australia
Phone: (61-2) 9869 4088
Fax: (61-2) 9869 4077
China – Central
Phone: 86 -21- 6361-2515
Fax: 86 -21- 6361-2516
China – South
Phone: (852) 2 827- 0181
Fax: (852) 2 827- 6488
China – South (Satellite)
Phone: (86) 755 -5182495
Fax: (86 ) 755 -5183024
China – North
Phone: (86 -10) 8529 - 9777
Fax: (86 -10) 8529 - 9778
India
Phone: (91-11) 692-4789
Fax: (91-11) 692 -4712
Korea
Phone: (82-2) 565-2880
Fax: (82-2) 565-1440
Korea (Satellite)
Phone: (82-53) 745-2880
Fax: (82-53) 745-1440
Singapore
Phone: (65) 737 7355
Fax: (65) 737 9077
Japan
Phone: (81-3) 5371 1520
Fax: (81-3) 5371 1501
Default Settings Include
• 2320 Kbps, 1568 Kbps, 1552 Kbps, 1536 Kbps,
1168 Kbps, 1040 Kbps, 784 Kbps, 768 Kbps, 528
Kbps, 416 Kbps, 400 Kbps, 384 Kbps, 272 Kbps,
208 Kbps, 192 Kbps, 160 Kbps, 144 Kbps
Supported Framing Type
• None
• HDSL-T1-E1
• ATM over CAP
Scrambler Types
• SSS
• DSS
• Reserved
Connect Times (Pre-Activation only)
• Connect times vary with line condition
and data rate
• Times, mostly modem training time, range from
~25 seconds under ideal conditions (2320 Kbps)
to ~75 seconds under the poorest (144 Kbps)
• Memory requirements
– 4 Kbytes of host memory for
Pre-Activation software
– 4 Kbytes of host memory for
Post-Activation software
Data Bit Order
• ANSI
• Non-ANSI
HDLC CRC Types
• HDLC 16, HDLC 32
• T1/E1 Framing
– Unframed
– SF
– ESF
CPU MIP Requirements
• 8970
• 8973 external host
– 1/8 MIPS/device
Conexant and the Conexant symbol are trademarks of Conexant Systems, Inc.
Europe
Europe Central – Germany
Phone: +49 89 829 -1320
Fax: +49 89 834-2734
www.conexant.com
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