Browse Prior Art Database

An Experimental Encapsulation of IP Datagrams on Top of ATM (RFC1926)

IP.com Disclosure Number: IPCOM000004164D
Original Publication Date: 1996-Apr-01
Included in the Prior Art Database: 2000-Sep-13
Document File: 2 page(s) / 3K

Publishing Venue

Internet Society Requests For Comment (RFCs)

Related People

J. Eriksson: AUTHOR

Abstract

This RFC describes a method of encapsulating IP datagrams on top of Acoustical Transmission Media (ATM). This is a non-recommended standard. Distribution of this memo is unnecessary.

This text was extracted from a ASCII Text document.
This is the abbreviated version, containing approximately 100% of the total text.

Network Working Group J. Eriksson

Request for Comments: 1926 KTH NOC

Category: Informational 1 April 1996

An Experimental Encapsulation of IP Datagrams on Top of ATM

Status of this Memo

This memo provides information for the Internet community. This memo

does not specify an Internet standard of any kind. Distribution of

this memo is unlimited.

Abstract

This RFC describes a method of encapsulating IP datagrams on top of

Acoustical Transmission Media (ATM). This is a non-recommended

standard. Distribution of this memo is unnecessary.

Overview

The modern laptop computer of today often contains the hardware

needed to perform wireless communications by using Acoustical

Transmission Media, i.e. sound waves. Until this moment there has

been no standard on how to run IP on such media. This document is an

attempt to fill this silence.

Frame transmission

The IP datagram is divided into four-bit chunks, in network beep

order, and converted to characters according to the table below. A

single "b" character is prepended as a frame start signal, the

characters are then transmitted in ordinary morse code by modulating

a steady tone on and off. The frequency of this tone is also known

as the Acoustical Signature (AS number) of the sender.

Bits Character Bits Character

0000 "i" 1000 "u"

0001 "t" 1001 "m"

0010 "s" 1010 "v"

0011 "a" 1011 "f"

0100 "n" 1100 "w"

0101 "h" 1101 "l"

0110 "d" 1110 "k"

0111 "r" 1111 "g"

To allow more than one Local Acoustical Network (LAN) to coexist the

use of different AS numbers for different LANs is suggested. This

document proposes seven standard AS numbers to be used, see the table

below for details.

Name Frequency

"a" 440 Hz

"b" 494 Hz

"c" 523 Hz

"d" 587 Hz

"e" 659 Hz

"f" 698 Hz

"g" 784 Hz

It is assumed that for normal operation AS number "a", 440 Hz will be

used.

Frame reception

The above process is simply performed backwards.

Security Considerations

The author assumes that the users take whatever precautions that are

necessary before attempting to use this protocol in any crowded area.

Author's Address

Johnny Eriksson

KTH NOC

EMail: bygg@sunet.se

or

-... -.-- --. --. @ ... ..- .- . - .-.-.- ... .