home
***
CD-ROM
|
disk
|
FTP
|
other
***
search
/
HyperLib 1997 Winter - Disc 1
/
HYPERLIB-1997-Winter-CD1.ISO.7z
/
HYPERLIB-1997-Winter-CD1.ISO
/
オンラインウェア
/
COM
/
NetPhone 1.2.4 Demo folder.sit
/
NetPhone 1.2.4 Demo folder
/
NetPhone 1.2.4 Demo
/
NetPhone Manual
(
.txt
)
< prev
next >
Wrap
Common Ground
|
1995-05-30
|
583KB
|
1,825 lines
Frutiger 65 Bold
Contents
Palatino
Getting started
V2 . . . . . . . . . . . . . . . . . . . . . . . . .
NetPhone
phone numbers
. . . . . . . . . . . . . .
Making a call
!6 . . . . . . . . . . . . . . . . . . . . . . . . . . .
Receiving a call
V2 . . . . . . . . . . . . . . . . . . . . . . . . .
Expanded call window
$ . . . . . . . . . . . . . . . . . .
Audio window
V2 . . . . . . . . . . . . . . . . . . . . . . . . .
Saving addr
esses
)p0 . . . . . . . . . . . . . . . . . . . . . . . .
NetPub
@ . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Personal pr
ofile
)f2 . . . . . . . . . . . . . . . . . . . . . . . . .
ences
6 . . . . . . . . . . . . . . . . . . . . . . . . . . .
Audio encodings
q. . . . . . . . . . . . . . . . . . . . . . . .
NetPhone and vat
, . . . . . . . . . . . . . . . . . . . . . .
Compatibility issues
( . . . . . . . . . . . . . . . . . . . .
NetPhone and the WWW
. . . . . . . . . . . . . . .
!Contacting Electric Magic Company
. . . . . .
])NetPhone
Electric Magic Company 1994-95
All Rights Reserved
95-05-30
Frutiger 65 Bold
Copyright
Palatino
*F)NetPhone
1994-95 Electric Magic Company
All Rights Reserved.
Electric Magic Company her
eby disclaims all warranties r
elating to this softwar
e, whether expr
ess or
]Cimplied, including without limitation any implied warranties of mer
chantability or fitness for a
]iparticular purpose. Electric Magic Company will not be liable for any special, incidental, consequential,
indir
)>9ect or similar damages due to loss of data or any other r
z(eason, even if Electric Magic Company or
]can agent of Electric Magic Company has been advised of the possibility of such damages. In no event
*"9shall Electric Magic Company be liable for any damages, r
)8*dless of the form of the claim. The person
using the softwar
Ae bears all risk as to the quality and performance of the softwar
]-United States Government End Users: If you ar
e acquiring this softwar
!e on behalf of any unit or agency
]1of the United States Government, the following pr
ovisions apply
The Government agr
(i) if the softwar
7e is supplied to the Department of Defense, the softwar
e is classified as
commer
computer softwar
and the Government is acquiring only
estricted rights
in the Softwar
' e and its
]Ldocumentation as that term is defined in Clause 252.227-7013(c)(1) of the DF
ARS; and
(ii) if the softwar
Ne is supplied to any unit or agency of the United States Government other than
]=Department of Defense, the Government
s rights in the softwar
"e and its documentation will be as
]*defined in Clause 52.227 19(c)(2) of the F
AR or
)N7, in the case of NASA, in Clause 18-52.227-86(d) of the
Supplement to the F
]ONetPhone's support of GSM and Intel DVI encodings is made possible by the gener
ous r
elease of sour
code by the following parties:
GSM codec:
*!BCopyright 1992, 1993, 1994 by Jutta Degener and Carsten Bormann, T
echnische Universit
t Berlin
Any use of this softwar
e is permitted pr
ovided that this notice is not r
+emoved and that neither the authors nor the
echnische Universit
t Berlin ar
e deemed to have made any r
)$1esentations as to the suitability of this softwar
6 e for any
purpose nor ar
e held r
)U*esponsible for any defects of this softwar
e. THERE IS
ABSOLUTEL
ARRANTY
FOR THIS
SOFTW
Intel DVI codec:
*!.Copyright 1992 by Stichting Mathematisch Centr
Amster
dam, The Netherlands.
All Rights Reserved.
Permission to use, copy
, modify
, and distribute this softwar
:e and its documentation for any purpose and without fee is
eby granted, pr
iovided that the above copyright notice appears in all copies and that both that copyright notice and this
]hpermission notice appear in supporting documentation, and that the names of Stichting Mathematisch Centr
um or CWI
]Qnot be used in advertising or publicity pertaining to distribution of the softwar
-e without specific, written prior permission.
STICHTING MA
THEMA
TISCH CENTRUM DISCLAIMS
ARRANTIES WITH REGARD T
O THIS SOFTW
A L L
A B I L I T Y
STICHTING MA
THEMA
TISCH CENTRUM BE LIABLE FOR
)G"SPECIAL, INDIRECT OR CONSEQUENTIAL
DAMAGES OR
DAMAGES WHA
TSOEVER RESUL
TING FROM LOSS OF USE, DA
OR PROFITS, WHETHER IN
]4CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTW
cutio MDEF fr
om Digital
Alchemy
]'Copyright
Ramon M. Felciano 1992-95,
All Rights Reserved
Infinity W
indoid by T
'raul Gaul,
1991-94 Infinity Systems,
All Rights Reserved
Getting started
*ODNetPhone makes it possible to talk with other people over any TCP/IP
network
#connection. Use it with your LocalT
.alk or Ethernet network, or over the Internet.
"Although high speed connections pr
ovide better audio quality
, NetPhone was
)designed to work well using 14.4k modems.
NetPhone works by compr
1essing your voice as you speak and sending it acr
your TCP/IP
connection. When your compr
&essed voice arrives at the destination
computer
D, another copy of NetPhone plays it back
just like the telephone.
Qenjoy the benefits of verbal exchange, without having to worry about the costs of
**&making a long-distance telephone call.
*6PUse NetPhone to talk to your friends down the hall, in the building next door or
*)Lon the other side of the world! For homes, colleges, businesses and schools,
**)NetPhone makes the world a little smaller
&, by making your access to it a little
easier
Now you
)A+obably eager to get started using NetPhone.
Enjoy
System r
equir
ements
,Power Macintosh or a Macintosh with 68020 pr
!ocessor (20MHz or faster); System
7; Macintosh micr
ophone; MacTCP
2.0.x (MacTCP
2.0.4 r
ecommended).
Recommended additions
*);For system versions prior to 7.5 install Sound Manager 3.0.
ovide impr
oved audio quality
, plug some ster
eo headphones into your
Macintosh
s speaker socket.
Installing NetPhone
Lo install NetPhone on your Macintosh, drag the contents of the NetPhone disk
onto your har
)d drive. The disk includes the following:
NetPhone
the application pr
ogram.
NetPhone
Alert
a small backgr
)ound application that alerts you when you
eceive an incoming call.
Launching NetPhone
Make sur
e you have a functioning, r
eliable MacTCP
connection.
Establish your MacTCP
%connection. If your connection is thr
ough LocalT
alk or
9Ethernet, you don
t have to do anything special. If you
e using dial-up SLIP
)?,, follow the documentation for your SLIP/PPP
driver softwar
)%FLaunch NetPhone by double clicking on the NetPhone application
s icon.
Frutiger 75 Black
NetPhone
( & ]
ffffff
ffff33
ff33ff
ff3333
33ffff
33ff33
3333ff
333333
wwwwww
UUUUUU
DDDDDD
""""""
Frutiger 65 Bold
Making a call
Frutiger 75 Black
NetPhone
NetPhone
phone numbers
Palatino
Jo place a NetPhone call to another Macintosh you need to know either it
, or pr
eferably it
host name
(which is easier to r
emember).
ou can get this
]Qinformation by asking the person you want to call, just as you might ask them for
their phone number
Alternatively
), you can call someone by connecting to a
]=NetPub and double clicking on their name in the listing (see
page 8
for details on
] NetPubs).
*6CThe host name of a machine is not the same as a person
s email addr
ess, although
they look similar
o find the host name and IP
ess of your Macintosh
( & ]
ffffff
ffff33
ff33ff
ff3333
33ffff
33ff33
3333ff
333333
wwwwww
UUUUUU
DDDDDD
""""""
Choose
New Call
from the
menu
n untitled Call Window appears
nd the
Call Information
dialog opens automatically.
Frutiger 46 LightItalic
lick
Status
line shows you what
!happening as the call progresses.
the call at any time
by clicking
Hangup
Frutiger 66 BoldItalic
ffffff
ffff33
ff33ff
ff3333
33ffff
33ff33
3333ff
333333
wwwwww
UUUUUU
DDDDDD
""""""
Enter the host name of the
machine you wish to call
then click
ffffff
ffff33
ff33ff
ff3333
33ffff
33ff33
3333ff
333333
wwwwww
UUUUUU
DDDDDD
""""""
ffffff
ffff33
ff33ff
ff3333
33ffff
33ff33
3333ff
333333
wwwwww
UUUUUU
DDDDDD
""""""
ffffff
ffff33
ff33ff
ff3333
33ffff
33ff33
3333ff
333333
wwwwww
UUUUUU
DDDDDD
""""""
line
shows the name
of the person
you are calling.
ffffff
ffff33
ff33ff
ff3333
33ffff
33ff33
3333ff
333333
wwwwww
UUUUUU
DDDDDD
""""""
choose
About NetPhone
from the
Apple
NetPhone
s about window appears.
Shows you the host name and IP
#address of your Macintosh. This is
"the information you would give to
someone who wishes to call you.
ffffff
ffff33
ff33ff
ff3333
33ffff
33ff33
3333ff
333333
wwwwww
UUUUUU
DDDDDD
""""""
/Y5YY_Y
The net mask is used when a
call connects to determine if
it is possible to use more
bandwidth than normal,
providing higher quality
audio. See
Frutiger 45 Light
page 11
Frutiger 65 Bold
Expanded call window
Palatino
*O&The expanded call window gives you mor
e contr
ol over your calls.
Frutiger 75 Black
NetPhone
ffffff
ffff33
ff33ff
ff3333
33ffff
33ff33
3333ff
333333
wwwwww
UUUUUU
DDDDDD
""""""
Frutiger 46 LightItalic
Click the triangle to access
the expanded call window.
ffffff
ffff33
ff33ff
ff3333
33ffff
33ff33
3333ff
333333
wwwwww
UUUUUU
DDDDDD
""""""
Shows the name of the
person you are speaking to.
Use this popup
menu to override
NetPhone
s choice
of best encoding.
Shows the number of bits
per second (bps) your
transmitted audio uses, and
also shows what encoding
NetPhone has selected as
for this call.
Drag to set the volume
of incoming audio.
When you are offline,
click the
Helvetica
button
to choose a new
machine to call.
Shows the bit rate
and encoding of
incoming audio.
hows packets of audio
as they arrive and are
played. White gaps
indicate lost audio.
Shows t
he additional time
delay NetPhone
Frutiger 66 BoldItalic
imposes
ensure smooth playback.
ffffff
ffff33
ff33ff
ff3333
33ffff
33ff33
3333ff
333333
wwwwww
UUUUUU
DDDDDD
""""""
( & ]
Receiving a call
*O If you ar
)-=unning NetPhone when someone calls, a new call window appears
]Mand NetPhone makes a ringing sound. The window
s title and icon flash to make
it easy to spot on a cr
owded scr
o answer the call
It is not necessary to r
un NetPhone all the time in or
der to be notified of incoming
calls. NetPhone
g"Alert is a small
faceless
backgr
!ound application that listens for
]8incoming calls and puts up an alert when it detects one.
] NetPhone
0Alert makes a ringing noise until you click the
button. It also
flashes an icon over the
%Apple menu while the call is unanswer
No answer the call, launch NetPhone as normal, and a window will appear for the
incoming call.
If you have a permanent TCP/IP
connection, put NetPhone
Alert (or an alias to
]5it) in the Startup Items folder of your System Folder
. Then you will always be
notified of incoming calls, r
dless of what you
e doing.
]1If you have a dial-up connection, start NetPhone
!Alert by double clicking its icon
in the Finder
F, once your connection is established. Putting it in the Startup Items
]&folder in this case would cause MacTCP
to dial your Internet Service Pr
ovider
]Eevey time you start your machine. Note that you cannot quit NetPhone
Alert. T
stop it fr
om operating you must r
estart your machine.
click
Answer
%f you don
t want to accept the call,
lick
Ignore
. The other party will see a
s%message saying
The call was ignored
ffffff
ffff33
ff33ff
ff3333
33ffff
33ff33
3333ff
333333
wwwwww
UUUUUU
DDDDDD
""""""
line
shows the name
of the person
calling you.
ffffff
ffff33
ff33ff
ff3333
33ffff
33ff33
3333ff
333333
wwwwww
UUUUUU
DDDDDD
""""""
ffffff
ffff33
ff33ff
ff3333
33ffff
33ff33
3333ff
333333
wwwwww
UUUUUU
DDDDDD
""""""
Frutiger 65 Bold
Saving addr
esses
Palatino
$o make it easy to call people you fr
= a'equently contact, or to connect to your
Gfavorite NetPubs, NetPhone lets you save Call and Pub windows as normal
Macintosh documents. W
ith a Call or Pub window fr
ontmost on your scr
Important Note:
esses folder
)U%be in the same folder as the NetPhone
application.
Frutiger 75 Black
NetPhone
( & ]
ffffff
ffff33
ff33ff
ff3333
33ffff
33ff33
3333ff
333333
wwwwww
UUUUUU
DDDDDD
""""""
ffffff
ffff33
ff33ff
ff3333
33ffff
33ff33
3333ff
333333
wwwwww
UUUUUU
DDDDDD
""""""
ffffff
ffff33
ff33ff
ff3333
33ffff
33ff33
3333ff
333333
wwwwww
UUUUUU
DDDDDD
""""""
Frutiger 46 LightItalic
choose
Save Call
Save Pub
from the
menu.
ffffff
ffff33
ff33ff
ff3333
33ffff
33ff33
3333ff
333333
wwwwww
UUUUUU
DDDDDD
""""""
Call and Pub windows
saved in the
Addresses folder
an be opened by selecting
from the
Addresses
menu
ffffff
ffff33
ff33ff
ff3333
33ffff
33ff33
3333ff
333333
wwwwww
UUUUUU
DDDDDD
""""""
or by typing
command
+number,
command+option+number.
Audio window
*O>The audio window lets you see how loud your voice is and contr
ol the level at
which audio is sent.
N o t e
)J!ophone active at the same time. W
ith these machines you
use Push to
alk (see
page 14
for a partial list).
Squelch Level.
Audio is sent
when the audio
level is above this
mark. Drag the
triangle to set the
squelch level.
Audio Level
Shows how loud your
+q* voice is.
Darkens when
audio is being
transmitted
and lightens
when it stops.
Push to Talk
in the
NetPhone
menu is checked
quelch level
disappears and you
must click the
Push to Talk
button to speak, and
release it to listen.
ffffff
ffff33
ff33ff
ff3333
33ffff
33ff33
3333ff
333333
wwwwww
UUUUUU
DDDDDD
""""""
ffffff
ffff33
ff33ff
ff3333
33ffff
33ff33
3333ff
333333
wwwwww
UUUUUU
DDDDDD
""""""
Mute Audio
is checked, no
sound plays out of
your speaker.
ffffff
ffff33
ff33ff
ff3333
33ffff
33ff33
3333ff
333333
wwwwww
UUUUUU
DDDDDD
""""""
ffffff
ffff33
ff33ff
ff3333
33ffff
33ff33
3333ff
333333
wwwwww
UUUUUU
DDDDDD
""""""
ffffff
ffff33
ff33ff
ff3333
33ffff
33ff33
3333ff
333333
wwwwww
UUUUUU
DDDDDD
""""""
Audio Window
is checked, the audio
window is visible.
Frutiger 65 Bold
Personal pr
ofile
Palatino
The personal pr
Aofile dialog lets you set the name that appears in other people
2call windows when you speak to them. It also contr
ols how you appear when
listed on a NetPub.
Frutiger 75 Black
NetPhone
( & ]
Frutiger 46 LightItalic
To call someone
on the list, click
their name
then click
Click and drag the
column dividers to
set column widths.
When you
wish to leave
the NetPub,
click
Leave
ffffff
ffff33
ff33ff
ff3333
33ffff
33ff33
3333ff
333333
wwwwww
UUUUUU
DDDDDD
""""""
ffffff
ffff33
ff33ff
ff3333
33ffff
33ff33
3333ff
333333
wwwwww
UUUUUU
DDDDDD
""""""
Use the Personal Profile
dialog to control how you
appear in NetPub listings
and call windows.
ffffff
ffff33
ff33ff
ff3333
33ffff
33ff33
3333ff
333333
wwwwww
UUUUUU
DDDDDD
""""""
Note:
Changes you
make to your name,
location and other
entries will be used
the next time you
connect to a NetPub.
ffffff
ffff33
ff33ff
ff3333
33ffff
33ff33
3333ff
333333
wwwwww
UUUUUU
DDDDDD
""""""
NetPub
*P:The list of all public NetPubs can be found on the WWW at:
Courier
+/6Ih t t p : / / w w w . e m a g i c . c o m / n e t p u b l i s t . h t m l
]'NetPhone incorporates NetPub technology
"%, which makes it easy to find someone
],to chat with, or to contact someone whose IP
ess changes each time they
]/connect to the Internet (dynamic or server addr
essing).
NetPubs ar
Ce hosted by servers, located both in the US and worldwide. When you
].join a NetPub, you see a list of everyone curr
D#ently connected to that NetPub, and
]'they can all see you. Each NetPub is fr
equented by dif
ent gr
oups of people,
]$which gives each a unique
atmospher
o join a NetPub, select
om the
]AThe list updates dynamically as people join and leave the NetPub.
ffffff
ffff33
ff33ff
ff3333
33ffff
33ff33
3333ff
333333
wwwwww
UUUUUU
DDDDDD
""""""
ffffff
ffff33
ff33ff
ff3333
33ffff
33ff33
3333ff
333333
wwwwww
UUUUUU
DDDDDD
""""""
ffffff
ffff33
ff33ff
ff3333
33ffff
33ff33
3333ff
333333
wwwwww
UUUUUU
DDDDDD
""""""
an untitled Pub Window appears a
Information
dialog opens
automatically.
Enter the NetPub
s host name
then click
lick
When the
connection is
established the list
shows everyone
currently connected
to the NetPub.
ffffff
ffff33
ff33ff
ff3333
33ffff
33ff33
3333ff
333333
wwwwww
UUUUUU
DDDDDD
""""""
Palatino
o decide if they ar
=+e attached to the same LAN, NetPhone compar
es the
machine
)O9esses, using the net mask to decide which piece of the IP
)N$ess denotes the network number (see
page 2
). This scheme will sometimes
/fail, most often when both machines have a SLIP
or PPP
connection to the same
Internet Service Pr
ovider
. In this case, although ther
e is only a low bandwidth
Iconnection, NetPhone may pick a high bandwidth encoding. If this happens,
simply pick a new encoding fr
om the
Frutiger 65 Bold
Encoding
popup (see
page 5
GSM pr
ovides high quality
!, low bandwidth audio, but also r
equir
es mor
)$+ocessing power than some Macintoshes can pr
ovide. Slow machines will
Cexperience choppy or unintelligible audio when GSM is used. If the
This is a slow
machine
&box is checked on either machine, the
Either is slow
line is used to pick
=an outgoing audio encoding. The box is automatically set appr
opriately the first
time you r
un NetPhone, and r
eset when the
Use Default Settings
s button is
clicked.
As a r
)_1ule of thumb, a Macintosh with a 68030 or 68020 r
unning at
less than
25MHz is too slow to use GSM ef
fectively
*If you find NetPhone
s default settings ar
e not appr
opriate for your particular
situation, feel fr
ee to change them.
Calls using the vat pr
otocol
The vat pr
Hotocol does not indicate whether the other party is using a fast or slow
/machine. So, if a call is made using the vat pr
otocol
For mor
1e information on NetPhone
s support of the vat pr
otocol, see
page 13
. For
information on the dif
)-0ent audio encodings that NetPhone supports, see
page 12
Frutiger 75 Black
NetPhone
( & L
ffffff
ffff33
ff33ff
ff3333
33ffff
33ff33
3333ff
333333
wwwwww
UUUUUU
DDDDDD
""""""
Frutiger 46 LightItalic
One of these encodings is
used if both machines are
attached to the same LAN
otherwise one of these
encodings is used.
ffffff
ffff33
ff33ff
ff3333
33ffff
33ff33
3333ff
333333
wwwwww
UUUUUU
DDDDDD
""""""
and both machines are on
the same physical network,
then this encoding is used.
Otherwise, this
encoding is used.
ences
The pr
)?4ences dialog lets you change the way NetPhone works.
Use best encoding
*) NetPhone was designed to work ef
(fectively over low
bandwidth 14.4k modem
],connections. NetPhone also works over Local
ea Networks or
s, which
]Ehave much higher capacities and do not need audio to be tightly compr
essed.
When you first cr
eate a call window
(, the outoging encoding popup is set to
best encoding
. Information in the pr
)?'ences dialog is then used to pick which
]Gactual encoding to use at the time a call connects. If both machines ar
e on the
]9same LAN, then a higher bandwidth encoding can be used, r
esulting in high
]1quality audio and less strain on the machine
ocessor
+ Check this box to have NetPhone
automatically go online when
someone calls you.
ffffff
ffff33
ff33ff
ff3333
33ffff
33ff33
3333ff
333333
wwwwww
UUUUUU
DDDDDD
""""""
If this box is checked,
NetPhone makes a ringing
sound when a call arrives.
Use this popup menu to choose
what sound NetPhone uses when
L$ringing. To add a new sound, record
it in the Sound Control Panel.
ffffff
ffff33
ff33ff
ff3333
33ffff
33ff33
3333ff
333333
wwwwww
UUUUUU
DDDDDD
""""""
Check this box to prevent
NetPhone from ringing when a
new call arrives and you are
already speaking to someone.
ffffff
ffff33
ff33ff
ff3333
33ffff
33ff33
3333ff
333333
wwwwww
UUUUUU
DDDDDD
""""""
ffffff
ffff33
ff33ff
ff3333
33ffff
33ff33
3333ff
333333
wwwwww
UUUUUU
DDDDDD
""""""
Click
to accept
your changes
or click
Cancel
leave the settings
unchanged.
Click
Use Default Settings
to restore NetPhone
recommended settings.
Frutiger 65 Bold
NetPhone and vat
Palatino
*O=Originating in the UNIX world, vat is a de facto audio confer
encing standar
d. The
popular video-confer
encing softwar
'e CU-SeeMe uses vat to carry it
s audio
>channels, so you can use NetPhone to call CU-SeeMe users and r
eflectors.
o make a call using the vat pr
otocol
HNetPhone supports the four most common audio encodings used by vat: GSM,
Intel DVI, Raw
, and
-. GSM-encoded vat audio will fit over a 19.2k
f o r
(information on audio encoding formats).
*6#NetPhone supports vat
s default UDP
T"ports (3456 and 3457), with confer
ence ID
0. Ther
)t e is curr
+ently no way for NetPhone to use the vat pr
otocol with dif
ports or confer
ence IDs.
@When a vat call disconnects, NetPhone waits for 15 seconds befor
e allowing you
Oto use that window again, so that any vat packets still in transit have time to
expir
Frutiger 75 Black
NetPhone
Audio encodings
e is not the space her
e to fully intr
'oduce the principles underlying digital
]#audio. If you understand the terms
sample size
sample rate
bit rate
]Mfollowing information will help you decide how to pick alternate encodings to
suit your needs. V
1isit the Electric Magic WWW site for links to mor
e information
on audio encoding techniques.
*7MAudio on the Macintosh usually operates at a 22kHz sample rate, with a sample
size of 8 bits. T
o send this in r
eal time r
equir
es sending 22 kilo
bytes
per second
]0(22kBps) which equates to a bit rate of 176 kilo
per second (176kbps). CD
]7audio uses a 44.1kHz sample rate, 16 bits per sample. W
ith two audio channels,
)<Heo CD audio
s bit rate is 1.4Mbps. The digital telephone network samples
]<audio at 8kHz, with 8 bit samples, for a bit rate of 64kbps.
)1*normal 14.4k modem connection can move at
14.4kbps. NetPhone
ovides several dif
)-)ent audio encoding schemes, which use dif
ent amounts
of bandwidth and pr
ocessing power
. For most uses CVSD r
unning at 10kHz or
GSM at 6kHz pr
ovide excellent clarity
, with very low bandwidth r
equir
ements. If
you hear dr
;opouts in a conversation, switch to a lower sampling rate (
at 8kHz or GSM at 4kHz).
)vCis an excellent general purpose audio encoding method. Needing very
] little pr
ocessing power
, it works on any Macintosh fr
om the LC on up. CVSD
s 8:1
compr
ession ratio, combined with pr
'oprietary audio enhancement algorithms,
)$.ovides good audio clarity with low bandwidth r
equir
ements
Global System for Mobile T
elecommunications
(GSM) is Eur
s most popular
)$=otocol for digital cellular telephones. Usually it is very pr
ocessor
-intensive, but
]Kthe implementation in NetPhone has been crafted to operate on a 25MHz 68030
** or better
. Some backgr
9ound material on the encoding
s operation can be found in
Dr Dobbs Journal
December 1994,
pp. 30
] Intel DVI
** Intel DVI
#encodes each sample with 4 bits, pr
oviding a 2:1 compr
ession ratio over
]<normal 8-bit audio. Using Intel DVI at an 8kHz sample rate r
equir
)W es 32kbps
bandwidth.
Raw and
)N%sends every sample as an 8-bit number
, , so at an 8kHz sample rate it r
equir
64kbps bandwidth.
is the standar
<d encoding used by digital telephone networks in the U.S. (a
variant called
A-Law is used in Eur
.ope).
-Law encodes 13-bit samples into 8 bits
]Rusing a logarithmic scale. Most Macintoshes have only 8-bit audio capabilities, so
]Icommunications. It is a common format in the UNIX world, and is needed to
inter
operate with vat.
( & L
Frutiger 46 LightItalic
pen a call window
Call Information
dialog by clicking the
button
ffffff
ffff33
ff33ff
ff3333
33ffff
33ff33
3333ff
333333
wwwwww
UUUUUU
DDDDDD
""""""
enter the host name of the
machine you wish to call
then click
Frutiger 66 BoldItalic
ffffff
ffff33
ff33ff
ff3333
33ffff
33ff33
3333ff
333333
wwwwww
UUUUUU
DDDDDD
""""""
select
Frutiger 45 Light
from the
Communications Protocol
popup
Indicates that this
call will use the
vat protocol to
communicate.
ffffff
ffff33
ff33ff
ff3333
33ffff
33ff33
3333ff
333333
wwwwww
UUUUUU
DDDDDD
""""""
Frutiger 65 Bold
MacPPP
Palatino
The PPP
)$ otocol pr
ovides for the PPP
]*server and client to periodically check on
Lthe status of the connection by sending echo packets. When the connection is
*)Lheavily loaded for an extended period of time, as when using NetPhone, these
**9echo packets may be lost causing your connection to be dr
opped pr
ematur
)$)event this happening go to the Config PPP
contr
ol panel and set the
popup menu to
Quadra A
V GeoPort
On Quadra
V machines, the har
e that r
)q"uns the GeoPort modem is also used
)FFd sound. So on those machines you will not be able to use the built-in
9sound input socket at the same time as the GeoPort modem.
PowerMac GeoPort
On Power Macs the main pr
ocessor is used to contr
ol the signal being sent down
9the phone line, which consumes a significant amount of pr
ocessing power
. When
using NetPhone, ther
e may not be enough pr
"ocessor power available to use mor
intensive audio compr
B0ession. If you experience choppy audio, make sur
e that the
This is a slow machine box
in the pr
ences dialog is checked.
)z ess modem
)$:ocessor do much of the work normally done by a modem
s har
e. On a
/68030
based Macintosh, as much as 30% of the pr
ocessor
s time is taken up with
unning the Expr
ess modem.
ou may experience pr
oblems using NetPhone with
an Expr
%ess modem on 68030
based Macintoshes.
+In general, if you expect to use NetPhone r
egularly
, we suggest you use an
external modem in pr
ence to a GeoPort or Expr
ess modem.
Frutiger 75 Black
NetPhone
Compatibility issues
ophones
])Macintosh built
in sound input sockets ar
L!e one of two types, line
level or
ophone
level.
level sockets ar
$e used on Power Macintoshes, Quadra
Vs, and most later
models.
ophone
level sockets ar
e used on older models.
use a micr
;ophone which generates a signal level that matches what the
sound input socket r
equir
es. Putting a micr
:%ophone level signal into a line
level
socket will r
esult in no audio being r
&ecognized by the Macintosh. Conversely
]'putting a line
level signal into a micr
ophone
level socket will r
esult in extr
emely
]$loud and distorted audio. The newer
Apple PlainT
alk micr
ophone generates a
] line
level signal. The original
Apple
silver dollar
cular micr
ophone puts out
a micr
ophone
level signal.
If you do not have the corr
Apple micr
!ophone, it is possible to use any
ophone, headset or handset pr
ovided it pr
oduces the corr
ect signal level.
can use a micr
ophone pr
amp to raise a micr
¥"ophone
level signal to line
level.
] Push to T
alk and half-duplex sound har
]/NetPhone fully supports full-duplex audio, wher
e you speak and listen at the
]0same time, just like a normal telephone. However
, some models of Macintosh
have a version of the
"Apple Sound Chip which switches of
f the speaker when the
)J,ophone is active. So although NetPhone is pr
ocessing incoming audio, it
cannot be hear
d until the micr
m-ophone is deactivated. On these machines, you
check
in the
menu, otherwise you will not be
]Oable to hear other people at all. If your Macintosh model is in the list below
ensur
e that
is checked.
&PowerBook 1xx, Duo 210, 230, 250, 270c
LC, LCII, IIsi, IIvx, IIvi
LC475, Performa 47x, 46x,
LC630, Quadra 630, Performa 63x
ou can cir
Ccumvent this behavior by installing an external sound input device,
such as a MacRecor
)5%, QuickCam or NuBus digital audio car
Serial port sound input devices
Sound input devices which ar
m.e installed by plugging into a serial port may
)$9oduce choppy audio when used in conjunction with a LocalT
alk network.
LocalT
)mOalk is only able to operate because it is tightly integrated into the operating
system, and disables interr
3upts for extended periods of time when transmitting
)=5eceiving data. Serial port sound input devices need r
egular servicing by the
operating system, and if interr
upts ar
)y"e disabled for too long data is dr
opped,
]!causing choppy audio. Ethernet, T
(oken Ring and modem-based connections do
]!not generally cause this behavior
( & L
Frutiger 65 Bold
Contacting
Electric Magic Company
Palatino
*OLThe best way to stay up to date with NetPhone is to periodically visit our W
ide W
eb Site at
Courier
+h t t p : / / w w w . e m a g i c . c o m /
. It pr
ovides information about the
!latest version of NetPhone, and r
0egularly updated answers to technical questions.
Contact Information
Phone:
#(800) 987 2001 or +1 (415) 759 4100
+1 (415) 566 6615
Mailing addr
209 Downey Str
eet, San Francisco, CA
17-4421
3ou may also contact us via email. For the fastest r
esponse please use the
opriate addr
echnical support:
netphone-support@emagic.com
ders:
netphone-or
ders@emagic.com
General:
info@emagic.com
edits
Softwar
e design:
ew Gr
een, Denise Myers
oduct management:
Denise Myers
Marketing coor
dinator:
Christen Br
Graphic Design:
Denise Myers,
ew Gr
een, Diane Pr
essler
Frutiger 75 Black
NetPhone
( & L
NetPhone and the WWW
*O The WWW r
efers to services with
Uniform Resour
ce Locators
(URL). Using a URL,
]7any service or page can be uniquely and unambiguously r
enced and accessed
om anywher
e on the Internet.
Netscape
The WWW br
owser
Netscape
can be configur
ed to r
ecognize new types of URL,
]#and to pass them onto other softwar
e when they
e clicked on a page. NetPhone
]"understands two new kinds of URL:
n e t p h o n e
n e t p u b
URLs like the
following:
)%Gn e t p h o n e : / / r a d i o n e t p h o n e . e m a g i c . c o m /
p , which causes NetPhone to place
a NetPhone call to the machine
radionetphone.emagic.com
)%5n e t p u b : / / n e t p u b . e m a g i c . c o m /
(which causes NetPhone to join the NetPub
hosted by
netpub.emagic.com
o configur
e NetScape to r
ecognize these URLs, ensur
AppleScript is installed
on your machine, then r
un the following
AppleScript:
)% compiled
CAppleScript applet is included with NetPhone that does this for you
automatically
A. Simply go to the NetPhone application
s folder and double click
Register NetPhone with Netscape
icon,
then locate Netscape if pr
ompted to do so. T
s o test that it has worked, point
Netscape at
Uh t t p : / / w w w . e m a g i c . c o m / n e t p h o n e / u r l t e s t . h t m l
, and follow
] the instr
uctions you find ther
Other applications
g i n g
standar
dization ef
fort to make the inter
operation of Internet
elated applications
as seamless as possible.
Internet Config
&, an application by Peter N. Lewis and
Quinn, manages Internet pr
)>/ences and configuration information for several
)D#ent Internet applications, with mor
e on the way
Any application which is
Internet Config
savvy
, and r
)g2ecognizes URLs, will automatically launch NetPhone
]"when you click on a NetPhone URL.
*6"Now you can put your NetPhone addr
(ess at the bottom of you email messages,
right next to your phone number
1, and have people call you with just the click of
their mouse!
ffffff
ffff33
ff33ff
ff3333
33ffff
33ff33
3333ff
333333
wwwwww
UUUUUU
DDDDDD
""""""
Frutiger 75 Black
$&()+
p 0p`P
@%)K.I2
,)+>B
`@P0P
"*$!'/
,"'0!
`8XP 0P
PP0P
$&()+
@%)K.I2
@ 8_P
,)+>B
"*$!'/
,"'0!
@@ p_
@@ p_
@@ p_
@@ p_
N^. temp.0001
N^ _P
Andrew Green
Electric Magic Company
QuarkXPress
ffffff
ffff33
ff33ff
ff3333
33ffff
33ff33
3333ff
333333
wwwwww
UUUUUU
DDDDDD
""""""
ffffff
ffff33
ff33ff
ff3333
33ffff
33ff33
3333ff
333333
wwwwww
UUUUUU
DDDDDD
""""""
ffffff
ffff33
ff33ff
ff3333
33ffff
33ff33
3333ff
333333
wwwwww
UUUUUU
DDDDDD
""""""
ffffff
ffff33
ff33ff
ff3333
33ffff
33ff33
3333ff
333333
wwwwww
UUUUUU
DDDDDD
""""""
ffffff
ffff33
ff33ff
ff3333
33ffff
33ff33
3333ff
333333
wwwwww
UUUUUU
DDDDDD
""""""
ffffff
ffff33
ff33ff
ff3333
33ffff
33ff33
3333ff
333333
wwwwww
UUUUUU
DDDDDD
""""""
Chicago
Palatino
Helvetica
Courier9s
Frutiger 75 Black9t
Frutiger 66 BoldItalic9u
Frutiger 65 Bold9x
Frutiger 46 LightItalic9y
Frutiger 45 Light
ffffff
ffff33
ff33ff
ff3333
33ffff
33ff33
3333ff
333333
wwwwww
UUUUUU
DDDDDD
""""""
ffffff
ffff33
ff33ff
ff3333
33ffff
33ff33
3333ff
333333
wwwwww
UUUUUU
DDDDDD
""""""
_>r+_
_>r+_
y1|Dy,|L
y1|Dy,|L
y1|Dy,|L
as|Daj|L
as|Daj|L
as|Daj|L
as|Daj|L
as|Daj|L
LpdIL
:LpdIL
_VuH
ffffff
ffff33
ff33ff
ff3333
33ffff
33ff33
3333ff
333333
wwwwww
UUUUUU
DDDDDD
""""""
ffffff
ffff33
ff33ff
ff3333
33ffff
33ff33
3333ff
333333
wwwwww
UUUUUU
DDDDDD
""""""
ffffff
ffff33
ff33ff
ff3333
33ffff
33ff33
3333ff
333333
wwwwww
UUUUUU
DDDDDD
""""""
rPREC
~PRVS