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InPerson(1)							   InPerson(1)


NAME    [Toc]    [Back]

     inperson -	InPerson desktop conferencing for SGI workstations

DESCRIPTION    [Toc]    [Back]

     InPersonTM	is a multimedia	desktop	conferencing tool for SGI workstations
     such as the Indy, Indigo and Indigo2.  Each conference includes audio and
     either video or a static image of the participant.	Use of shared
     whiteboard	and shared shelf is optional on	a per-conference basis.	 Other
     SGI systems that lack audio and/or	video hardware can still use the
     shared whiteboard.

     You can place a conference	on hold, or can	look and listen	to a
     conference	without	transmitting any audio and video. This allows you to
     simultaneously work on urgent projects while monitoring the progress of a
     conference.  This also allows you to hold an impromptu private
     conversation in your office without disturbing the	ongoing	conference.

     Each conference can have 2	to 8 participants when using Indy R4400SC
     models.  Due to the use of	multicasting, total network bandwidth usage
     scales linearly with the number of	participants.

     The InPerson product consists of several programs:	the phone, the
     conference	view, and the whiteboard.  The inperson	program	is the phone
     tool that you see on your desktop.	 The view program opens	the main
     conference	window.	 It manages all	audio and video	actions, the shared
     shelf, and	the whiteboard.	 The whiteboard	program	is opened by the view
     when a user asks to open it. These	two programs are started on behalf of
     the user by inperson.

USAGE    [Toc]    [Back]

     Please see	the on-line InPerson User's Guide and the InPerson Setup and
     Administration Guide for detailed instructions on the use of this
     product. What follows is a	brief summary.

   Placing and Receiving Calls    [Toc]    [Back]
     To	place or receive calls,	you must run the inperson program.  To run
     inperson, double-click its	icon from the Icon Catalog's Collaboration
     page or type in a shell:

	       % inperson


     When you run inperson, the	image of an old-fashioned telephone appears on
     your desktop. The phone rings and flashes when someone is calling you. To
     answer a call, place the cursor over the phone; then click	the left mouse
     button. To	make a call, drag group	or user	icons over the phone image and
     release the mouse button.

   Participating in a Conference    [Toc]    [Back]
     The conferencing window appears when you participate in a call. By
     default, it displays video	of each	person participating in	the
     conference. Participant on	systems	that do	not supports video are



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InPerson(1)							   InPerson(1)



     represented by a static image. See	"Faces Database" section below to
     learn how to select a static image.

     The conferencing window can expand	to show	two other regions - the
     whiteboard	and the	shelf. To open the whiteboard, choose "Open
     whiteboard" from the Call menu. To	open the shelf,	choose "Open shelf"
     from the Call menu.

   About the Whiteboard    [Toc]    [Back]
     The whiteboard is similar to the whiteboard or chalkboard you might find
     in	a conference room. Each	person in the conference has a unique marker
     that she or he can	use to sketch or write notes on	the board. People can
     also take screen and video	snapshots and place them on the	board.	You
     can bring in 3D Inventor models, text and RGB image files from the	Import
     menu, too.	 You can save your work	for a later conference,	or print it to
     get a hard	copy.

     When placing images and 3D, you can stretch their size by clicking	and
     dragging the mouse.  Then,	subsequently move any object by	clicking on it
     and dragging.  You	can also `lasso' objects with the selection tool.
     When a 3D object is selected, scale and rotation handles show up.	The
     corner squares allow you to uniformly scale the object, while the round
     rotation knobs allow you to rotate	it.  Use the shift key to get fixed
     rotation about an axis.

     The toolbar along the left	edge of	the whiteboard page has	tools for
     drawing, typing, taking snapshots,	selecting colors, text styles, and
     line styles, and adding new pages.	 If you	wave your cursor over an
     object on the whiteboard, the text	under the person's video image will
     highlight,	indicating who drew it.


   About the Shelf    [Toc]    [Back]
     The shelf is similar to the shelves that are used within the IRIX
     Interactive Desktop(TM) user environment.	Files placed on	the shelf are
     instantly accessible to all persons in the	conference.  You can bring the
     file to the local file system by clicking on and dragging the icon	from
     the shelf to an fm	(1) view of one	of the local directories.  Dragging
     the icon to the desktop puts only a link to the file on the desktop. The
     actual file may not be accessible later so	if you want to save the	file,
     drag the file icon	to a local directory.

     You can double-click over an icon on the shelf to open it,	as with	any
     IRIX Interactive Desktop icon.  If	the icon is a folder, a	directory view
     is	launched for that folder.  For any other category of icon you may be
     notified that InPerson does not know how to run that application shared
     between the conference participants and asked if you want to run it
     standalone.

     When InPerson is unable to	access a file via NFS, it makes	a local
     temporary copy of the file	in a shadow directory so as to preserve	all of
     the file operation	semantics of IRIX Interactive Desktop icons.  All



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InPerson(1)							   InPerson(1)



     temporary copies and the shadow directory are removed at the end of a
     call.  The	location of the	shadow directory is controlled by an X
     resource (see below) and by the INBOX_PATH	environment variable.

     If	the environment	variable INBOX_PATH is set to a	directory path,
     InPerson uses that	directory as the shadow	directory but won't delete
     files from	it.  When a file is dropped on the shelf by another person in
     the conference, InPerson will check to see	if that	file has been
     transfered	in advance by looking for a file of the	same name in the INBOX
     directory.	 If so,	then the file is referenced on the shared shelf
     immediately.  Files copied	into the INBOX directory (before or during a
     conference) will not be removed.  This is the responsibility of the user.

     The shelf will only allow you to drop files which are local to your own
     system or are accessible to you via NFS.

CUSTOMIZATION    [Toc]    [Back]

     There are two control panels that let you set preferences to customize
     the behavior of the phone and of a	running	conference. You	can also save
     the preferences as	the default for	future calls into the InPerson file in
     the the $HOME/.desktop-`hostname` directory.

     To	access the phone's control panels, place the cursor over the phone,
     and then press the	right mouse button to bring the	menu. Choose "Ring
     control panel..." from the	menu to	change the incoming and	outgoing
     ringing sounds.  Chose "Call preferences panel..."	to change video	and
     network parameters	and is described below.	 On each panel,	the "Save"
     button saves the preferences into the InPerson file. The "OK" button
     applies the preferences to	future incoming	and outgoing calls but not the
     current call.

     The InPerson Call window also provides a control panel under the Tools
     menu that you can use to change the characteristics of the	call in
     progress.

     The Call control panel, which is also accessible from the phone, has two
     sections.	The Video Controls lets	you change the size of the video
     images that are shown in the participant display area.  The Vanity	View
     buttons controls whether images from your camera are shown	in the
     participant display area and whether the view is shown as other see it or
     mirrored.	The Call Controls section controls outgoing video, compression
     and network parameters.  if the Outgoing Video button is set to "Live",
     InPerson will will	capture	and transmit video if video hardware is
     available.	If set to "Static Image", InPerson will	always use a static
     image in place of video.  The most	common reason to change	this setting
     to	"Static	Image" is to decrease the network bandwidth required for a
     call.

     InPerson automatically choses the appropriate video and audio compression
     schemes based on network bandwidth	and the	user's performance preference.
     The control panel lets you	select the following information:




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InPerson(1)							   InPerson(1)



     o	performance preference:	In the presence	of network congestion,
	InPerson can prefer video quality (and degrade frame rate) or prefer
	frame rate (and	degrade	video quality).

     o	network	bandwidth type:	 ISDN basic rate, T1/E1, LAN, (e.g.,
	Ethernet), high-speed LANs (e.g., FDDI/CDDI, ATM).

     o	finer control bandwidth	slider:	it lets	you select the bandwidth
	target within the bandwidth range specified by the network type.

     For example, if you select	the LAN	network	type, the bandwidth range is
     0-5000 kbps. You can move the slider to use more or less bandwidth.
     InPerson then choses a video compression scheme that meets	that target.

     For a given bandwidth, two	compression schemes might be possible:	one
     has a better image	quality	but a slower update(frame) rate, while the
     other has a faster	frame rate but lesser image quality.  The Performance
     Preferences button	lets you choose	which characteristic is	more
     important.

   Resources    [Toc]    [Back]
     There are some additional preferences that	control	the behavior of
     InPerson that are not on the control panels. Advanced users can change
     these resources by	editing	the InPerson user configuration	file.

     The default X11 resources file /usr/lib/X11/app-defaults/InPerson
     contains a	few resources that can be customized at	the beginning of the
     file.  You	can edit this file as root to make changes for all users on
     the system. If you	want your private customizations, copy the file	to
     $HOME/.desktop-`hostname`/InPerson, then following	the instructions at
     the beginning of the file.

     InPerson*facesPath	(Faces database	path)
	  This resource	controls which directories InPerson searches when
	  looking for static images of user's faces. InPerson always checks
	  $HOME/.icons/login.icon first, and then for each directory specified
	  in the faces path, looks in <dir>/$USERNAME. Default value is
	  "/usr/local/lib/faces:/usr/lib/faces". See the section below,	"Faces
	  Database", on	adding a face file.

     InPerson*defaultFace (Default face	image)
	  This resource	controls what face image is displayed if the user does
	  not have an entry in the faces database. Default is "inperson".

     InPerson*participantBox.initialPlacement (Participant Layout)
	  This resource	controls whether the images of participants in the
	  conference are placed	horizontally or	vertically in the InPerson
	  Call window.	Possible values	are "VERTICAL" and "HORIZONTAL".
	  Default is "VERTICAL".






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InPerson(1)							   InPerson(1)



     InPerson*shelf.shadowDir (Location	of directory for shadowing the shelf)
	  This resource	controls what directory	InPerson will use when it
	  needs	to make	copies of files	that are to appear on the shelf.  The
	  default value	is "$HOME/.InPerson.shelf".  InPerson appends "." and
	  six more characters to this name to make a unique name for each
	  call.	 This resource is overridden by	the INBOX_PATH environment
	  variable (see	above).

     InPerson*shelf.xferTimeMsgThreshold (Threshold for	transfer time notice)
	  When you drop	files on the shelf, it calculates the time to transfer
	  the files to the other participants based on the current audio and
	  video	bandwidths. If the transfer time exceeds this threshold, the
	  shelf	will display a dialog box with the time	and a choice to
	  continue or cancel the transfer.  The	default	value is 60 seconds.
	  Set the resource to 0	to disable the calculation and the dialog box.

     InPerson*videoDevice (Video device	name)
	  For Indy systems that	have the built-in VINO video hardware and the
	  optional IndyVideo board, this resource lets select which one	to
	  use.	The default is "vino".

     InPerson*keyFrameInterval (Video key frame	interval)
	  This resource	controls how often a complete video frame is sent.
	  Normally, HDCC compression just sends	the portion of the video frame
	  that changed.	 Periodically, HDCC sends out the complete video
	  frame, regardless of whether or not it is changed, If	a network
	  packet containing compressed video is	lost, that portion of the
	  image	will not be updated until it changes again, or until the next
	  key frame is sent.  Default value is 15 seconds; a useful range is
	  10-600 seconds with 0	to disable it.	Most common reason to decrease
	  this resource	from the default value is to improve image quality on
	  a network with a high	packet loss rate.  Most	common reason to
	  increase this	resource from the default value	is to decrease the
	  network bandwidth required for video.

     InPerson*videoRate	(Video frame rate)
	  Controls the maximum frame rate for capturing	video when using LANs
	  or slower networks. The default is 15	frames per second.

     InPerson*videoRateHSLAN (Video frame rate for high-speed LAN)
	  InPerson can send uncompressed video at 30 frames per	second only if
	  your machine is attached to a	high-speed LAN such as FDDI or ATM.
	  You must configure the networkMTU resource as	described above	and
	  select the "Hi-speed LAN and "Optimize Frame Rate" buttons in	the
	  Call preferences Panel to enable this	feature.  The default value is
	  30 frames per	second.

     InPerson*audioInputSource (Audio source)
	  This resource	sets the audio input source to the microphone ("mic"),
	  line-in ("line") or the current apanel(1) setting ("default").  If
	  not specified, the input source is set to the	microphone.  The call
	  saves	the current apanel(1) value in your resource file when the



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InPerson(1)							   InPerson(1)



	  call exits.

     InPerson*audioLeftAtten (Audio input levels)
	  and InPerson*audioRightAtten.	 These resources set the initial audio
	  input	level to the specified values. The range is 255	(soft) to 0
	  (loud).  The call saves the current apanel(1)	values in your
	  resource file	when the call exits.

     InPerson*audioAutoRateConversion (Audio sample rate conversion)
	  This resource	enables	or disables automatic sample rate conversion
	  when playing audio from the conference.  For example,	if you CDman
	  running, and this resource is	True, the call will produce audio at
	  the same sampling rate used by CDman.	 If the	resource is False, the
	  call will change the audio output sample rate	to match the current
	  audio	compression scheme.

     InPerson*audioInputGain (Audio input gain)
	  This resource	boosts the level of the	audio from the microphone.
	  The most common reason to change this	because	other conference
	  participants have trouble hearing you	even with your audio input
	  level	set to its maximum value. It is	a integer value; default is 2.
	  Valid	range is 1 to 8.

     InPerson*audioSuppressSilence (Audio silence suppression)
	  By default, InPerson detects when you're not talking to avoid
	  sending unnecessary audio packets, thus saving network bandwidth.
	  The silence detection	algorithm may not work well in noisy
	  environments and depends on the audio	input level set	by apanel(1).
	  Set to false to disable.

     InPerson*fontNumber (Whiteboard default font)
	  The whiteboard has four font choices,	selectable via a menu.	This
	  resource specifies the default choice.  Range: 0 to 3, with 0	as the
	  default.

     InPerson*drawingLineWidth (Whiteboard default line	width)
	  Specifies the	default	line width for the whiteboard.	Range: 0 to 3,
	  with 2 as the	default.

     InPerson*showDrawer (Display who-drew-what	on the whiteboard)
	  Enables whether or not the whiteboard	displays the name of the
	  person who drew the object pointed to	by the mouse.  Values: "on"
	  (default) or "off".

     InPerson*imageDirectory (Default location for images)
	  This resource	specifies the initial directory	shown by the file
	  browser when importing an image.  Default is /usr/share/data/images.

     InPerson*textFileDirectory	(Default location for text files)
	  This resource	specifies the initial directory	shown by the file
	  browser when importing a text	file.  Default is your home directory.




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InPerson(1)							   InPerson(1)



     InPerson*modelFileDirectory (Default location for 3D models)
	  This resource	specifies the initial directory	shown by the file
	  browser when importing a model.  Default is /usr/share/data/models.

     InPerson*networkMTU (Conference network packet size)
	  Lets you specify the underlying network packet size.	If you have a
	  network that is composed entirely of FDDI rings, set this value to
	  the FDDI MTU of 4352 (see the	output of /usr/etc/netstat  -i for
	  appropriate MTU values).  See	the comments in	the app-defaults file
	  for more details.

     InPerson*multicastTTL (Conference network range)
	  This resource	affects	how how	widely distributed the multicast
	  packets will be through the network. It is specified in hops;
	  maximum number of IP multicast routers between any two participants
	  in a conference.  Default value is 10. Range is 1 (meaning local net
	  only)	to 63.

     InPerson*networkPortMin/Max (Conference network port range)
	  If you want to use InPerson through a	network	packet
	  filter/firewall, these two resources let you specify the range of
	  ports	used for audio and video UDP packets and for whiteboard	TCP
	  packets.  InPerson RPC packets use the TCP port that is defined in
	  the file /etc/services for the service named "sgi_iphone".  If that
	  service is not defined, InPerson RPC packets use TCP port 32769.
	  Make sure the	port is	not in the range used by networkPortMin	and
	  networkPortMax.

   Faces Database    [Toc]    [Back]
     inperson displays static face images of users in several circumstances.
     When an incoming call is ringing, the a face image	is displayed
     alternately with the phone	icon to	indicate who is	calling. During	a
     call, a static face image is displayed for	users without video hardware.
     This static face image is in the same format and location(s) as used by
     clogin(1).	 If inperson cannot find a face	image for a specific user, it
     uses the face image for "inperson", if it exists.

     To	add yourself to	the faces database, run	capture(1) on a	workstation
     equipped with video. Pose in front	of the camera, and use the image
     snapshot feature to create	a quarter-sized	static image.  Then copy that
     file to one of the	faces locations	as specified by	clogin(1).

NOTES    [Toc]    [Back]

     The audio input sampling rate is automatically set	to the sampling	rate
     used by the audio compression scheme. The default scheme uses a 16kHz
     rate. The behavior	for the	audio output sampling rate depends on the
     audioAutoRateConversion resource described	above.

     inperson's	on-line	help requires the InPerson User's Guide	and the	Setup
     & Administration Guide to be installed.





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InPerson(1)							   InPerson(1)


FILES    [Toc]    [Back]

     /usr/sbin/inperson
     /usr/lib/X11/app-defaults/InPerson
     $HOME/.desktop-`hostname`/InPerson
     $HOME/.InPerson.aliases

BUGS    [Toc]    [Back]

     Please see	the InPerson release notes for known bugs and workarounds.

     If	the original sender of a file on the shelf leaves the conference and
     another participant sends that file on to a newly joined participant, the
     newly joined participant will only	be able	to access the file if it is
     available via NFS.	The workaround is for the user wishing to send the
     file, to drag the file to a local directory view then drop	the new	local
     copy on the shelf.


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