FGCom (before 3.0): Difference between revisions

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*flying in groups  (see e.g. the '''Forum Multiplayer Events'''):
*flying in groups  (see e.g. the '''Forum Multiplayer Events'''):
**invite friends to a guided sightseeing tour in your most beloved area or do “Fly In's”
**invite friends to a guided sightseeing tour in your most beloved area or do “Fly In's”
**do military training like “Air-Air-Refuelling”, “Dog fights”, “Escort flights”, etc.  
**do military training like [[Howto: Air-Air Refueling|“Air-Air-Refuelling”]], “Dog fights”, “Escort flights”, etc.  
*offering additional services at an airport like ATC, Snowplows, Pushbacks, etc. (Visit e.g. KSFO on a weekend – sorry enough: Most communication is still by keyboard - we are sure that will change!)
*offering additional services at an airport like [[Air traffic control|ATC]], [[Vehicle|Snowplows, Pushbacks]], [[FlightGear Race|Racing-Events]] etc.
*have a real time flightraing (e.g. pilot in Hongkong, teacher in Sydney) or just ask for online support during flight or just ask somebody flying a plane of interest about specifics
*have a [[Dual control|real time flighttraing]] (e.g. pilot in Hongkong, teacher in Sydney) or do [[Soaring|Glider-towing]] or just ask for on-line support during flight or just ask somebody flying a plane of interest about specifics
*or e.g. just sit in a cockpit e.g. in Germany while sightseeing San Francisco in a C172, voice-chatting with a Texan in a plan I dreamed of as a boy (Super Constellation), and both getting informations from a New Zealand guy (it shall be a wonderful island – but do real people live there? He said: Yes!!).
*or e.g. just sit in a cockpit e.g. in Germany while sightseeing San Francisco in a C172, voice-chatting with a Texan in a plan I dreamed of as a boy (Super Constellation), and both getting informations from a New Zealand guy (it shall be a wonderful island – but do real people live there? He said: Yes!!).
*etc.
*etc.
In the future FGCom surely will extend further and surley will get a “Speech to Text” capability in order to also use the Text-based standard ATC-routines inside FlightGear (see also [[Development]]).
You can even use it in models without radios - just use the standard FlightGear menu --> Equipment --> Radio Settings.<br>
 
In the future FGCom surely will extend further and surely will get a “Speech to Text” capability in order to also integrate the Text-based automated ATC-routines inside FlightGear.


==Status==
==Status==
*'''March, 2009:'''
*'''March, 2009:'''
<div style="font-size:150%"><span style="color:magenta">'''This wiki-Page is undergoing a Major Revision'''</span></div>
Adding User-Informations for installing, using, maintaining FGCOM on different platforms.
 
Since the new version Nov.2008 the usage of FGCom is picking up rapidly – but so are also the confusions of many “Computer-Non-Professionals” trying to use it. We hope to help users by adding many more user-specific informations, like e.g. installation on different Operating Systems, testing, operating, informing, and “how to get the most out of it”. The existing more tech. Informations will remain but will be restructured. We decided to do it online in the “wiki-fashion” so that others can benefit as soon as possible.
This major update will take about a month (or 2).
 
--[[User:Jomo|Jomo]] 12:46, 3 March 2009 (EST)
 


*'''18 November, 2008:'''
*'''18 November, 2008:'''

Revision as of 10:41, 28 March 2009

Cleanup.png This article may require cleanup to meet the quality standards of the wiki. Please improve this article if you can.

FGCom is an addon for FlightGear. With FGCom (and the infrastructure behind it), FlightGear now has a realtime voice communication system which enriches the FlightGear capabilities, especially for Multiplayer events, like:

  • flying in groups (see e.g. the Forum Multiplayer Events):
    • invite friends to a guided sightseeing tour in your most beloved area or do “Fly In's”
    • do military training like “Air-Air-Refuelling”, “Dog fights”, “Escort flights”, etc.
  • offering additional services at an airport like ATC, Snowplows, Pushbacks, Racing-Events etc.
  • have a real time flighttraing (e.g. pilot in Hongkong, teacher in Sydney) or do Glider-towing or just ask for on-line support during flight or just ask somebody flying a plane of interest about specifics
  • or e.g. just sit in a cockpit e.g. in Germany while sightseeing San Francisco in a C172, voice-chatting with a Texan in a plan I dreamed of as a boy (Super Constellation), and both getting informations from a New Zealand guy (it shall be a wonderful island – but do real people live there? He said: Yes!!).
  • etc.

You can even use it in models without radios - just use the standard FlightGear menu --> Equipment --> Radio Settings.

In the future FGCom surely will extend further and surely will get a “Speech to Text” capability in order to also integrate the Text-based automated ATC-routines inside FlightGear.

Status

  • March, 2009:

Adding User-Informations for installing, using, maintaining FGCOM on different platforms.

  • 18 November, 2008:

Latest SVN (rev 163) has the compile problems fixed. Also we have a new server: fgcom.flightgear.org.uk. User accounts not required (ie. do not use -U or -P)

  • 31 October, 2008:

The latest SVN release at this time is the r149 which does not compile due to a constant that is not defined (STL_STRING). Such constant appears at line 57 in the file src/fgcom_init.cpp which is: #include STL_STRING

I guess that such constant must point to the STL library include file but I am not sure. I revert to the r148 SVN version which successfully compiles.

Command to get such version is: svn co -r148 svn://svn.dfn.de:/fgcom/trunk fgcom-r148

  • 19 June, 2008: Currently the server is down due to hardware problems. It is unknown when the service comes back because he currently has no time to fix the problems.
  • 22 November 2007: Due to heavy development at this time there may be some differences between the information on the web pages and the installation. Please follow the discussions on the FlightGear development list!

The Client installation

Installing FGCom

Hardware Requirements

If you are satisfied with the operation and responsetimes of your current FGFS installation, then you should see no significant difference after adding the FGCom. If your FGFS installation runs already a little marginal, then you might experience some delays when many new airplane-models etc. must be loaded. This may happen when starting up at a busy airport. You can monitor/verify such a "short-time overload" in the FGstart command-window.

For details see the FGFS common hardware and driver requirements on http://www.flightgear.org/hardwarereq.html

Of course in addition you need a constant connection into the INTERNET, if you actually want to have a worldwide communication.

Prequisites/Companions

FGFS The basic Flight-Gear-Flight-Simulation installation. This must be installed prior to installing the FGCom (except if installing the Linux "CVS complete" version which can install FGCom and FGFS concurrently). ref.: http://www.flightgear.org/
FGrun This FlightGear Launch Control (also known as FG-Wizard), is a graphical front end to start the FGFS. This makes it very easy to startup the FGFS with all it's possible options. In some newer distributions this is already part of the basic FGFS installation package
Atlas Atlas displays the current position of your airplane on an landscape type of map together with navigational informations. It derives its data direct out of the installed FGFS databases. So you do not need any connections to the INTERNET.
MPMap MPMap is a pure browser application based on Google Maps, so it does not need any installation, except a Web-Browser. With MPMap you can watch all Multiuser-planes worldwide on a road-map, satellite picture or a composite of both. It includes most of the airports, navigational aids, and current weather informations. So it can be used for preflight planning, without having the FGFS started or even installed. But it needs a constant connection to the INTERNET - on the other hand you can do your preflight planning anywhere where there is a PC, connected to the INTERNET.
Multiplayer “Multiplayer” is not an installable program but an integrated function of the FGFS. As the name says, it enables communication of several players via a chat-function (keyboard) - or with this vocal interface ==> FGCom.
Festival Festival is a TTS (Text To Speech) system that can convert all in the FGFS displayed written text (ATC, Chat, etc.) into speech and put it on your loudspeakers. ref.: http://www.flightgear.org/Docs/getstart/getstartch5.html#x10-790005.6
Runwayfinder This standalone Browser-Application( http://www.runwayfinder.com ) does present a fantastic Fight-Planning tool, showing similar aspects like the "MPMap" but adds an Aeronatical map. It does not link to FGFS or MPMap or Multiplayer -- and covers only the domestic USA.

--Jomo 12:06, 11 March 2009 (EDT)

Install on Linux

For Linux-Systems there are 3 ways to install:

1) Downloading from the “Distributor” (Debian, Ubuntu, Red Hat, Suse, etc.).

  • Advantage: This is the easiest way and ensures that maintenance and services for this package and all concurrencies to it are provided automatically for a reasonable time-frame.
  • Disadvantage: The availability of those packages is usually very late and most Distributors do not cover all FGFS-features. To our knowledge none of the Distributors has an FGCom package available as of March 2009.
  • Installation: Follow the usual procedures of your distributer on how to install additional packages.

2) Installing a “CVS complete”

  • Advantage: It is the very easiest form of installation and installs in one step all prerequisite/companion modules (FGFS, FGrun, FGcom, PLIB, OSG, Simgear, AT). Also it can be added and removed from the system without disturbing the rest of the system (Libraries, Menus, Structures, etc.). It was tested on several Ubuntu and Debian systems.
  • Disadvantage: No automated maintenance available. The handling is a little different from the standard Menu-driven practice.
  • Installation: http://wiki.flightgear.org/index.php/Scripted_Compilation_on_Linux_Debian/Ubuntu

3) Compiling it locally

  • Advantage: After a successful installation it is integrated into the system like a package from the distributor.
  • Disadvantage: No automated maintenance available. Also the user should have some basic knowledge of his system and it's devices.
  • Installation:


Fetch FGCom (a copy of a working iaxclient is inside)

svn checkout svn://svn.dfn.de:/fgcom/trunk fgcom

Optional: edit iaxclient/lib/Makefile

To use OpenAl (Recommended and the default for now. Note however, that it requires OpenAl with capture support.)

USE_PA_OSS=0
USE_PA_ALSA=0
USE_PA_JACK=0
AUDIO_ALSA=0
AUDIO_OPENAL=1

To use oss emulation

USE_PA_OSS=1
USE_PA_ALSA=0
USE_PA_JACK=0
AUDIO_ALSA=0
AUDIO_OPENAL=0

To use native alsa (WARNING: PTT won't work)

USE_PA_OSS=0
USE_PA_ALSA=0
USE_PA_JACK=0
AUDIO_ALSA=1
AUDIO_OPENAL=0

To use portaudio alsa (WARNING: only if your card natively supports 8000Hz sample rate)

USE_PA_OSS=0
USE_PA_ALSA=1
USE_PA_JACK=0
AUDIO_ALSA=0
AUDIO_OPENAL=0

Edit fgcom/src/Makefile and check the pathes for PLIB_PREFIX and OPENAL_PREFIX.

Compile iaxclient and fgcom. To do so, do the following:

cd fgcom/src && make


Note: If you ran that Debian Script you likely need to edit the CXXFLAGS and LDFLAGS lines to, that want to have a dir-info. e.g.

CXXFLAGS ... -I [...]/OpenSceneGraph/include LDFLAGS -L [...]/OpenSceneGraph(/lib)

Install

make install

and you should be ready for a quick test...

Install on Windows

There is no download available directly from the FlightGear home-pages, so you need to search for one in the Internet. We found and tested that one: http://files.ww.com/files/50789.html

  • Download the binary file “fgcom-win32.zip” (or similar) and define as target your FGFS-directory.
  • Unzip the downloaded file – now you should have added “fgcom.exe” and “positions.txt” to your FGFS-directory
  • open a command window and type in:
c:\FGFS\fgcom.exe
      c:	stands for the drive/partion where your FGFS is installed
      FGFS	stands for the Directory where the FGFS is installed
  • if your system requests access via the firewall allow that


--Jomo 12:06, 11 March 2009 (EDT)

Install on Mac

You can download the "MAC OSX Binary" from the FGFS download-center ( http://www.flightgear.org/Downloads/binary.shtml#mac ). The latest version of the code does contain also the FGCOM.
--Jomo 13:13, 21 March 2009 (EDT)

Testing

If in the following some pictures seem to small to read on your screen, click on it and it will enlarge. Then return with the left arrow at the top of your screen.

Test the basic function

Prior to your first FGCom-tests you should verify your audio-system, because the FGCom-installation relies heavily on a good performance of it. If you had already used microphone-recordings or VoIP and thus “trust” your system, then you may pass this chapter and continue with the “-f910”-test. But be sure to return here just as soon as the audio system is not performing as you expected! (--> The "-f910"-Test)

For these basic tests you do not have to start the FGFS nor do you need to operate the PTT (PushToTalk) button.

Verifying your Audio-System

Keep the audio-tools easily accessible for adjustments. Please be aware that, due to the different Operating-Systems multiplied by the different Sound-Cards, there are thousands of different tools available for the following tasks. If you cannot recognize the tools by the sample-pictures, please see your system and/or sound-card documentation for the tools you can use for the following basic tasks:

  1. Make sure you have easy access to your audio-controls – and know them.
  2. From the devices available define the audio-devices you want to use. You may have an audio-module on your motherboard, and multiple sound-cards, and headsets, and Dolby-surround, etc. etc. We strongly recommend to use a headset (at least not to use loudspeakers) in order to reduce the very possible problem of feedback noise. A further reduction in noise can be achieved by using USB-headsets.
  3. Adjust your master volume-control and possible sub-controls to please your ears. Check your volume-control-panel for all controls that may influence your sound output. At least there is one master-control affecting all outputs. In addition there may be several outputs with individual adjustments. You may switch all regulators and switches off – and then switch them on one by one to find out which ones you need. You may also look into all tabs of your volume-control-panel, to see if there are features which may not have been used yet (if e.g. you never yet used a microphone, or VoIP, etc.)
  4. Adjust the Microphone and “Boost” devices. All modern Operating-Systems do have an integrated audio-recorder for such adjustments – you should be able to make an acceptable speech-recording. Most microphones do need a “boost” device-driver or extra amplifier. It is nice that all systems do provide this capability, but you have to activate it manually (if needed)! Also be aware that some of the devices may be switched off automatically if the system gets rebooted or an application gets closed.
  5. Finally find the “best fit” between your hardware, the network, and the FGCom-server response.

See the following examples:

1) Easy access to your audio-controls: You may need those controls often, so they should be placed easily accessible. Check if you have the Audio-Icon in your Task-bar: e.g.

Audio-Icon

If there is no such Icon anywhere on the screen do:

typical for Linux typical for Windows typical for MAC

To my knowledge the icon is shown on all graphical systems of all Linux-Distributions. Thus there is no action required.
Click on Start → Control Panel → Sounds and Audio:
Enabel Audio-Icon


2) Define the audio-devices to use:

Enter command: gnome-sound-properties
test devices

For each task you can open a selection-menu (on the right the downward arrow) in order to select the wanted device. I suggest to set all the same:

  • for a USB-headset you must select the USB-device
  • for all others you might first try “Autodetect”
Click right onto the audio-icon → Preferences → Audio-tab:
set devices

Select your Devices for Playback and Mic.

If you did change these device-settings, it is a good idea to reboot the system prior to continue.

3) Adjust volume-control (for theses first adjustments you should switch the Mic. off!)

Click right on Audio-Icon → Open Vol. Ctrl:
Volume Control

The amount of the slider-controls may vary depending on the capabilities of the sound-card or the usage of USB-headsets.

The “booster” is available under “Switches”.

Click right on the Audio-Icon → Volume-Ctrl. (or type command: sndvol32)
set devices

In this example the card overrides the std. Microsoft “Mic.” with “Rear Pink In” because all jacks can accept whatever you like!) - in this case it is the Mic. Be aware of such changes caused by usually “high expense” devices!

The “booster” is available under options.

Just click onto the green “Test” marks in the above device-selection and adjust the volume controls for a good sound. Click on tab. Sounds
Sound-test

Select one of the longer lasting signals (1), then click on 2 and adjust loudness with above slider-controls.


4) Adjust the Microphone:
Use the volume-control-panels to enable the microphone for this test. Then:

Open the recorder with the command: gnome-sound-recorder
Recording-test
  • Record
  • Stop
  • Play
Open the Recorder with command: sndrec32
Recording-test
  • Start recording (click red point)
  • talk some words into the mic
  • stop (rectangel)
  • spool back ( < < )
  • listen (>)

Try to find the lowest possible microphone-volume for a reasonable speech-replay, without adjusting the loudness-volume from the above set values. If needed add the “booster” or “gain”. But it would be better if you do not need/use the booster, because that will always try to adjust to a recordable volume – even if there are only some background-noises which nobody really wants to hear.

5) Find the “best fit”

Now perform the following “-f910” test and make final adjustments if needed:

--Jomo 08:28, 18 March 2009 (EDT)

The "-f910"-Test

Prior to executing the following command change into the directory, into which the FGCom was installed. This path will then shown up before the "$" sign. In case of a "cvs" installation you have to replace "fgcom" with "sh ./run_fgcom.sh". Then type:

   $ fgcom -Sfgcom.flightgear.org.uk -f910      


That will give the following output:

   fgcom - a communication radio based on VoIP with IAX/Asterisk
   (c)2007 by H. Wirtz <wirtz@dfn.de>
   Version 1.2.2 build 163M
   Using iaxclient library Version SVN 163M
   
   Successfully parsed commandline options.
   Reading list of airports...done.
   Initializing IAX client as guest:xxxxxxxxxxx@fgcom.flightgear.org.uk
   Call 0 accepted
   Call 0 answered

speak into the mic and your words will be echoed back with a short delay.
Then type ctrl-C to exit this Quick-Test


In case of trouble check the following:

  • "parsed command-line options" not successful: Check for wrong commands and/or missing “-” signs in front of them. See FGcom Options.
  • "Reading list of airports .." not successful: Check your file “positions.txt” which should be in the same directory in which you installed the FGCom. This is a normal text-file in which you can add missing informations. (Replacing a complete "Windows" position.txt with a "Linux" one can lead to errors, although lines of both files may be exchanged/added).
  • "Initializing IAX client" not successful: Check if you defined the right server, it must be "-Sfgcom.flightgear.org.uk”. Watch it: The “S” must be capital in Linux, but small for Windows (“-sfgcom.flightgear.org.uk”)!
  • No response "Call 0 accepted": Check your network, especially your firewall for open ports.
  • If you did not hear the "delayed response" echoed back, check the Chapter Solving Audio-Problems.

--Jomo 01:01, 7 March 2009 (EST)

Functional Test + User Briefing

Experiences pointed out, that the cooperation FGCom/FGFS works more reliable, if the FGFS gets started first. So we will start with setting up a flight-test-environment:

Start the FGFS

We suggest to use the FGrun (FlightGear Launch Control) to define required and/or proposed settings, in order to avoid typo-errors etc. If you keep the “Show command line” active (compare item 3 following), you also get the correct writing for all the command-options (in case you later want to start from a command-line and/or out of a script). In the following we will just point out those commands which are significant for the FGCom-operation:

If you don't have an Icon available to start the FGrun, then

  • use a command-window
  • change into the directory in which FGFS was installed
  • and start the program from there:
for linux CVS e.g.: cd ~/fgfs
sh ./run_fgrun.sh
for Std. Linux e.g.: fgrun
for Windows e.g.: D:
cd \flightgear
fgrun
for Mac:

Wait for the Program-Window to start and then define:

1) Start by choosing an airplane. For this first try we suggest the c172p, so we have a common understanding in the following. Also be aware of some airplane-designers reassigning keyboard-keys (e.g. the “space-bar”), thus you may not have the PTT-key (“Push To Talk”) available. See Tips and Tricks)
→ Click “Next”

2) As starting place please define the airport KPAO (Palo Alto) runway 13, so we all see the same messages in the following reports. A second reason for KPAO is of course that KPAO comes already with the basic scenery-package, and thus is available for everybody.
→ Click “Next”

3) Define the Multiplayer options: (see wiki Howto: Multiplayer for details)

Basic + Multiplayer Options
“AI models” must be activated in order to see all traffic



“Multiplayer” must be activated

type “mpserverXX.flightgear.org” into the field “Hostname:”, replace “XX” with the server number nearest you. Actually it does not matter which server you take (as long as it is online) - you might try which server gives you the best response-times.

Insert your “Callsign:” (max. 7 characters)

define the “in” and “out” ports both with the standard “5000”

With "Load/Save as" you may build up yourself library of settings for different airports.

→ Click “Advanced”

4) In the “Advanced Options” check the following sections (click/select them in the left column):

  1. General: Those settings were defined before. Check “Control”, if needed select your input device (Joystick, Keyboard, or Mouse).
  2. Features: “AI Traffic” should be activated already
  3. Initial Position:
Advanced: Initial Position

You may define here an unique “starting/parking” position outside a runway. Thus you could avoid starting on top of another player, because most of them pile up at the end of a runway. You can look up a position in the MPMap: (see next item)


Be aware that any data defined here override already predefined data (e.g. also an airport and runway). So do not forget to change/delete the here defined positions if some time you want to start from another airport. Of course you may save/reload settings for different airports, see "Load/save as" on the main window.

Open http://mpmap01.flightgear.org

Preflight
  • if the control-panel is not visible click onto "FGMap | mpserver01:5000 | pilots: 7”
  • click on “nav”
  • disable all options except “apt code”
  • type “KPAO” into the filed “Navaids lookup”
  • hit ENTER or click onto the reading-glass symbol
  • click onto the appearing line “Airport KPAO Palo Alto Arpt Of Santa Clara Co”
  • now you could/should support your preflight planning by clicking onto the wedge in the upper right corner after the airport name and then analyze all data given under “info”, “atc”, metar”, and “links”
  • then zoom into the airport
  • set the mouse over the wanted “Parking lot” and read that position in the upper right corner of the screen
  • type those long/lat values into the field below and also the wanted heading of the plane while parking

5) Network:

Preflight
Those data you have already predefined on the Base-Page. But in case you have network-problems (may be due to many PC's on a home-network with even more LAN-cards) you may specify here your actual IP-Adress.



WARNING: When saving these settings and reloading them again, FGrun might replace the given IP-Nr. by the PC-name. As of March 2009 you then have to replace that again with the IP-Nr. So use it only if you have to - first try it by adding nothing between the ",,". Keep it as "in,10,,5000".

If you need to define the unique IP-Address, open an command-window and type

OS to type Cap. returned values
for linux: ifconfig eth0

Link encap:Ethernet HWaddr 00:1d:92:80:a6:ab
inet addr:192.168.178.23 Bcast:192.168.178.255 Mask:255.255.255.0

for Windows: ipconfig /all et

Physikalische Adresse . . . . . . : 00-16-E6-40-AB-BF
DHCP aktiviert. . . . . . . . . . : Ja
Autokonfiguration aktiviert . . . : Ja
IP-Adresse. . . . . . . . . . . . : 192.168.178.20
Subnetzmaske. . . . . . . . . . . : 255.255.255.0
IP-Adresse. . . . . . . . . . . . : fe80::216:e6ff:fe40:abbf%4

for Mac:

The 192.168.178.23 (or 20) is the number you would have to input between the two commas. Be very careful and double-check that you do not mistype “.” and “,”!!

6) Input/Output:

Preflight
You do need a "generic" line as shown, because this defines the interface between FGFS and FGCom.




To input a new line: Start by selecting “generic” in the field “Protocol”. Then hit “New” and define the rest as shown.

Editing an existing line: Start by clicking onto the existing one, then change as required.

Deleting an existing Line: Click onto the line to be deleted, then hit "Delete"

7) Avionics: let's define:

Nav1: 114.10 San Jose VOR
Nav2: 115.80 SF VOR
ADF: 379 Brijj, beacon at SF

and activate: DME to Nav1

There is no field to input COM-radios, but remember them for setting them later manually:

Com1 118.60 Paolo Alto
Com2 120.50 San Francisco

8) Properties: Here you can define any presetting for any values in the FGFS.
see e.g.: FGFS-menu-bar --> File --> “Browse Internal Properties”

Preflight

e.g. I personally do not want the plane to start rolling without me telling it to. So I set the parking break as default at startup.

Input a new line: Just hit “New” and type your string.

Edit a line: Be sure first to click onto an existing item and then edit this “Property”

Delete a line: Click onto the line to be deleted then hit "Delete"

Hit “OK” → “Run” and watch the FGFS starting. If screen-place allows you may want to pull the shown "FGFS Report-Window" to the side and watch how busy your PC is while loading the other multi-player models.
--Jomo 13:55, 12 March 2009 (EDT)

Start the FGCom

Open a command-window and change into the directory in which FGCom was installed (probably the same as the FGFS) and start the FGCom. Do not use any other options than the server address “-sfgcom.flightgear.org.uk”:

for linux CVS e.g.: cd ~/fgfs
sh ./run_fgcom.sh
for this “CVS complete” you do not need to specify the server address, because it is embedded in the script-file.
for Std. Linux e.g.: fgcom -Sfgcom.flightgear.org.uk "-Sfgcom..." with capital "S"
for Windows e.g.: D:
cd \flightgear
fgcom -sfgcom.flightgear.org.uk
"-sfgcom..." with small "s"
for Mac:

The response should be:

  /fgcom - a communication radio based on VoIP with IAX/Asterisk 
  (c)2007 by H. Wirtz <wirtz@dfn.de> 
  Version 1.2.2 build 206M 
  Using iaxclient library Version SVN 206M 
  
  Successfully parsed command-line options. 
  Reading list of airports...done. 
  Initializing IAX client as guest:xxxxxxxxxxx@fgcom.flightgear.org.uk

If your printout up to that line is different go back to chapter Test the basic function

For this test position this command-window somewhere, where you can monitor it throughout the test.

1) If COM1 was set to 119.650 you will see the following 2 lines added to the initialization of the FGCom-window:
Selected frequency: 119.650 
Call rejected by remote

Instead of “119.650” there will be shown the last used frequency. In this case the source of the nearest ATC-Freq. 119.650 is more than 50km away from your actual position of the airplane, so FGCom rejects a connection to it. If the last frequency used would have been within 50 km you get an indication very similar to the next item.

2) Switch COM1 to the for this airport needed 118.60:
Selected frequency: 118.600 
Hanging up call 0 
Airport Palo Alto (KPAO Tower at 118.600 MHz) is in range ( 0.6 km) 
Call 0 accepted 
Call 0 answered 
Airport Palo Alto (KPAO Tower at 118.600 MHz) is in range ( 0.6 km) 
This last line will be repeated according the to time span you defined in the “Input/Output” command “--generic=socket,in,10,,5500,tcp”, you may change that value later according to your preferences.

3) Press your PTT (PushToTalk on space-bar and joystick, as available):
[SPEAK] unmute mic, mute speaker 
[LISTEN] mute mic, unmute speaker 
[SPEAK] unmute mic, mute speaker 
[LISTEN] mute mic, unmute speaker 
Only in between “SPEAK” and “LISTEN” you are able to talk to others.

Now lets set the other Radios:
  • COM2 = 120.50 San Francisco
  • NAV1 = 114.10 San Jose
  • NAV2 = 115.80 San Francisco

4) Pressing Upper+Space will now switch to the next radio: NAV1

Radio-Select: NAV1 
Selected frequency: 114.100 
Hanging up call 0 
Call rejected by remote 
[LISTEN] mute mic, unmute speaker 
Compare this to the NAV2 indication 2 steps later: something is wrong – and it wasn't your fault: Although this NAV is valid (see ...FGFS/data/Airports/apt.dat.gz), it is missing in the FGCom listing .../FGCom/positions.txt. I encountered this problem several times, as well for Airports as also for VOR's. If this happens with your most beloved airport you can add those missing data with a text-editor. But before changing be sure to save the original data somewhere - just in case!

5) Pressing Upper+Space once more switches to COM2
Radio-Select: COM2 
Selected frequency: 120.500 
Airport San Francisco Intl (KSFO TWR at 120.500 MHz) is in range (29.1 km) 
[LISTEN] mute mic, unmute speaker 
Call 0 accepted 
Call 0 answered
That looks OK: San Francisco is about 29 km away

watch the “km” instead of miles!
10 km = 6.2137 mi

6) Pressing Upper+Space once more switches to NAV2
Radio-Select: NAV2 
Selected frequency: 115.800 
Hanging up call 0 
Airport SAN FRANCISCO VOR-DME (SFO VOR at 115.800 MHz) is in range (28.5 km) 
Call 0 accepted 
Call 0 answered 
[LISTEN] mute mic, unmute speaker 
And Yes: The SF VOR is just a little closer than the airport(center)

7) Pressing Upper+Space once more brings back COM1:
Radio-Select: COM1 
Selected frequency: 118.600 
Hanging up call 0 
Airport Palo Alto (KPAO Tower at 118.600 MHz) is in range ( 0.6 km) 
Call 0 accepted 
Call 0 answered 
[LISTEN] mute mic, unmute speaker 

8) Lets us start and continue flying in the direction about 130°:
Airport Palo Alto (KPAO Tower at 118.600 MHz) is in range ( 0.4 km) 
Airport Palo Alto (KPAO Tower at 118.600 MHz) is in range ( 0.2 km) 
Airport Palo Alto (KPAO Tower at 118.600 MHz) is in range ( 0.7 km) 
Airport Palo Alto (KPAO Tower at 118.600 MHz) is in range ( 1.3 km) 
Airport Palo Alto (KPAO Tower at 118.600 MHz) is in range ( 1.9 km) 
Airport Palo Alto (KPAO Tower at 118.600 MHz) is in range ( 2.4 km) 
notice that you first come closer (to the center of the airport) and after that getting away

9) Let's switch to COM2 (San Francisco) and watch:
Radio-Select: COM2 
Selected frequency: 120.500 
Airport San Francisco Intl (KSFO TWR at 120.500 MHz) is in range (37.8 km) 
Call 0 accepted 
Call 0 answered 
[LISTEN] mute mic, unmute speaker 
Airport San Francisco Intl (KSFO TWR at 120.500 MHz) is in range (38.6 km) 
Airport San Francisco Intl (KSFO TWR at 120.500 MHz) is in range (39.5 km) 
.. 
Airport San Francisco Intl (KSFO TWR at 120.500 MHz) is in range (49.7 km) 
Hanging up call 0 
Radio-Select: NAV2 
Selected frequency: 115.800 
Call rejected by remote 
[LISTEN] mute mic, unmute speaker 
That means: at about 50KM we are getting out of ranStart the FGFS:
ge and thus the on COM2 active SF getts terminated. Notice that also the inactive NAV2 gets terminated, because it exceeded the allowable range at about the same time!

10) You could turn now and watch the opposite: At about the same distance those two will become active again (automatically, if you did not change the settings).

If you got here without any (technical) problems your FGCom is fully functional. All you have to do now, is trying to test the audio.

Final Audio Test

There is no formal Test-Environment for that. Just cruise within the San Francisco (or any other) area and listen and/or try calling from time to time: “This is YourCallSign, is somebody listing” or similar. If you hear somebody talking (and it is not the AI-ATC chatter!) but you get no answers, see the chapter "Solving Audio-Problems".

Also there are many "Multiplayer Events" which use the FGCom possibilities, but also use the text-based FGFS-Menu "Network --> Chat" to enable communication outside the FGCom. See the Flightgear-Forum [[ http://www.flightgear.org/forums/]] and there the "Multiplayer Events".
--Jomo 04:20, 18 March 2009 (EDT)

Solving Audio-Problems

Before you start, make sure that your headset is (or speakers and microphone are) working and tested to sensible volumes. Headsets are strongly recommended in order to avoid feedback resonances, which could affect not only you but all fellow listeners with awful or even painful noises. You may test your Audio-Devices using the basically installed Utilities of your operating system. e.g.: type into a command line for:

  1. Linux: "gnome-sound-recorder", (you may also check on: Linux software audio mixing with FlightGear)
  2. Windows: "audiorecorder"
  3. Mac: ???

more Tests / TestSetups etc. ToBeDefined

Using FGCom

ToBeDefined

Tips and Tricks

Copying-Printing this WIKI-Page
If you absolutely want to have a local copy of this on your PC or need a hard-copy, then:

  • goto this page: ( http://wiki.flightgear.org/index.php/FGCOM )
  • to copy:
    • select in the Browser-Menu: "File" --> "Save Page as.. "
  • to print:
    • select the last entry in the sidebar on the left: "Printable version"
    • Then I suggest: Menu --> File --> "Page Setup": Set to "Landscape" --> "Apply"
    • before printing I recommend: Menu --> File --> "Print Preview" and you see those now many many pages!
    • If you really want to wast that paper: Menu --> "File" --> "Print" and it will print on your favorite printer

Remember the policies: Private use only !

Editing
If you edit Textfiles (e.g. Radio-listings) or xml-files you might not see line-endings when using your standard editor.

  • For windows you can use "WordPad"
  • For Linux the "gedit" works fine

Ports needed
In case of problems over the INTERENT you might check that the the following ports are allowed:

1314	TCP	if the Festival-Server is used for Text/Sound 
2005	UDP	Vcp-Stream
4569	UDP	FGCom  VoIP, (Inter-Asterisk eXchange)
5000	UDP	in/out Multiplayer    (VPN Sftw.)
5001	UDP	Enable HTTP-server
5002	UDP	Enable property server
5003	UDP	Enable Screen-Shot services
5004   UDP     (may be used as a spare)
5505	UDP	Terra Sync
16661	UDP	FGCom listening to FGFS, usually “local host” only

Also consider that some modern modems do already provide a firewall. If in addition to that you use a local firewall in your PC, than you might expect an unhealthy competition between those two concurrent firewalls. In case of problems you should deactivate one of those (usually the one inside the PC, especially if several PCs are connected via that modem).

PTT Problems (Push To Talk)

  • if the FGCom Command-window initiates, but does not respond to any COMM or PTT activity:
    • Try to enforce (the usually predefined) port as option. i.e. add “-p16661” to the FGCom Start-Command
    • check the FGrun extended Options → Input/output “generic=socket..”: The port there must be the same as for the FGCom, i.e. 16661 (if it was not intentionally changed by you)
    • You may try to change the port to e.g. UPD 5004. In this case you have to change at 2 places:
      • add the option “-p5004” to the FGCom start-command
      • also change the value in the FGrun (“Wizard”) → Advanced Options → Input/output to 5004.
      • and you may have to tell your Firewall to allow port UPD 5004

  • if in the FGCom Command-Window the Airport indication is ok,
    • but when hitting the PTT it does not appear:
      • [LISTEN] mute mic, unmute speaker
      • [SPEAK] unmute mic, mute speaker</nowiki>
    • Be sure the FGFS window is the active window. Move the Mouse-Pointer into the FlightGear-Window and click once, then try again (while the Mouse-Pointer remains in that window! Some systems do change the “active Window” according to where the mouse is!)
    • Check the “YourPlane-set.xml” file in your FGFS/data/Aircraft/YourPlane directory: If you find a line “<key n="32">” then this plane is intentionally using “key 32” (Space) for something other than the PTT. Known planes that do that as of Feb. 2009 are: an2, bluebird-base, ogel, OV10.., seafireIIc, spitfireIIa, ufo.


Timezones
When communicating it may be wise to always use the internationally accepted GMT (GreenwichMeanTime). On http://www.timezoneconverter.com/cgi-bin/tzc.tzc everybody can check what GMT means to him/her and thus knows what time you mean.

Supplemantery Informations

Commandline Parameters

Or if it didn't work perfectly first time

   fgcom --help

returns the following useful info

   fgcom - a communication radio based on VoIP with IAX/Asterisk
   (c)2007 by H. Wirtz <wirtz@dfn.de>
   Version 1.2.2 build 163M
   Using iaxclient library Version SVN 163M
 OPTION                                        DESCRIPTION
 -d, -debug, --debug=                          show debugging information
 -S, -voipserver, --voipserver=                voip server to connect to (default: 'fgcom1.parasitstudio.de')
 -s, -fgserver, --fgserver=                    fg to connect to  (default: 'localhost')
 -p, -port, --port=                            where we should listen to FG (default: '16661')
 -a, -airport, --airport=                      airport-id (ICAO) for ATC-mode
 -f, -frequency, --frequency=                  frequency for ATC-mode
 -U, -user, --user=                            username for VoIP account (default: 'guest')
 -P, -password, --password=                    password for VoIP account (default: 'guest')
 -i, -mic, --mic=                              mic input level (0.0 - 1.0)
 -o, -speaker, --speaker=                      speaker output level (0.0 - 1.0)
 -b, -mic-boost, --mic-boost=                  enable mic boost
 -l, -list-audio, --list-audio=                list audio devices
 -r, -set-audio-in, --set-audio-in=            use <devicename> as audio input
 -k, -set-audio-out, --set-audio-out=          use <devicename> as audio output
 -c, -codec, --codec=                          use codec <codec> as transfer codec (default: 'u')
 Available codecs:
       u - ulaw (default and best codec because the mixing is based onto ulaw)
       a - alaw
       g - gsm
       s - speex
       7 - G.723
 Mode 1: client for COM1 of flightgear:
       $ fgcom
 - connects fgcom to fgfs at localhost:16661
       $ fgcom -sother.host.tld -p23456
 - connects fgcom to fgfs at other.host.tld:23456
 Mode 2: client for an ATC at <airport> on <frequency>:
       $ fgcom -aKSFO -f120.500
 - sets up fgcom for an ATC radio at KSFO 120.500 MHz
   Note that /home/hcs/src/fgcom/trunk/src/fgcom starts with a guest account unless you use -U and -P!

Also note that the current server (fgcom.flightgear.co.uk) works with guest account, so do not use -U or -P

Server installation

For running a FGCOM server you need Asterisk and depending on the amount of users much bandwith and CPU power. Because of putting pilots and ATCs in a VoIP conference the server-admin has to assure that there is enough network and cpu power to avoid drop-outs of the voice stream.

Prerequirements

Install Asterisk on top of your favorite distribution. Please refer to installation manuals (e.g. [[1]]) you can find on the net. You do not need H.323 or SIP because the fgcom client uses IAX2 as VoIP signaling protocol. Only if you think about connecting external VoIP applications to FGCOM you should consider to activate H.323 or SIP (but this is not the scope of this small howto).

Notice: You need to install the zaptel driver modules - even if you won't use any hardware for telecom interfacing. You need the ztdummy kernel module for the asterisk conference application MeetMe() because it simulates a hardware clock needed by this application. Further development of FGCOM might use app_conference which don't needs any timing device.

For now we want to use /etc/asterisk as the base configuration directory.

Setting up the radio frequencies

The radio frequencies are "simple" Conferences and realized due to the Asterisk application MeetMe().

Part 1: General configuration

First you have to set up the general configuration of the system. Put the following at the top of your "extensions.conf" file:

 [general]
 static=yes
 writeprotect=yes
 ;
 [globals]
 ;
 [macro-com]
 exten => s,1,Answer()
 exten => s,n,MeetMe(${MACRO_EXTEN},qd)
 exten => s,n,Hangup()
 ;
 [macro-echo]
 exten => s,1,Answer()
 exten => s,n,Echo()
 exten => s,n,Hangup()
 ;
 [guest]
 ; ATC-Help
 exten => 01-ZZZZ-911.000,1,Macro(com)
 exten => 012525252591100,1,Dial(Local/01-ZZZZ-911.000)
 exten => 01-ZZZZ-910.000,1,Macro(echo)
 exten => 012525252591000,1,Dial(Local/01-ZZZZ-910.000)
 ;
 [default]
 include => guest
 ;
 ; Code:
 ; 01 - FlightGear
 ; 02 - Microsoft Flight-Simulator
 ; 03 - ...
 ;
 ; Air2Air
 exten => 01-ZZZZ-123.450,1,Macro(com)
 exten => 012525252512345,1,Dial(Local/01-ZZZZ-123.450)
 exten => 01-ZZZZ-122.750,1,Macro(com)
 exten => 012525252512275,1,Dial(Local/01-ZZZZ-122.750)

Part 2: Adding your favorite (all?) frequencies

For this you have simply to create an extension for every touple of airport/frequency in extensions.conf. The following is an example for Berlin-Tempelhof (EDDI). The information comes from the file "apt.dat.gz" of your FlightGear installation.

 ; EDDI ATIS 126.020 - Berlin Tempelhof
 exten => 01-EDDI-126.020,1,Macro(com)
 exten => 010403030812602,1,Dial(Local/01-EDDI-126.020)
 ;
 ; EDDI BERLIN DEP 120.620 - Berlin Tempelhof
 exten => 01-EDDI-120.620,1,Macro(com)
 exten => 010403030812062,1,Dial(Local/01-EDDI-120.620)
 ;
 ; EDDI BERLIN DIRECTOR 121.120 - Berlin Tempelhof
 exten => 01-EDDI-121.120,1,Macro(com)
 exten => 010403030812112,1,Dial(Local/01-EDDI-121.120)
 ;
 ; EDDI BERLIN ARR 126.420 - Berlin Tempelhof
 exten => 01-EDDI-126.420,1,Macro(com)
 exten => 010403030812642,1,Dial(Local/01-EDDI-126.420)
 ;
 ; EDDI GND 121.950 - Berlin Tempelhof
 exten => 01-EDDI-121.950,1,Macro(com)
 exten => 010403030812195,1,Dial(Local/01-EDDI-121.950)
 ;
 ; EDDI TWR 119.570 - Berlin Tempelhof
 exten => 01-EDDI-119.570,1,Macro(com)
 exten => 010403030811957,1,Dial(Local/01-EDDI-119.570)
 ;
 ; EDDI BERLIN DIRECTOR 136.100 - Berlin Tempelhof
 exten => 01-EDDI-136.100,1,Macro(com)
 exten => 010403030813610,1,Dial(Local/01-EDDI-136.100)
 ;
 ; EDDI TWR 118.100 - Berlin Tempelhof
 exten => 01-EDDI-118.100,1,Macro(com)
 exten => 010403030811810,1,Dial(Local/01-EDDI-118.100)
 ;
 ; EDDI BERLIN DEP 119.500 - Berlin Tempelhof
 exten => 01-EDDI-119.500,1,Macro(com)
 exten => 010403030811950,1,Dial(Local/01-EDDI-119.500)
 ;
 ; EDDI BERLIN ARR 119.620 - Berlin Tempelhof
 exten => 01-EDDI-119.620,1,Macro(com)
 exten => 010403030811962,1,Dial(Local/01-EDDI-119.620)

What does the above mean? There are two lines (three with the comment) for each frequency: The first one sets up an extension named "01-EDDI-119.500". Yes, for VoIP you can use textual extensions but be careful if you want to setup your Asterisk-Server with POTS (=Plain old telephone service). Therefor you need the second line which is the same as above but without dashes and the letters in the decimal representation of the ASCII Code. The second line does only a "rewrite" of the numerical representation to the textual one.

For setting up all airports you can write your own simple script. But this maybe also not needed in further versions of FGCOM.

After editing the extensions.conf file you have to reload the extensions file (e.g. "asterisk -rx extensions reload").

You can add further nice goodies to your extensions.conf: MorseCode() for morsing the code of the VOR (MorseCode() will only work in Asterisk >= 1.4), Recording of metar data and playing this recording back when using the frequency of the metar information, ...

Setting up user accounts

The user accounts are located in the file iax.conf (and perhaps also in sip.conf, but this is not necessary). The top of the file should look like this:

 [general]
 bandwith=low
 disallow=lpc10
 jitterbuffer=yes
 forcejitterbuffer=no
 tos=lowdelay
 autokill=yes
 disallow=all
 allow=alaw
 allow=gsm
 allow=ilbc
 allow=g726
 allow=ulaw
 language=en
 maxauthreq=10
 context=guest
 ;
 [guest]
 type=user
 username=guest
 context=guest
 qualify=yes
 callerid=Guest IAX User
 host=dynamic
 ;

You may want to disallow more codecs or want to allow additional codecs (such as speex). But have in mind that the internal mixing of the conferences are done in "ulaw". But "ulaw" needs about 80 kBit/s because it does no compression. So you have to think about what's better for you: less bandwidth (per user) and more CPU usage or more bandwidth (per user) and less CPU usage... you should also consider the "sound" of some codecs may not have the 'real radio sound'.

For each user you have to add a bunch of lines to your iax.conf file:

 [<USERNAME>]
 type=user
 username=<USERNAME>
 secret=<PASSWORD>
 context=default
 host=dynamic
 nat=yes
 notransfer=yes

You just have to fill in the <USERNAME> and <PASSWORD>. After each change you have to reload the configuration (e.g. "asterisk -rx reload chan_iax2.so"). Perhaps you want to write scripts for automatic configuration and so on. But be warned: Further versions of fgcom may use the multiplayer servers for getting usernames and position data and you have to change your scripts.

Problems?

If you have problems you can contact me via email at "dcoredump AT gmail.com".

External links

Development

TODO

See also