Firefly Softphone

Firefly is Freshtel's IAX-based softphone for Windows, which works with Freshtel's VoIP service. It is based on Virbiage Phones's Cubix softphone platform. Firefly is available from the Freshtel website,

Firefly is known to work under Wine on Linux, although changes to font settings and/or the installation of additional fonts may be required.

Firefly Features

  • VoIP Protocols: SIP, IAX
  • Codecs: ╬╝law, Alaw, iLBC, Speex, GSM, G.729 (via DLL)
  • Music on Hold
  • Skinnable Interface
  • Instant Messaging, Presence, and Contact Lists (IAX2 only, implemented via extensions to the IAX2 text message field)

Dialling methods

  • 123 - dials Freshtel virtual number *123
  • +123 - dials geographical number 123 (note: not necessarily a full E.164 number — the plus is just an escape character)

Third party version

Virbiage offer the Cubix softphone for theming and licensing by third parties. Firefly is an example of such a retargeted softphone, as is Tesco Internet Phone.

Commercial enquiries should be directed to Virbiage. If you need a version which works with 3rd party IAX & SIP networks, then use

Enabling G.729 support

Added by 'msg' on 05-22-2005
— building the g729.dll using open source tools --
— thanks to the developers for the opportunity to evaluate G.729 on firefly --

(We don't have MS VC (but we do have a working MS Win32 version of 'lib.exe')
The build host was Win2k Server sp3/Cygwin 1.3.22/gcc 3.2;

1. create a target directory for the build and create a subdirectory under it called 'ms-obj.dir'
2. download '' from;
download '' (be sure to not clobber the previous download) from
and unzip them into the target directory

      • build the library ***
— at a 'cmd.exe' shell:
3. cd to the target directory
4. lib /NOLOGO /LIST .\va_g729.lib > lib.lst
— at a 'bash' shell:
5. sed 's+\\+\\\\+g' < lib.lst > lib.list
6. cd ms-obj.dir
7. while read name
lib /NOLOGO /EXTRACT:$name ../va_g729.lib
done < ../lib.list
8. (convert all uc filenames to lc ; eg. use the following script:)
ls | while read fname
lowname=`echo $fname | tr "[A-Z]~np~" "~np~[a-z]"`
mv $fname $lowname
9. ar r ../libg729.a *

      • compile and link ***
10. cd ..
11. mv G729.C g729.c
12. gcc -mno-cygwin -shared -I ./ -c -o g729.o g729.c
13. gcc -mno-cygwin -shared -I ./ -L ./ -shared -o foo.dll g729.o -lg729
— (ignore the many messages: Warning: .drectve '%.*s' unrecognized)
— output filename cannot be 'g729.dll' or linking fails with message: './/g729.dll file not recognized: file truncated'
14. mv foo.dll g729.dll

The dll worked well when tested with the third-party firefly/SIP on a P166/64MB/Win2k laptop with USB headset; I am quite
impressed with the performance of firefly (especially on this older platform) as it eliminates unresolvable echo and
chopping problems we had with X-Ten lite. The G.729 codec is wonderful over dial-up.

You can download the dll from:

See also


See Also

VOIP Phones
Created by: jht2, Last modification: Tue 15 of May, 2012 (19:09 UTC) by admin
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