[Freeswitch-users] zrtp endpoints have different sas through fs 1.0.4

Harondel J. Sibble help at pdscc.com
Mon Dec 14 18:01:29 PST 2009

Hmm, I emailed the zfoneproject folks about an hour ago asking about a 
release date for zfone3 and was surprised about a half hour later with a call 
from PRZ himself.

Here's what I got from the call

1) the currently released version of zfone already has support for secure pbx 

2) the tivi softphone client which I am using on windows mobile and symbian 
smartphones does not yet have secure pbx enrollment support

I contacted Tivi support and the 2.0.7 client with support for secure pbx 
enrollment is due out close to the end of the year, depending on various 
factors yada, yada, yada.

Am I correct in assuming that connecting via a softphone (eikga) on a windows 
machine also running the latest official zfone client, and calling 9787 
should give me more than just a message saying the following?

1) call is secure 
2) welcome to the zrtp enrollment agent
3) thank you for calling (about 1-2 seconds after item 2)

then I get a few beeps, I see the zhone client saying security is interrupted 
and the call drops.

This is the same class of behaviour I get with the Tivi clients.

On 23 Aug 2009 at 17:09, Brian West wrote:

> This is because you didn't install the zrtpagent.lua script and dial  
> zrtp on your keypad to enroll the FS box as a trusted man in the  
> middle... which btw will only work with the unreleased zfone3.
> /b
> On Aug 23, 2009, at 4:37 PM, Harondel J. Sibble wrote:
> > I've got 1.0.4 running with zrtp on ubuntu 9.0.4. I have 3 zrtp  
> > capable
> > endpoints: an xp desktop running ekiga with the 0.92 build 218 zfone  
> > client,
> > 2 cell phones running ver 2.0.5 of the Tivi softphone: a nokia e61i  
> > (symbian
> > s60) and an O2 Xda Flame (windows mobile 5).
> >
> > All 3 endpoints are registered with FS using the default extensions  
> > of 1000-
> > 1003
> >
> > With global_setvar zrtp_secure_media=true the zrtp negotiation  
> > between end
> > points happens but the SAS never matches,below is console output for  
> > a call
> > between 2 of the endpoints
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Harondel J. Sibble 
Sibble Computer Consulting
Creating Solutions for the small and medium business computer user.
help at pdscc.com (use pgp keyid 0x3AD5C11D) http://www.pdscc.com
(604) 739-3709 (voice)

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