That makes it even easier in those countries... The whole point is anywhere along the line and then some on the PSTN there are multiple points in which a call can be compromised just as easy if not easier then cracking a network along the way. Any 10 year old with 5 minutes of instruction can build a pstn line tap and listen to phone calls... Its only a step up from that to tap fax line... That being said, just because its perceived by luddites to be more secure then say an email doesn¹t make it so... On 3/6/11 11:33 AM, "Madovsky" <infos@madovsky.org> wrote:
because crypto was and is not allowed in some countries also...
----- Original Message -----
From: Ken Rice <mailto:krice@freeswitch.org>
To: FreeSWITCH Users Help <mailto:freeswitch-users@lists.freeswitch.org>
Sent: Sunday, March 06, 2011 12:23 PM
Subject: Re: [Freeswitch-users] send fax via google voice.
Geography doesn¹t stop a determined attacker...
Just because its a little more difficult, that doesn¹t mean it is secure... If that were the case then Classified US Government Faxes wouldn¹t require crypto gear in line (see STU-III for an example of this that¹s over 20 years old)
K
On 3/6/11 11:08 AM, "Madovsky" <infos@madovsky.org> wrote:
I think it's more hard for a guy to hack your US pstn line if he lives in Australia... fax on internet can be hacked from everywhere...
----- Original Message -----
From: Ken Rice <mailto:krice@freeswitch.org>
To: FreeSWITCH Users Help <mailto:freeswitch-users@lists.freeswitch.org>
Sent: Sunday, March 06, 2011 11:55 AM
Subject: Re: [Freeswitch-users] send fax via google voice.
What security reasons? Its just as easy to tap a PSTN line as it is to sniff a network connection, the only difference is you might need a little bit different hardware...
If it were about security, fax machines would actually encrypt a fax but they don¹t...
On 3/6/11 1:55 AM, "envelopes envelopes" <sunwood360@gmail.com> wrote:
that is not true.
Real estator/law firm/accounting offices/travel agents...many of them still prefer fax for security reasons. I am always worried about sending my driver license pdf file via e-mail.
On Sat, Mar 5, 2011 at 11:34 PM, curriegrad2004 <curriegrad2004@gmail.com> wrote:
That's why PDF's/XPS/tiff's have replaced fax completely. Not many people out there still do have a fax machine :)
On Sat, Mar 5, 2011 at 10:56 PM, Ken Rice <krice@freeswitch.org> wrote: > > Ok > > > > will sending a fax over it work... The answer is yes it will work.. > > will it work reliably, no > > > > Faxing just needs to die already... > > The problem you have here with Faxing over G711 (PCMU or PCMA) is > that > > faxing uses a modem to encode a digital signal into an analog > carrier meant > > for a circuit switch voice network with a constant amount of delay > and > > guaranteed delivery of the entire analog stream > > > > VoIP by definition is Voice Over Internet Protocol... IP is a packet > > switched network, where you can no guarantee a constant amount delay > > (latency) ... Not to mention it is not common to see a udp packet or
2
> > missing along the way. > > > > Where as 1 20ms packet may not seem like much to you, that¹s > roughtly > > equivalent to 575bytes of data in the fax and it will screw up the > fax > > either causing a corruption of the data, or a drop in the analog > modem > > carrier which requires a retrain... > > > > > > > > > > On 3/5/11 11:35 PM, "envelopes envelopes" <sunwood360@gmail.com> > wrote: > > > > ok, > > > > Reliability is a different issue. I am just wondering whether > mod_dingaling > > supports fax via GV. because someone proved sending fax via GV from > fax > > machine did work > > .(http://www.magicjacksupport.com/faxing-via-google-voice-t7412.html). > > > > > > > > On Sat, Mar 5, 2011 at 9:18 PM, curriegrad2004 > <curriegrad2004@gmail.com> > > wrote: > > > > And relativity comes into play too. > > > > Also you do need to realize that the packets sent via UDP isn't > > guaranteed to be in order as the fax machine expects the data to be > > sent in order, not out of order. That's the beauty of packet > switched > > networks. > > > > On Sat, Mar 5, 2011 at 7:29 PM, Steve Underwood <steveu@coppice.org> > wrote: >> >> On 03/06/2011 11:21 AM, envelopes envelopes wrote: >>> >>> >>> >>> Why is PCMU codec not reliable? >>> >>> >>> >>> >> >> Unsynchronised clocks, and packet loss. >> >> >> >> Steve >> >> >> >> >> >> _______________________________________________ >> >> FreeSWITCH-users mailing list >> >> FreeSWITCH-users@lists.freeswitch.org >> >> http://lists.freeswitch.org/mailman/listinfo/freeswitch-users >> >> >> UNSUBSCRIBE:http://lists.freeswitch.org/mailman/options/freeswitch-users >> >> http://www.freeswitch.org >> >> > > > > _______________________________________________ > > FreeSWITCH-users mailing list > > FreeSWITCH-users@lists.freeswitch.org > > http://lists.freeswitch.org/mailman/listinfo/freeswitch-users > > > UNSUBSCRIBE:http://lists.freeswitch.org/mailman/options/freeswitch-users > > http://www.freeswitch.org > > > > > > ________________________________ > > _______________________________________________ > > FreeSWITCH-users mailing list > > FreeSWITCH-users@lists.freeswitch.org > > http://lists.freeswitch.org/mailman/listinfo/freeswitch-users > > > UNSUBSCRIBE:http://lists.freeswitch.org/mailman/options/freeswitch-users > > http://www.freeswitch.org > > > > _______________________________________________ > > FreeSWITCH-users mailing list > > FreeSWITCH-users@lists.freeswitch.org > > http://lists.freeswitch.org/mailman/listinfo/freeswitch-users > > > UNSUBSCRIBE:http://lists.freeswitch.org/mailman/options/freeswitch-users > > http://www.freeswitch.org > > > >
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