<html><head></head><body style="word-wrap: break-word; -webkit-nbsp-mode: space; -webkit-line-break: after-white-space; ">I do not think it makes any difference if it is secure or not. In a court in Germany, a fax is a document, an email is not, at least not yet. So contracts need to be faxed, not emailed.<div>We can discuss the security of fax as much as we want, as long as the regulations make fax a requirement, it will stay around.</div><div><br><div><div>Am 06.03.2011 um 18:44 schrieb Ken Rice:</div><br class="Apple-interchange-newline"><blockquote type="cite"><div>
<font face="Calibri, Verdana, Helvetica, Arial"><span style="font-size:11pt">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 doesn’t make it so... <br>
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<br>
On 3/6/11 11:33 AM, "Madovsky" <<a href="x-msg://11/infos@madovsky.org">infos@madovsky.org</a>> wrote:<br>
<br>
</span></font><blockquote type="cite"><font face="Calibri, Verdana, Helvetica, Arial"><span style="font-size:11pt">because crypto was and is not allowed in some countries also...<br>
</span></font><blockquote type="cite"><font face="Calibri, Verdana, Helvetica, Arial"><span style="font-size:11pt"> <br>
----- Original Message ----- <br>
<br>
<b>From:</b> Ken Rice <<a href="mailto:krice@freeswitch.org">mailto:krice@freeswitch.org</a>> <br>
<br>
<b>To:</b> FreeSWITCH Users Help <<a href="mailto:freeswitch-users@lists.freeswitch.org">mailto:freeswitch-users@lists.freeswitch.org</a>> <br>
<br>
<b>Sent:</b> Sunday, March 06, 2011 12:23 PM<br>
<br>
<b>Subject:</b> Re: [Freeswitch-users] send fax via google voice.<br>
<br>
<br>
Geography doesn’t stop a determined attacker... <br>
<br>
Just because its a little more difficult, that doesn’t mean it is secure... If that were the case then Classified US Government Faxes wouldn’t require crypto gear in line (see STU-III for an example of this that’s over 20 years old)<br>
<br>
K<br>
<br>
<br>
On 3/6/11 11:08 AM, "Madovsky" <<a href="x-msg://11/infos@madovsky.org">infos@madovsky.org</a>> wrote:<br>
<br>
<br>
</span></font><blockquote type="cite"><font face="Calibri, Verdana, Helvetica, Arial"><span style="font-size:11pt">I think it's more hard for a guy to hack your US pstn line if he lives<br>
in Australia... fax on internet can be hacked from everywhere...<br>
<br>
</span></font><blockquote type="cite"><font face="Calibri, Verdana, Helvetica, Arial"><span style="font-size:11pt"><br>
----- Original Message ----- <br>
<br>
<b>From:</b> Ken Rice <<a href="mailto:krice@freeswitch.org">mailto:krice@freeswitch.org</a>> <br>
<br>
<b>To:</b> FreeSWITCH Users Help <<a href="mailto:freeswitch-users@lists.freeswitch.org">mailto:freeswitch-users@lists.freeswitch.org</a>> <br>
<br>
<b>Sent:</b> Sunday, March 06, 2011 11:55 AM<br>
<br>
<b>Subject:</b> Re: [Freeswitch-users] send fax via google voice.<br>
<br>
<br>
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...<br>
<br>
If it were about security, fax machines would actually encrypt a fax but they don’t... <br>
<br>
<br>
On 3/6/11 1:55 AM, "envelopes envelopes" <<a href="x-msg://11/sunwood360@gmail.com">sunwood360@gmail.com</a>> wrote:<br>
<br>
<br>
<br>
</span></font><blockquote type="cite"><font face="Calibri, Verdana, Helvetica, Arial"><span style="font-size:11pt">that is not true.<br>
<br>
Real estator/law firm/accounting offices/travel agents...many of them still prefer fax for security reasons.<br>
I am always worried about sending my driver license pdf file via e-mail.<br>
<br>
<br>
<br>
On Sat, Mar 5, 2011 at 11:34 PM, curriegrad2004 <<a href="x-msg://11/curriegrad2004@gmail.com">curriegrad2004@gmail.com</a>> wrote:<br>
<br>
<br>
</span></font><blockquote type="cite"><font face="Calibri, Verdana, Helvetica, Arial"><span style="font-size:11pt">That's why PDF's/XPS/tiff's have replaced fax completely. Not many<br>
people out there still do have a fax machine :)<br>
<br>
On Sat, Mar 5, 2011 at 10:56 PM, Ken Rice <<a href="x-msg://11/krice@freeswitch.org">krice@freeswitch.org</a>> wrote:<br>
> Ok<br>
><br>
> will sending a fax over it work... The answer is yes it will work..<br>
> will it work reliably, no<br>
><br>
> Faxing just needs to die already...<br>
> The problem you have here with Faxing over G711 (PCMU or PCMA) is that<br>
> faxing uses a modem to encode a digital signal into an analog carrier meant<br>
> for a circuit switch voice network with a constant amount of delay and<br>
> guaranteed delivery of the entire analog stream<br>
><br>
> VoIP by definition is Voice Over Internet Protocol... IP is a packet<br>
> switched network, where you can no guarantee a constant amount delay<br>
> (latency) ... Not to mention it is not common to see a udp packet or 2<br>
> missing along the way.<br>
><br>
> Where as 1 20ms packet may not seem like much to you, that’s roughtly<br>
> equivalent to 575bytes of data in the fax and it will screw up the fax<br>
> either causing a corruption of the data, or a drop in the analog modem<br>
> carrier which requires a retrain...<br>
><br>
><br>
><br>
><br>
> On 3/5/11 11:35 PM, "envelopes envelopes" <<a href="x-msg://11/sunwood360@gmail.com">sunwood360@gmail.com</a>> wrote:<br>
><br>
> ok,<br>
><br>
> Reliability is a different issue. I am just wondering whether mod_dingaling<br>
> supports fax via GV. because someone proved sending fax via GV from fax<br>
> machine did work<br>
> .(<a href="http://www.magicjacksupport.com/faxing-via-google-voice-t7412.html">http://www.magicjacksupport.com/faxing-via-google-voice-t7412.html</a>).<br>
><br>
><br>
><br>
> On Sat, Mar 5, 2011 at 9:18 PM, curriegrad2004 <<a href="x-msg://11/curriegrad2004@gmail.com">curriegrad2004@gmail.com</a>><br>
> wrote:<br>
><br>
> And relativity comes into play too.<br>
><br>
> Also you do need to realize that the packets sent via UDP isn't<br>
> guaranteed to be in order as the fax machine expects the data to be<br>
> sent in order, not out of order. That's the beauty of packet switched<br>
> networks.<br>
><br>
> On Sat, Mar 5, 2011 at 7:29 PM, Steve Underwood <<a href="x-msg://11/steveu@coppice.org">steveu@coppice.org</a>> wrote:<br>
>> On 03/06/2011 11:21 AM, envelopes envelopes wrote:<br>
>>><br>
>>> Why is PCMU codec not reliable?<br>
>>><br>
>>><br>
>> Unsynchronised clocks, and packet loss.<br>
>><br>
>> Steve<br>
>><br>
>><br>
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