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<p class=MsoNormal><font size=2 color=navy face=Arial><span style='font-size:
10.0pt;font-family:Arial;color:navy'>Also be wary of the loop you get. <o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 color=navy face=Arial><span style='font-size:
10.0pt;font-family:Arial;color:navy'><o:p> </o:p></span></font></p>
<p class=MsoNormal><font size=2 color=navy face=Arial><span style='font-size:
10.0pt;font-family:Arial;color:navy'>Depending on the Telco you are dealing
with, and the type of loop you get, “Alarm circuit, etc.” they may
, and have the right to, put in a low pass circuit to limit bandwidth to 15
Hz. That keeps people from using cheap alarm circuits for voice. It is not
likely they will go to the trouble. But, they can do it.<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 color=navy face=Arial><span style='font-size:
10.0pt;font-family:Arial;color:navy'><o:p> </o:p></span></font></p>
<p class=MsoNormal><font size=2 color=navy face=Arial><span style='font-size:
10.0pt;font-family:Arial;color:navy'>Cary Fitch<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 color=navy face=Arial><span style='font-size:
10.0pt;font-family:Arial;color:navy'><o:p> </o:p></span></font></p>
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<p class=MsoNormal><b><font size=2 color=black face=Tahoma><span
style='font-size:10.0pt;font-family:Tahoma;color:windowtext;font-weight:bold'>From:</span></font></b><font
size=2 color=black face=Tahoma><span style='font-size:10.0pt;font-family:Tahoma;
color:windowtext'> asterisk-users-bounces@lists.digium.com
[mailto:asterisk-users-bounces@lists.digium.com] <b><span style='font-weight:
bold'>On Behalf Of </span></b>John Novack<br>
<b><span style='font-weight:bold'>Sent:</span></b> Tuesday, May 26, 2009 9:26
AM<br>
<b><span style='font-weight:bold'>To:</span></b> baldvin@rogg.is; Asterisk
Users Mailing List - Non-Commercial Discussion<br>
<b><span style='font-weight:bold'>Subject:</span></b> Re: [asterisk-users]
Maximum cable length for analog phone from FXS port</span></font><font size=3
color=black face="Times New Roman"><span style='font-size:12.0pt;font-family:
"Times New Roman";color:windowtext'><o:p></o:p></span></font></p>
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<p class=MsoNormal><font size=2 color=black face=Calibri><span
style='font-size:11.0pt'><o:p> </o:p></span></font></p>
<p class=MsoNormal><font size=4 color=black face=Arial><span style='font-size:
13.5pt;font-family:Arial'>That is a pretty long run.<br>
The type of analog phone can be an issue. How LITTLE loop current will it
operate on? Most need more than 20 Ma to signal properly, and the voltage
output of the ATA needs to be known<br>
Type of signaling? DTMF? pulse?<br>
Interconnection cable wire size and capacitance will affect high frequency
response, loop current, inductive pickup and pulse shaping to name just a few.
The ATA requirements need to be known. A total loop resistance of 500 ohms
should work, but go out to 1200 and most will fail<br>
Do you really have control over this or will you be renting a pair from the
local telco?<br>
Protection should be applied on both ends for safety of the user(s) and
devices.<br>
There MUST be a better way???<br>
</span></font><br>
<a href="mailto:asterisk-users@rogg.is">asterisk-users@rogg.is</a> wrote: <o:p></o:p></p>
<p class=MsoNormal><font size=2 color=black face=Calibri><span
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</xml><![endif]-->Hello.<o:p></o:p></span></font><u5:p></u5:p></p>
<p class=MsoNormal><u5:p><font size=2 color=black face=Calibri><span
style='font-size:11.0pt'> <o:p></o:p></span></font></u5:p></p>
<p class=MsoNormal><font size=2 color=black face=Calibri><span
style='font-size:11.0pt'>I am looking for details of the maximum
allowed/usable/effective wire/cable length of the connection from a FXS <st1:place
w:st="on"><st1:PlaceType w:st="on">port</st1:PlaceType> of <st1:PlaceName
w:st="on">Digium</st1:PlaceName></st1:place> analog cards to the analog
telephone handset.<o:p></o:p></span></font><u5:p></u5:p></p>
<p class=MsoNormal><u5:p><font size=2 color=black face=Calibri><span
style='font-size:11.0pt'> <o:p></o:p></span></font></u5:p></p>
<p class=MsoNormal><font size=2 color=black face=Calibri><span
style='font-size:11.0pt'>To clarify my intention, I need to have an analog
telephone connection to my asterisk box that is 3000 meters (3km) away at
least. If you have any details of ATA boxes or other similar devices that I
could use to do this, I‘d appreciate your input. It must be able to use a
regular analog telephone handset on the far end.<o:p></o:p></span></font><u5:p></u5:p></p>
<p class=MsoNormal><u5:p><font size=2 color=black face=Calibri><span
style='font-size:11.0pt'> <o:p></o:p></span></font></u5:p></p>
<p class=MsoNormal><font size=2 color=black face=Calibri><span
style='font-size:11.0pt'>I‘ve searched high and low and either I‘m
not clever enough in using the right terms for this or it is rarely documented?<o:p></o:p></span></font><u5:p></u5:p></p>
<p class=MsoNormal><u5:p><font size=2 color=black face=Calibri><span
style='font-size:11.0pt'> <o:p></o:p></span></font></u5:p></p>
<p class=MsoNormal><font size=2 color=black face=Calibri><span
style='font-size:11.0pt'>Any details much appreciated.<o:p></o:p></span></font><u5:p></u5:p></p>
<p class=MsoNormal><u5:p><font size=2 color=black face=Calibri><span
style='font-size:11.0pt'> <o:p></o:p></span></font></u5:p></p>
<p class=MsoNormal><font size=2 color=black face=Calibri><span
style='font-size:11.0pt'>Thank you!<o:p></o:p></span></font><u5:p></u5:p></p>
<p class=MsoNormal><font size=2 color=black face=Calibri><span
style='font-size:11.0pt'>Baldvin<o:p></o:p></span></font><u5:p></u5:p></p>
<p class=MsoNormal><u5:p><font size=2 color=black face=Calibri><span
style='font-size:11.0pt'> <o:p></o:p></span></font></u5:p></p>
<pre wrap=""><font size=2 color=black face="Courier New"><span
style='font-size:10.0pt'><o:p> </o:p></span></font></pre><pre
style='text-align:center'><font size=2 color=black face="Courier New"><span
style='font-size:10.0pt'>
<hr size=4 width="90%" align=center>
</span></font></pre><pre><font size=2 color=black face="Courier New"><span
style='font-size:10.0pt'><o:p> </o:p></span></font></pre><pre><font
size=2 color=black face="Courier New"><span style='font-size:10.0pt'>_______________________________________________<o:p></o:p></span></font></pre><pre><font
size=2 color=black face="Courier New"><span style='font-size:10.0pt'>-- Bandwidth and Colocation Provided by <a
href="http://www.api-digital.com">http://www.api-digital.com</a> --<o:p></o:p></span></font></pre><pre><font
size=2 color=black face="Courier New"><span style='font-size:10.0pt'><o:p> </o:p></span></font></pre><pre><font
size=2 color=black face="Courier New"><span style='font-size:10.0pt'>asterisk-users mailing list<o:p></o:p></span></font></pre><pre><font
size=2 color=black face="Courier New"><span style='font-size:10.0pt'>To UNSUBSCRIBE or update options visit:<o:p></o:p></span></font></pre><pre><font
size=2 color=black face="Courier New"><span style='font-size:10.0pt'> <a
href="http://lists.digium.com/mailman/listinfo/asterisk-users">http://lists.digium.com/mailman/listinfo/asterisk-users</a><o:p></o:p></span></font></pre>
<p class=MsoNormal><font size=3 color=black face="Times New Roman"><span
style='font-size:12.0pt;font-family:"Times New Roman"'><br>
<br>
<o:p></o:p></span></font></p>
<pre><font size=2 color=black face="Courier New"><span style='font-size:10.0pt'>-- <o:p></o:p></span></font></pre><pre><font
size=2 color=black face="Courier New"><span style='font-size:10.0pt'>Dog is my co-pilot<o:p></o:p></span></font></pre></div>
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