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<div class=Section1>
<p class=MsoNormal style='mso-layout-grid-align:none;text-autospace:none'><font
size=2 color=navy face="Courier New"><span style='font-size:10.0pt;font-family:
"Courier New";color:navy'>Suppose a company has a U.S. office and a foreign
office, and would like to make toll-free calls using IP between the offices.
The U.S office will have an Asterisk system, but the foreign office has a large
legacy PBX that they want to keep. </span></font><font size=2 color=navy
face="Courier New"><span style='font-size:10.0pt;font-family:"Courier New";
color:navy;mso-color-alt:windowtext'><o:p></o:p></span></font></p>
<p class=MsoNormal style='mso-layout-grid-align:none;text-autospace:none'><font
size=2 color=navy face="Courier New"><span style='font-size:10.0pt;font-family:
"Courier New";color:navy'><![if !supportEmptyParas]> <![endif]></span></font><font
size=2 color=navy face="Courier New"><span style='font-size:10.0pt;font-family:
"Courier New";color:navy;mso-color-alt:windowtext'><o:p></o:p></span></font></p>
<p class=MsoNormal style='mso-layout-grid-align:none;text-autospace:none'><font
size=2 color=navy face="Courier New"><span style='font-size:10.0pt;font-family:
"Courier New";color:navy'>One way to do this is to install a Mediatrix FXO
gateway at the foreign office. This gateway could be connected to a couple of
unused tip/ring station ports on the legacy PBX system. I assume that when the
Mediatrix registers with Asterisk, it does so as a single SIP endpoint. Suppose
this endpoint is SIP/mediatrix, and my extensions.conf routes all extensions
beginning with 4 to SIP/mediatrix, like this:</span></font><font size=2
color=navy face="Courier New"><span style='font-size:10.0pt;font-family:"Courier New";
color:navy;mso-color-alt:windowtext'><o:p></o:p></span></font></p>
<p class=MsoNormal style='mso-layout-grid-align:none;text-autospace:none'><font
size=2 color=navy face="Courier New"><span style='font-size:10.0pt;font-family:
"Courier New";color:navy'><![if !supportEmptyParas]> <![endif]></span></font><font
size=2 color=navy face="Courier New"><span style='font-size:10.0pt;font-family:
"Courier New";color:navy;mso-color-alt:windowtext'><o:p></o:p></span></font></p>
<p class=MsoNormal style='mso-layout-grid-align:none;text-autospace:none'><font
size=2 color=navy face="Courier New"><span style='font-size:10.0pt;font-family:
"Courier New";color:navy'>exten => _4XXX, Dial(SIP/mediatrix,15)</span></font><font
size=2 color=navy face="Courier New"><span style='font-size:10.0pt;font-family:
"Courier New";color:navy;mso-color-alt:windowtext'><o:p></o:p></span></font></p>
<p class=MsoNormal style='mso-layout-grid-align:none;text-autospace:none'><font
size=2 color=navy face="Courier New"><span style='font-size:10.0pt;font-family:
"Courier New";color:navy'><![if !supportEmptyParas]> <![endif]></span></font><font
size=2 color=navy face="Courier New"><span style='font-size:10.0pt;font-family:
"Courier New";color:navy;mso-color-alt:windowtext'><o:p></o:p></span></font></p>
<p class=MsoNormal style='mso-layout-grid-align:none;text-autospace:none'><font
size=2 color=navy face="Courier New"><span style='font-size:10.0pt;font-family:
"Courier New";color:navy'>When I dial such an extension from the U.S. office,
presumably the Mediatrix at the foreign office will intercept the call, but
then what? What I would like it do do is go off hook on one of the tip/ring
ports on the legacy PBX, and dial the last 3 digits to reach another extension
off the PBX. Can it be programmed to do this? Or does the caller hear the
Mediatrix answering the call and then have to enter the desired extension
manually? </span></font><font size=2 color=navy face="Courier New"><span
style='font-size:10.0pt;font-family:"Courier New";color:navy;mso-color-alt:
windowtext'><o:p></o:p></span></font></p>
<p class=MsoNormal style='mso-layout-grid-align:none;text-autospace:none'><font
size=2 color=navy face="Courier New"><span style='font-size:10.0pt;font-family:
"Courier New";color:navy'><![if !supportEmptyParas]> <![endif]></span></font><font
size=2 color=navy face="Courier New"><span style='font-size:10.0pt;font-family:
"Courier New";color:navy;mso-color-alt:windowtext'><o:p></o:p></span></font></p>
<p class=MsoNormal style='mso-layout-grid-align:none;text-autospace:none'><font
size=2 color=navy face="Courier New"><span style='font-size:10.0pt;font-family:
"Courier New";color:navy'>I have a similar question for the reverse direction.
What exactly does the caller from the foreign office have to do to reach an
extension in the U.S. office? Thanks very much.</span></font><font size=2
color=navy face="Courier New"><span style='font-size:10.0pt;font-family:"Courier New";
color:navy;mso-color-alt:windowtext'><o:p></o:p></span></font></p>
<p class=MsoNormal style='mso-layout-grid-align:none;text-autospace:none'><font
size=2 color=navy face="Courier New"><span style='font-size:10.0pt;font-family:
"Courier New";color:navy'><![if !supportEmptyParas]> <![endif]></span></font><font
size=2 color=navy face="Courier New"><span style='font-size:10.0pt;font-family:
"Courier New";color:navy;mso-color-alt:windowtext'><o:p></o:p></span></font></p>
<p class=MsoNormal style='mso-layout-grid-align:none;text-autospace:none'><font
size=2 color=navy face="Courier New"><span style='font-size:10.0pt;font-family:
"Courier New";color:navy'>-Ron</span></font><font size=2 color=navy
face="Courier New"><span style='font-size:10.0pt;font-family:"Courier New";
color:navy;mso-color-alt:windowtext'><o:p></o:p></span></font></p>
<p class=MsoNormal style='mso-layout-grid-align:none;text-autospace:none'><font
size=2 color=navy face="Courier New"><span style='font-size:10.0pt;font-family:
"Courier New";color:navy'><![if !supportEmptyParas]> <![endif]></span></font><font
size=2 color=navy face="Courier New"><span style='font-size:10.0pt;font-family:
"Courier New";color:navy;mso-color-alt:windowtext'><o:p></o:p></span></font></p>
<p class=MsoNormal><font size=3 color=black face="Times New Roman"><span
style='font-size:12.0pt;color:black'><![if !supportEmptyParas]> <![endif]></span></font><font
color=black><span style='color:black;mso-color-alt:windowtext'><o:p></o:p></span></font></p>
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