<div class=MsoNormal style="MARGIN: 0cm 0cm 0pt"><FONT face=arial>Sorry if I post in this forum, this may be not the right one, but I hope to find in here some experts which could help me out.</FONT></div> <div class=MsoNormal style="MARGIN: 0cm 0cm 0pt"><FONT face=arial> <?xml:namespace prefix = o ns = "urn:schemas-microsoft-com:office:office" /><o:p></o:p></FONT></div> <div class=MsoNormal style="MARGIN: 0cm 0cm 0pt"><FONT face=arial>I have in one location 8 extensions from a Panasonic PBX “KX-TD1232“ connected to FXO Ports on an MultiVoIP Gateway from Multitech.</FONT></div> <div class=MsoNormal style="MARGIN: 0cm 0cm 0pt"><FONT face=arial> <o:p></o:p></FONT></div> <div class=MsoNormal style="MARGIN: 0cm 0cm 0pt"><FONT face=arial>On the other location I have 8 SP5100 IP-Phones from Micronet as remote extensions.</FONT></div> <div class=MsoNormal style="MARGIN: 0cm 0cm 0pt"><FONT face=arial> <o:p></o:p></FONT></div> <div class=MsoNormal style="MARGIN:
0cm 0cm 0pt"><FONT face=arial>Between the locations I have a VPN.</FONT></div> <div class=MsoNormal style="MARGIN: 0cm 0cm 0pt"><FONT face=arial> <o:p></o:p></FONT></div> <div class=MsoNormal style="MARGIN: 0cm 0cm 0pt"><FONT face=arial>If I call from an IP-Phone to a local extension on the Panasonic PBX or if a local extension from the Panasonic PBX calls to an remote IP-Phone, the voice quality is o.k.</FONT></div> <div class=MsoNormal style="MARGIN: 0cm 0cm 0pt"><FONT face=arial> <o:p></o:p></FONT></div> <div class=MsoNormal style="MARGIN: 0cm 0cm 0pt"><FONT face=arial>If I receive a call from the PSTN to a remote IP-Phone or if a remote IP Phone calls someone over the PSTN, the person on the PSTN can’t almost hear anything. The voice volume ist to low.</FONT></div> <div class=MsoNormal style="MARGIN: 0cm 0cm 0pt"><FONT face=arial> <o:p></o:p></FONT></div> <div class=MsoNormal style="MARGIN: 0cm 0cm 0pt"><FONT face=arial>I tried with different
Codec’s with Echo cancellation or without, with silence suppression or without, on the Gateway as with the IP-Phones etc. nothing helps!</FONT></div> <div class=MsoNormal style="MARGIN: 0cm 0cm 0pt"><FONT face=arial> <o:p></o:p></FONT></div> <div class=MsoNormal style="MARGIN: 0cm 0cm 0pt"><FONT face=arial>I contacted a company specialised in Panasonic PBX and with them we changed the EPROM on the PBX which increases the volume between trunk lines, but with no results.</FONT></div> <div class=MsoNormal style="MARGIN: 0cm 0cm 0pt"><FONT face=arial> <o:p></o:p></FONT></div> <div class=MsoNormal style="MARGIN: 0cm 0cm 0pt"><FONT face=arial>Now I have the Output Gain on the IP-Phones set to the maximum and on the MultiVoIP Gateway I increased the Output Gain 7 db.</FONT></div> <div class=MsoNormal style="MARGIN: 0cm 0cm 0pt"><FONT face=arial> <o:p></o:p></FONT></div> <div class=MsoNormal style="MARGIN: 0cm 0cm 0pt"><FONT face=arial>The Person on the PSTN
can hear now better but with calls between local extensions and<SPAN style="mso-spacerun: yes"> </SPAN>remote IP-Phones, the volume is now too loud and with noise and echo.</FONT></div> <div class=MsoNormal style="MARGIN: 0cm 0cm 0pt"><FONT face=arial> <o:p></o:p></FONT></div> <div class=MsoNormal style="MARGIN: 0cm 0cm 0pt"><FONT face=arial>Why everything works well<SPAN style="mso-spacerun: yes"> </SPAN>with calls made<SPAN style="mso-spacerun: yes"> </SPAN>from local PBX extensions to remote IP-Phones but it does not work with calls from or to remote IP-Phones over the PSTN.</FONT></div> <div class=MsoNormal style="MARGIN: 0cm 0cm 0pt"><FONT face=arial> <o:p></o:p></FONT></div> <div class=MsoNormal style="MARGIN: 0cm 0cm 0pt"><FONT face=arial>Where could be the problem of this issue?</FONT></div> <div class=MsoNormal style="MARGIN: 0cm 0cm 0pt"><FONT face=arial> <o:p></o:p></FONT></div> <div class=MsoNormal style="MARGIN: 0cm 0cm
0pt"><FONT face=arial>Thanks for helping in advance...</FONT></div> <div class=MsoNormal style="MARGIN: 0cm 0cm 0pt"><FONT face=arial> <o:p></o:p></FONT></div> <div class=MsoNormal style="MARGIN: 0cm 0cm 0pt"><FONT face=arial> <o:p></o:p></FONT></div><SPAN lang=EN-US style="FONT-SIZE: 12pt; COLOR: black; FONT-FAMILY: 'Times New Roman'; mso-fareast-font-family: 'Times New Roman'; mso-ansi-language: EN-US; mso-fareast-language: ES; mso-bidi-language: AR-SA"><FONT face=arial size=2>Housi Mueller</FONT></SPAN><p>
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