<div dir="ltr"><div>Our current Polycom phones send the following in the SDP:</div><div><span id="docs-internal-guid-dded8f1b-d2b7-590e-be56-075862656a36"><p dir="ltr" style="line-height:1.15;margin-top:0pt;margin-bottom:0pt">
<span style="font-size:15px;font-family:Arial;color:rgb(0,0,0);background-color:transparent;vertical-align:baseline;white-space:pre-wrap">a=rtpmap:0 PCMU/8000</span></p><p dir="ltr" style="line-height:1.15;margin-top:0pt;margin-bottom:0pt">
<span style="font-size:15px;font-family:Arial;color:rgb(0,0,0);background-color:transparent;vertical-align:baseline;white-space:pre-wrap">a=rtpmap:8 PCMA/8000</span></p><p dir="ltr" style="line-height:1.15;margin-top:0pt;margin-bottom:0pt">
<span style="font-size:15px;font-family:Arial;color:rgb(0,0,0);background-color:transparent;vertical-align:baseline;white-space:pre-wrap">a=rtpmap:18 G729/8000</span></p><div><br></div><div>We added a 550 phone and now the preferred coded is G722</div>
<div><span id="docs-internal-guid-dded8f1b-d2b8-7a62-d537-dfbc2e25aebc"><p dir="ltr" style="line-height:1.15;margin-top:0pt;margin-bottom:0pt"><span style="font-size:15px;font-family:Arial;color:rgb(0,0,0);background-color:transparent;vertical-align:baseline;white-space:pre-wrap"><b>a=rtpmap:9 G722/8000</b></span></p>
<p dir="ltr" style="line-height:1.15;margin-top:0pt;margin-bottom:0pt"><span style="font-size:15px;font-family:Arial;color:rgb(0,0,0);background-color:transparent;vertical-align:baseline;white-space:pre-wrap">a=rtpmap:0 PCMU/8000</span></p>
<p dir="ltr" style="line-height:1.15;margin-top:0pt;margin-bottom:0pt"><span style="font-size:15px;font-family:Arial;color:rgb(0,0,0);background-color:transparent;vertical-align:baseline;white-space:pre-wrap">a=rtpmap:8 PCMA/8000</span></p>
<p dir="ltr" style="line-height:1.15;margin-top:0pt;margin-bottom:0pt"><span style="font-size:15px;font-family:Arial;color:rgb(0,0,0);background-color:transparent;vertical-align:baseline;white-space:pre-wrap">a=rtpmap:18 G729/8000</span></p>
<div><span style="font-size:15px;font-family:Arial;color:rgb(0,0,0);background-color:transparent;vertical-align:baseline;white-space:pre-wrap"><br></span></div><div><span style="font-size:15px;font-family:Arial;color:rgb(0,0,0);background-color:transparent;vertical-align:baseline;white-space:pre-wrap">Our IVR application (socket) plays files recorded in PCMU format.</span></div>
<div><span style="font-size:15px;font-family:Arial;color:rgb(0,0,0);background-color:transparent;vertical-align:baseline;white-space:pre-wrap"><br></span></div><div><span style="font-size:15px;font-family:Arial;color:rgb(0,0,0);background-color:transparent;vertical-align:baseline;white-space:pre-wrap">When the new phone connects (G722), the play function is now looking for files ending in .G722 (which do not exist).</span></div>
<div><span style="font-size:15px;font-family:Arial;color:rgb(0,0,0);background-color:transparent;vertical-align:baseline;white-space:pre-wrap"><br></span></div><div><span style="font-size:15px;font-family:Arial;color:rgb(0,0,0);background-color:transparent;vertical-align:baseline;white-space:pre-wrap">How do you negotiate a codec without a B leg?
I'd like the phone to use G722 when connected to other G722 phones, but use PCMU if connected to a socket application.</span></div><div><span style="font-size:15px;font-family:Arial;color:rgb(0,0,0);background-color:transparent;vertical-align:baseline;white-space:pre-wrap"><br>
</span></div><div><span style="font-size:15px;font-family:Arial;color:rgb(0,0,0);background-color:transparent;vertical-align:baseline;white-space:pre-wrap">Thank you,</span></div><div><span style="font-size:15px;font-family:Arial;color:rgb(0,0,0);background-color:transparent;vertical-align:baseline;white-space:pre-wrap">Ian.</span></div>
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