<html><head><meta http-equiv="Content-Type" content="text/html charset=utf-8"></head><body style="word-wrap: break-word; -webkit-nbsp-mode: space; -webkit-line-break: after-white-space;" class=""><div class=""><br class=""></div>If the customer truly has an SBC I don’t see why you couldn’t put the Carrier information in the SDP going out to the customer. Same thing going back, Customer SDP on 200 OK back to the carrier. Most customers in Hosted PBX don’t have an SBC however, they have a dumb firewall. In the case of a dumb firewall (or worse a broken SIP ALG) you are risking one way audio problems if the Carrier SBC doesn’t handle RTP latching.<br class=""><div class="">
<div style="color: rgb(0, 0, 0); font-family: Helvetica; font-size: 12px; font-style: normal; font-variant: normal; font-weight: normal; letter-spacing: normal; line-height: normal; orphans: auto; text-align: start; text-indent: 0px; text-transform: none; white-space: normal; widows: auto; word-spacing: 0px; -webkit-text-stroke-width: 0px; word-wrap: break-word; -webkit-nbsp-mode: space; -webkit-line-break: after-white-space;" class=""><br class="Apple-interchange-newline">—</div><div style="color: rgb(0, 0, 0); font-family: Helvetica; font-size: 12px; font-style: normal; font-variant: normal; font-weight: normal; letter-spacing: normal; line-height: normal; orphans: auto; text-align: start; text-indent: 0px; text-transform: none; white-space: normal; widows: auto; word-spacing: 0px; -webkit-text-stroke-width: 0px; word-wrap: break-word; -webkit-nbsp-mode: space; -webkit-line-break: after-white-space;" class=""><br class=""></div><div style="color: rgb(0, 0, 0); font-family: Helvetica; font-size: 12px; font-style: normal; font-variant: normal; font-weight: normal; letter-spacing: normal; line-height: normal; orphans: auto; text-align: start; text-indent: 0px; text-transform: none; white-space: normal; widows: auto; word-spacing: 0px; -webkit-text-stroke-width: 0px; word-wrap: break-word; -webkit-nbsp-mode: space; -webkit-line-break: after-white-space;" class="">Matthew Crocker<br class="">President - Crocker Communications, Inc.<br class="">Managing Partner - Crocker Telecommunications, LLC<br class="">E: <a href="mailto:matthew@corp.crocker.com" class="">matthew@corp.crocker.com</a><br class="">E: <a href="mailto:matthew@crocker.com" class="">matthew@crocker.com</a><br class=""><br class=""></div>
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<br class=""><div><blockquote type="cite" class=""><div class="">On Apr 18, 2016, at 9:39 AM, Kumudu Suriyaarachchi <<a href="mailto:kumudu.voip@gmail.com" class="">kumudu.voip@gmail.com</a>> wrote:</div><br class="Apple-interchange-newline"><div class=""><div dir="ltr" class=""><p class="MsoNormal">Hello,</p><div class=""> <br class="webkit-block-placeholder"></div><p class="MsoNormal">Is there a mechanism to achieve media bypass from the
customer premise SBC to peering/carrier SBC where in a typical NAT
traversal hosted PBX deployment?</p><p class="MsoNormal">I am talking about multi-vendor SBCs on the access and the
peering sides.</p><div class=""> <br class="webkit-block-placeholder"></div><p class="MsoNormal">Thanks,</p>
<span style="font-size:11pt;font-family:Calibri,sans-serif" class="">Kumudu</span><br class=""><div class=""><span style="font-size:11pt;font-family:Calibri,sans-serif" class=""><br class=""></span></div><div class=""><span style="font-size:11pt;font-family:Calibri,sans-serif" class=""><br class=""></span></div></div>
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