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</o:shapelayout></xml><![endif]--></head><body lang=EN-US link=blue vlink=purple><div class=WordSection1><p class=MsoNormal>I didn’t see any reference to cloud registered… I should stop looking at my email tonight.<o:p></o:p></p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal><b>From:</b> Anthony Holloway <avholloway+cisco-voip@gmail.com> <br><b>Sent:</b> Friday, October 4, 2019 9:11 PM<br><b>To:</b> Ryan Huff <ryanhuff@outlook.com><br><b>Cc:</b> NateCCIE <nateccie@gmail.com>; cisco-voip voyp list <cisco-voip@puck.nether.net><br><b>Subject:</b> Re: [cisco-voip] SIP Domain substitution<o:p></o:p></p><p class=MsoNormal><o:p> </o:p></p><div><p class=MsoNormal>On a Friday night no less.<o:p></o:p></p></div><p class=MsoNormal><o:p> </o:p></p><div><div><p class=MsoNormal>On Fri, Oct 4, 2019 at 10:08 PM Ryan Huff <<a href="mailto:ryanhuff@outlook.com">ryanhuff@outlook.com</a>> wrote:<o:p></o:p></p></div><blockquote style='border:none;border-left:solid #CCCCCC 1.0pt;padding:0in 0in 0in 6.0pt;margin-left:4.8pt;margin-right:0in'><div><p class=MsoNormal style='margin-bottom:12.0pt'>Come on... we are geeks here.... we are going to run this down every possible avenue regardless :)<o:p></o:p></p><div><p class=MsoNormal>Sent from my iPhone<o:p></o:p></p></div><div><p class=MsoNormal><br><br><o:p></o:p></p><blockquote style='margin-top:5.0pt;margin-bottom:5.0pt'><p class=MsoNormal style='margin-bottom:12.0pt'>On Oct 4, 2019, at 23:06, Anthony Holloway <<a href="mailto:avholloway%2Bcisco-voip@gmail.com" target="_blank">avholloway+cisco-voip@gmail.com</a>> wrote:<o:p></o:p></p></blockquote></div><blockquote style='margin-top:5.0pt;margin-bottom:5.0pt'><div><p class=MsoNormal> <o:p></o:p></p><div><p class=MsoNormal>I think Lelio was wondering about a pure cloud registered device, and then simply purchasing a vanity domain to overlay on top of the ugly webex one. <o:p></o:p></p><div><p class=MsoNormal><o:p> </o:p></p></div><div><p class=MsoNormal>You know....like <a href="https://nam12.safelinks.protection.outlook.com/?url=https%3A%2F%2Fblog.rebrandly.com%2Fthe-history-of-url-shorteners%2F&data=02%7C01%7C%7C4df4b81e7de446bcd2fa08d749410008%7C84df9e7fe9f640afb435aaaaaaaaaaaa%7C1%7C0%7C637058415823445677&sdata=BK7X5LPEj%2FERkvJhhoKkxhGYbUFaMYDYuHIE3rjPGsE%3D&reserved=0" target="_blank">URL shortening</a>. <o:p></o:p></p></div></div><p class=MsoNormal><o:p> </o:p></p><div><div><p class=MsoNormal>On Fri, Oct 4, 2019 at 9:57 PM NateCCIE <<a href="mailto:nateccie@gmail.com" target="_blank">nateccie@gmail.com</a>> wrote:<o:p></o:p></p></div><blockquote style='border:none;border-left:solid #CCCCCC 1.0pt;padding:0in 0in 0in 6.0pt;margin-left:4.8pt;margin-right:0in'><div><div><p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'>Doesn’t cucm have the ability to look at the user portion of the URI only? For like when you’re routing to a DN? Or I think you can add the short domain to the list of the CUCM “owned” domains in enterprise parameters.<o:p></o:p></p><p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'> <o:p></o:p></p><div><div style='border:none;border-top:solid #E1E1E1 1.0pt;padding:3.0pt 0in 0in 0in'><p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><b>From:</b> Ryan Huff <<a href="mailto:ryanhuff@outlook.com" target="_blank">ryanhuff@outlook.com</a>> <br><b>Sent:</b> Friday, October 4, 2019 8:51 PM<br><b>To:</b> NateCCIE <<a href="mailto:nateccie@gmail.com" target="_blank">nateccie@gmail.com</a>><br><b>Cc:</b> Lelio Fulgenzi <<a href="mailto:lelio@uoguelph.ca" target="_blank">lelio@uoguelph.ca</a>>; cisco-voip voyp list <<a href="mailto:cisco-voip@puck.nether.net" target="_blank">cisco-voip@puck.nether.net</a>><br><b>Subject:</b> Re: [cisco-voip] SIP Domain substitution<o:p></o:p></p></div></div><p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'> <o:p></o:p></p><p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'>Hey Nate ... the original ask I think, was to do it all with DNS only and no intervention at layer 4, which to my knowledge, DNS alone couldn’t do. <o:p></o:p></p><div><p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'> <o:p></o:p></p></div><div><p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'>Expressway search rule, CUCM LUA script... etc could all do it in reality.<o:p></o:p></p></div><div><p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'> <o:p></o:p></p></div><div><p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'>However, the actual goal appears to be dialing a Webex cloud registered codec, using a non cloud uri (<a href="mailto:...@rooms.webex.com" target="_blank">...@rooms.webex.com</a>), and for that Webex Hybrid calling with Expressway B2B would get you there, and also checks the “no additional transformation needed” box.<o:p></o:p></p><div><p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'> <o:p></o:p></p></div><div><div><p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'>Sent from my iPhone<o:p></o:p></p></div><div><p class=MsoNormal style='mso-margin-top-alt:auto;margin-bottom:12.0pt'><o:p> </o:p></p><blockquote style='margin-top:5.0pt;margin-bottom:5.0pt'><p class=MsoNormal style='mso-margin-top-alt:auto;margin-bottom:12.0pt'>On Oct 4, 2019, at 22:41, NateCCIE <<a href="mailto:nateccie@gmail.com" target="_blank">nateccie@gmail.com</a>> wrote:<o:p></o:p></p></blockquote></div><blockquote style='margin-top:5.0pt;margin-bottom:5.0pt'><div><p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'> I am not thinking right? Can’t a dns srv get the call routed to a specific host? Then a quick expressway transform to change the domain, and you’re done. <o:p></o:p></p><div><p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'> <o:p></o:p></p></div><div><p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'>Think of it as a different internal domain va external domain.<o:p></o:p></p></div><div><p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'> <o:p></o:p></p></div><div><p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><a href="mailto:Foo@company.com" target="_blank">Foo@company.com</a> does goes to <a href="https://nam12.safelinks.protection.outlook.com/?url=http%3A%2F%2Fexpressway.companyinfrastructuredomain.com&data=02%7C01%7C%7C4df4b81e7de446bcd2fa08d749410008%7C84df9e7fe9f640afb435aaaaaaaaaaaa%7C1%7C0%7C637058415823445677&sdata=26dr97QxoCEhEb11y0lmKT7btioRrDIgcTh7f0lpp%2FQ%3D&reserved=0" target="_blank">expressway.companyinfrastructuredomain.com</a> which does a quick trans to <a href="mailto:foo@internal.local" target="_blank">foo@internal.local</a><o:p></o:p></p></div><div><p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'> <o:p></o:p></p></div><div><div><p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'> <o:p></o:p></p><div><p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'>Sent from my iPhone<o:p></o:p></p></div><div><p class=MsoNormal style='mso-margin-top-alt:auto;margin-bottom:12.0pt'><o:p> </o:p></p><blockquote style='margin-top:5.0pt;margin-bottom:5.0pt'><p class=MsoNormal style='mso-margin-top-alt:auto;margin-bottom:12.0pt'>On Oct 4, 2019, at 8:36 PM, Lelio Fulgenzi <<a href="mailto:lelio@uoguelph.ca" target="_blank">lelio@uoguelph.ca</a>> wrote:<o:p></o:p></p></blockquote></div><blockquote style='margin-top:5.0pt;margin-bottom:5.0pt'><div><p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'> <o:p></o:p></p><div><p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'> <o:p></o:p></p></div><p class=MsoNormal style='mso-margin-top-alt:auto;margin-bottom:12.0pt'>Interesting. I’ll have to look into that. Thx. <o:p></o:p></p><div id="gmail-m_-6710398964179065644gmail-m_-5108083527376758525AppleMailSignature"><p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><i>-sent from mobile device-</i><o:p></o:p></p><p class=MsoNormal style='mso-margin-top-alt:auto;margin-bottom:12.0pt'><o:p> </o:p></p><p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><b>Lelio Fulgenzi, B.A.</b> | Senior Analyst<o:p></o:p></p><p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'>Computing and Communications Services | University of Guelph<o:p></o:p></p><p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'>Room 037 Animal Science & Nutrition Bldg | 50 Stone Rd E | Guelph, ON | N1G 2W1<o:p></o:p></p><p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><span style='color:black'><a href="tel:519-824-4120;56354" target="_blank">519-824-4120 Ext. 56354</a> | <a href="mailto:lelio@uoguelph.ca" target="_blank">lelio@uoguelph.ca</a></span><o:p></o:p></p><p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'> <o:p></o:p></p><p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><span style='color:black'><a href="https://nam12.safelinks.protection.outlook.com/?url=http%3A%2F%2Fwww.uoguelph.ca%2Fccs&data=02%7C01%7C%7C4df4b81e7de446bcd2fa08d749410008%7C84df9e7fe9f640afb435aaaaaaaaaaaa%7C1%7C0%7C637058415823455686&sdata=6OmIEsttbas7XV2w7vZ6PFeC7tYVDLvVx%2FTGUFyxjbE%3D&reserved=0" target="_blank">www.uoguelph.ca/ccs</a> | @UofGCCS on Instagram, Twitter and Facebook</span><o:p></o:p></p><p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'> <o:p></o:p></p><p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><o:p></o:p></p></div><div><p class=MsoNormal style='mso-margin-top-alt:auto;margin-bottom:12.0pt'><br>On Oct 4, 2019, at 10:32 PM, Ryan Huff <<a href="mailto:ryanhuff@outlook.com" target="_blank">ryanhuff@outlook.com</a>> wrote:<o:p></o:p></p></div><blockquote style='margin-top:5.0pt;margin-bottom:5.0pt'><div><p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'>Webex Hybrid Calling (with Expressway B2B), could in theory, help accomplish this. The codec is still cloud registered, though Hybrid calling would allow for an on-prem URI to be associated with the Webex remote destination of the codec. <o:p></o:p></p><div><p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'> <o:p></o:p></p></div><div><p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'>The call would come into the on-prem URI via B2B like normal, and assuming the Hybrid integration was setup correctly, ring the Webex remote destination which rings the cloud registered codec.<o:p></o:p></p></div><div><p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'> <o:p></o:p></p></div><div><p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'>It’s a little bit of an ugly trombone, but it does work..<o:p></o:p></p><div><p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'> <o:p></o:p></p><div><p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'>Sent from my iPhone<o:p></o:p></p></div><div><p class=MsoNormal style='mso-margin-top-alt:auto;margin-bottom:12.0pt'><o:p> </o:p></p><blockquote style='margin-top:5.0pt;margin-bottom:5.0pt'><p class=MsoNormal style='mso-margin-top-alt:auto;margin-bottom:12.0pt'>On Oct 4, 2019, at 22:09, Lelio Fulgenzi <<a href="mailto:lelio@uoguelph.ca" target="_blank">lelio@uoguelph.ca</a>> wrote:<o:p></o:p></p></blockquote></div><blockquote style='margin-top:5.0pt;margin-bottom:5.0pt'><div><p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'> <o:p></o:p></p><div><p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'> <o:p></o:p></p></div><p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'>Darn. Double darn. <o:p></o:p></p><div><p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'> <o:p></o:p></p></div><div><p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'>Let’s hope webex offers up custom domain registration for devices soon. <o:p></o:p></p></div><div><p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'> <o:p></o:p></p></div><div><p class=MsoNormal style='mso-margin-top-alt:auto;margin-bottom:12.0pt'>‘Cause <a href="mailto:room123@acme.rooms.webex.com" target="_blank">room123@acme.rooms.webex.com</a> is a bit much. <o:p></o:p></p><div id="gmail-m_-6710398964179065644gmail-m_-5108083527376758525AppleMailSignature"><p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><i>-sent from mobile device-</i><o:p></o:p></p><p class=MsoNormal style='mso-margin-top-alt:auto;margin-bottom:12.0pt'><o:p> </o:p></p><p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><b>Lelio Fulgenzi, B.A.</b> | Senior Analyst<o:p></o:p></p><p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'>Computing and Communications Services | University of Guelph<o:p></o:p></p><p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'>Room 037 Animal Science & Nutrition Bldg | 50 Stone Rd E | Guelph, ON | N1G 2W1<o:p></o:p></p><p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><span style='color:black'><a href="tel:519-824-4120;56354" target="_blank">519-824-4120 Ext. 56354</a> | <a href="mailto:lelio@uoguelph.ca" target="_blank">lelio@uoguelph.ca</a></span><o:p></o:p></p><p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'> <o:p></o:p></p><p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><span style='color:black'><a href="https://nam12.safelinks.protection.outlook.com/?url=http%3A%2F%2Fwww.uoguelph.ca%2Fccs&data=02%7C01%7C%7C4df4b81e7de446bcd2fa08d749410008%7C84df9e7fe9f640afb435aaaaaaaaaaaa%7C1%7C0%7C637058415823455686&sdata=6OmIEsttbas7XV2w7vZ6PFeC7tYVDLvVx%2FTGUFyxjbE%3D&reserved=0" target="_blank">www.uoguelph.ca/ccs</a> | @UofGCCS on Instagram, Twitter and Facebook</span><o:p></o:p></p><p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'> <o:p></o:p></p><p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><o:p></o:p></p></div><div><p class=MsoNormal style='mso-margin-top-alt:auto;margin-bottom:12.0pt'><br>On Oct 4, 2019, at 9:05 PM, Ryan Huff <<a href="mailto:ryanhuff@outlook.com" target="_blank">ryanhuff@outlook.com</a>> wrote:<o:p></o:p></p></div><blockquote style='margin-top:5.0pt;margin-bottom:5.0pt'><div><p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'>What it sounds like you are trying to do to me, is allow the call to ultimately setup with a URI different than the URI that was dialed, without the calling party being the wiser. <o:p></o:p></p><div><p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'> <o:p></o:p></p></div><div><p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'>DNS won’t be able to do anything with regards to that I don’t think, because it really sounds like you’re trying to manipulate/transform the called URI, and you’ll need something to interact with the SIP message stack for that I’d think.<o:p></o:p></p></div><div><p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'> <o:p></o:p></p></div><div><p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'>You can create a round robin A record, that resolves to multiple IP addresses, so when the client looks up the DNS SRV, it receives multiple targets to try before considering the SRV target “unreachable” (SRV weights and priorities determine the ordering of the target addresses resolved for the client). However, this won’t have the ability to change the called URI, which is ultimately what I think you’re attempting in the scenario (DNS and SIP messages are on different networking layers).<o:p></o:p></p></div><div><p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'> <o:p></o:p></p></div><div><p class=MsoNormal style='mso-margin-top-alt:auto;margin-bottom:12.0pt'>As Dave mentioned below, Expressway or a LUA script (sip normalization) in CUCM seems to be uniquely qualified for what you’re wanting to do.<o:p></o:p></p><div><p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'>Sent from my iPhone<o:p></o:p></p></div><div><p class=MsoNormal style='mso-margin-top-alt:auto;margin-bottom:12.0pt'><o:p> </o:p></p><blockquote style='margin-top:5.0pt;margin-bottom:5.0pt'><p class=MsoNormal style='mso-margin-top-alt:auto;margin-bottom:12.0pt'>On Oct 4, 2019, at 20:40, Lelio Fulgenzi <<a href="mailto:lelio@uoguelph.ca" target="_blank">lelio@uoguelph.ca</a>> wrote:<o:p></o:p></p></blockquote></div><blockquote style='margin-top:5.0pt;margin-bottom:5.0pt'><div><p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'> <o:p></o:p></p><div><p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'> <o:p></o:p></p></div><p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'>I’ve seen some references to Cisco SIP proxy server. <o:p></o:p></p><div><p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'> <o:p></o:p></p></div><div><p class=MsoNormal style='mso-margin-top-alt:auto;margin-bottom:12.0pt'>Would that help?<o:p></o:p></p><div id="gmail-m_-6710398964179065644gmail-m_-5108083527376758525AppleMailSignature"><p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><i>-sent from mobile device-</i><o:p></o:p></p><p class=MsoNormal style='mso-margin-top-alt:auto;margin-bottom:12.0pt'><o:p> </o:p></p><p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><b>Lelio Fulgenzi, B.A.</b> | Senior Analyst<o:p></o:p></p><p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'>Computing and Communications Services | University of Guelph<o:p></o:p></p><p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'>Room 037 Animal Science & Nutrition Bldg | 50 Stone Rd E | Guelph, ON | N1G 2W1<o:p></o:p></p><p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><span style='color:black'><a href="tel:519-824-4120;56354" target="_blank">519-824-4120 Ext. 56354</a> | <a href="mailto:lelio@uoguelph.ca" target="_blank">lelio@uoguelph.ca</a></span><o:p></o:p></p><p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'> <o:p></o:p></p><p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><span style='color:black'><a href="https://nam12.safelinks.protection.outlook.com/?url=http%3A%2F%2Fwww.uoguelph.ca%2Fccs&data=02%7C01%7C%7C4df4b81e7de446bcd2fa08d749410008%7C84df9e7fe9f640afb435aaaaaaaaaaaa%7C1%7C0%7C637058415823465691&sdata=ryzes%2BdGBEOYvqvcqvqpF8bWLLtG5xgcWZN6qmnL2EQ%3D&reserved=0" target="_blank">www.uoguelph.ca/ccs</a> | @UofGCCS on Instagram, Twitter and Facebook</span><o:p></o:p></p><p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'> <o:p></o:p></p><p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><o:p></o:p></p></div><div><p class=MsoNormal style='mso-margin-top-alt:auto;margin-bottom:12.0pt'><br>On Oct 4, 2019, at 7:46 PM, Ryan Huff <<a href="mailto:ryanhuff@outlook.com" target="_blank">ryanhuff@outlook.com</a>> wrote:<o:p></o:p></p></div><blockquote style='margin-top:5.0pt;margin-bottom:5.0pt'><div><p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'>According to RFC 2782 (<a href="https://nam12.safelinks.protection.outlook.com/?url=https%3A%2F%2Fwww.ietf.org%2Frfc%2Frfc2782.txt&data=02%7C01%7C%7C4df4b81e7de446bcd2fa08d749410008%7C84df9e7fe9f640afb435aaaaaaaaaaaa%7C1%7C0%7C637058415823465691&sdata=zws9PuMtkFDedn98xKfGYn9EI0chKJMcR4G%2FGcpJePc%3D&reserved=0" target="_blank">https://www.ietf.org/rfc/rfc2782.txt</a>), it does not, under the “Target Definition”; “there must be one or more address records for this name, the name must not be an alias”. <o:p></o:p></p><div><p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'> <o:p></o:p></p></div><div><p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'>However, I can tell you that I have used a CNAME in the SRV target field before, and it appeared to work at the time. Still, depending on the application, doing so could potentially cause some weird issue with regards to PTR or something.<o:p></o:p></p><div><p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'> <o:p></o:p></p><div><p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'>Sent from my iPhone<o:p></o:p></p></div><div><p class=MsoNormal style='mso-margin-top-alt:auto;margin-bottom:12.0pt'><o:p> </o:p></p><blockquote style='margin-top:5.0pt;margin-bottom:5.0pt'><p class=MsoNormal style='mso-margin-top-alt:auto;margin-bottom:12.0pt'>On Oct 4, 2019, at 19:10, Brian Meade <<a href="mailto:bmeade90@vt.edu" target="_blank">bmeade90@vt.edu</a>> wrote:<o:p></o:p></p></blockquote></div><blockquote style='margin-top:5.0pt;margin-bottom:5.0pt'><div><p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'> <o:p></o:p></p><div><p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'>I don't think DNS SRV records support CNAME. Even then, it would only change where it was sent to and not the SIP headers.<o:p></o:p></p></div><p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'> <o:p></o:p></p><div><div><p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'>On Fri, Oct 4, 2019 at 12:26 PM Lelio Fulgenzi <<a href="mailto:lelio@uoguelph.ca" target="_blank">lelio@uoguelph.ca</a>> wrote:<o:p></o:p></p></div><blockquote style='border:none;border-left:solid #CCCCCC 1.0pt;padding:0in 0in 0in 6.0pt;margin-left:4.8pt;margin-top:5.0pt;margin-right:0in;margin-bottom:5.0pt'><div><div><p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'>Yeah – I’d want this to happen all within DNS. But of course, in a supported fashion. I’m not interested in spending time modifying infrastructure at this time.<o:p></o:p></p><p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'> <o:p></o:p></p><p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'>I’ve done some searching, and there’s talk of RR records, but we haven’t found much documentation.<o:p></o:p></p><p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'> <o:p></o:p></p><p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'> <o:p></o:p></p><p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><span style='font-family:"Arial",sans-serif'>---</span><o:p></o:p></p><p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><b><span style='font-family:"Arial",sans-serif'>Lelio Fulgenzi, B.A.</span></b><span style='font-family:"Arial",sans-serif'> | Senior Analyst</span><o:p></o:p></p><p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><span style='font-family:"Arial",sans-serif;color:#333333'>Computing and Communications Services</span><span style='font-family:"Arial",sans-serif'> | University of Guelph</span><o:p></o:p></p><p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><span style='font-family:"Arial",sans-serif'>Room 037 Animal Science & Nutrition Bldg | 50 Stone Rd E | Guelph, ON | N1G 2W1</span><o:p></o:p></p><p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><span style='font-family:"Arial",sans-serif'>519-824-4120 Ext. 56354 | <a href="mailto:lelio@uoguelph.ca" target="_blank"><span style='color:#0563C1'>lelio@uoguelph.ca</span></a></span><o:p></o:p></p><p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><span style='font-family:"Arial",sans-serif'> </span><o:p></o:p></p><p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><a href="https://nam12.safelinks.protection.outlook.com/?url=http%3A%2F%2Fwww.uoguelph.ca%2Fccs&data=02%7C01%7C%7C4df4b81e7de446bcd2fa08d749410008%7C84df9e7fe9f640afb435aaaaaaaaaaaa%7C1%7C0%7C637058415823475701&sdata=DdBdytu3ONg9rnh6m4f7%2B7l88QEl%2BxPdIX6vpivkehY%3D&reserved=0" target="_blank"><span style='font-family:"Arial",sans-serif'>www.uoguelph.ca/ccs</span></a><span style='font-family:"Arial",sans-serif;color:#1F497D'> | @UofGCCS on Instagram, Twitter and Facebook</span><o:p></o:p></p><p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><span style='font-family:"Arial",sans-serif'> </span><o:p></o:p></p><div><p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><image001.png><o:p></o:p></p></div><p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'> <o:p></o:p></p><p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><b>From:</b> Dave Goodwin <<a href="mailto:dave.goodwin@december.net" target="_blank">dave.goodwin@december.net</a>> <br><b>Sent:</b> Friday, October 4, 2019 12:09 PM<br><b>To:</b> Lelio Fulgenzi <<a href="mailto:lelio@uoguelph.ca" target="_blank">lelio@uoguelph.ca</a>><br><b>Cc:</b> cisco-voip voyp list <<a href="mailto:cisco-voip@puck.nether.net" target="_blank">cisco-voip@puck.nether.net</a>><br><b>Subject:</b> Re: [cisco-voip] SIP Domain substitution<o:p></o:p></p><p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'> <o:p></o:p></p><div><div><p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><span style='font-family:"Tahoma",sans-serif'>Are you wanting this to all happen within DNS instead of happening within a SIP UA? As far as I understand, if DNS redirected somewhere (SRV or CNAME record for example) it would not change the destination URI the originator is trying to reach. The SIP protocol has redirection codes (such as 301 or 302) but whether or how you might be able to use them depends on the SIP UAs being used.</span><o:p></o:p></p></div><div><p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><span style='font-family:"Tahoma",sans-serif'> </span><o:p></o:p></p></div><div><p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><span style='font-family:"Tahoma",sans-serif'>You might also be able to use something like a SIP normalization script (CUCM), SIP profiles (CUBE), or maybe search pattern replacements (Expressway) to just translate the domain as calls flow in/out. I'm guessing what might be feasible without knowing more of the picture.</span><o:p></o:p></p></div></div><p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'> <o:p></o:p></p><div><div><p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'>On Fri, Oct 4, 2019 at 11:10 AM Lelio Fulgenzi <<a href="mailto:lelio@uoguelph.ca" target="_blank">lelio@uoguelph.ca</a>> wrote:<o:p></o:p></p></div><blockquote style='border:none;border-left:solid #CCCCCC 1.0pt;padding:0in 0in 0in 6.0pt;margin-left:4.8pt;margin-top:5.0pt;margin-right:0in;margin-bottom:5.0pt'><div><div><p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'> <o:p></o:p></p></div><p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'>Does SIP allow for domain name substitution? <o:p></o:p></p><div><p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'> <o:p></o:p></p></div><div><p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'>By this I mean, instead of advertising or dialing <a href="mailto:coyote@phones.america.acmemanufacturing.com" target="_blank">coyote@phones.america.acmemanufacturing.com</a> I want to use <a href="mailto:coyote@zing.com" target="_blank">coyote@zing.com</a><o:p></o:p></p></div><div><p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'> <o:p></o:p></p></div><div><p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'>But I don’t want to have to reorganize and reprogram anything. <o:p></o:p></p></div><div><p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'> <o:p></o:p></p></div><div><p class=MsoNormal style='mso-margin-top-alt:auto;margin-bottom:12.0pt'>I just want the DNS to say, “hey, use this domain instead and try again.”<o:p></o:p></p><div id="gmail-m_-6710398964179065644gmail-m_-5108083527376758525gmail-m_-7733743004462058063gmail-m_-9160086299379446812AppleMailSignature"><p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><i>-sent from mobile device-</i><o:p></o:p></p><p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'> <o:p></o:p></p><p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><b>Lelio Fulgenzi, B.A.</b> | Senior Analyst<o:p></o:p></p><p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'>Computing and Communications Services | University of Guelph<o:p></o:p></p><p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'>Room 037 Animal Science & Nutrition Bldg | 50 Stone Rd E | Guelph, ON | N1G 2W1<o:p></o:p></p><p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><span style='color:black'><a href="tel:519-824-4120;56354" target="_blank">519-824-4120 Ext. 56354</a> | <a href="mailto:lelio@uoguelph.ca" target="_blank">lelio@uoguelph.ca</a></span><o:p></o:p></p><p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'> <o:p></o:p></p><p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><span style='color:black'><a href="https://nam12.safelinks.protection.outlook.com/?url=http%3A%2F%2Fwww.uoguelph.ca%2Fccs&data=02%7C01%7C%7C4df4b81e7de446bcd2fa08d749410008%7C84df9e7fe9f640afb435aaaaaaaaaaaa%7C1%7C0%7C637058415823475701&sdata=DdBdytu3ONg9rnh6m4f7%2B7l88QEl%2BxPdIX6vpivkehY%3D&reserved=0" target="_blank">www.uoguelph.ca/ccs</a> | @UofGCCS on Instagram, Twitter and Facebook</span><o:p></o:p></p><p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'> <o:p></o:p></p></div></div></div><p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'>_______________________________________________<br>cisco-voip mailing list<br><a href="mailto:cisco-voip@puck.nether.net" 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