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List: cisco-voip
Subject: Re: [cisco-voip] SIP Domain substitution
From: "Pawlowski, Adam" <ajp26 () buffalo ! edu>
Date: 2019-10-07 12:08:19
Message-ID: 0552ca8b2cf94ae88b4e153672d81d42 () MBX-NR2 ! itorg ! ad ! buffalo ! edu
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I am a glutton for punishment, so for our PoC deployment we have a hybrid connector \
cluster, and a B2B/MRA cluster that does everything else.
We have no non-numeric URIs, so I use CPL rules (going to move that to XML since \
managing them otherwise is not great) to accept calls formatted to my "collaboration \
endpoints" (ce-…) and customer URIs which all start with a letter. Calls targeted \
directly at the expressway, elsewise to the domains, or E164 calls with no domain are \
all dropped.
The Expressway doesn't accept in anything that would be directly routable once it \
hits the UCM to try and avoid this problem.
While it is certainly possible I suppose to have an authenticated zone that can place \
dialable calls out via UCM, CUBE, SBC, etc that seems like not the best idea, but \
impossible as a Webex endpoint won't get you there.
Out of the ~1000 calls in the Expressway E cluster's history, spanning about the last \
two hours, 4 of them were legit from MRA clients and the rest were spam so I would \
not want to leave any opportunity there either.
From: cisco-voip <cisco-voip-bounces@puck.nether.net> On Behalf Of Lelio Fulgenzi
Sent: Saturday, October 5, 2019 10:13 AM
To: Ryan Huff <ryanhuff@outlook.com>
Cc: cisco-voip voyp list <cisco-voip@puck.nether.net>
Subject: Re: [cisco-voip] SIP Domain substitution
Yeah. I hear ya. I'll have to do more research. To see how much effort is actually \
required.
My biggest concern is enabling PSTN access and not opening up a security exposure.
I was at the collab techtorial where the presenter put the fear of Dog into us about \
spinning up a separate expressway cluster to ensure no pstn abuse.
I'll try with Macros first. If I can get extension dialing easy enough, it buys me s \
proof of concept that can get me more support.
-sent from mobile device-
Lelio Fulgenzi, B.A. | Senior Analyst
Computing and Communications Services | University of Guelph
Room 037 Animal Science & Nutrition Bldg | 50 Stone Rd E | Guelph, ON | N1G \
2W1<x-apple-data-detectors://1/0> 519-824-4120 Ext. 56354<tel:519-824-4120;56354> | \
lelio@uoguelph.ca<mailto:lelio@uoguelph.ca>
www.uoguelph.ca/ccs<http://www.uoguelph.ca/ccs> | @UofGCCS on Instagram, Twitter and \
Facebook
[University of Guelph Cornerstone with Improve Life tagline]
On Oct 5, 2019, at 9:36 AM, Ryan Huff \
<ryanhuff@outlook.com<mailto:ryanhuff@outlook.com>> wrote: Webex Hybrid Calling \
definitely sounds like a good fit for you then; it'll also give your cloud registered \
devices a way to dial the on-prem extensions.
Basically, when the cloud registered device is setup, you select Hybrid calling as \
the PSTN service (assuming Hybrid calling has already been setup) and then it sends \
signaling to CUCM via Expressway-C > CUCM. The effective media path is device <> \
cloud.
If you have Expressway B2B, you can also leverage that to allow your cloud devices to \
make B2B SIP calls via Cloud > Expressway-C > CUCM > Expressway-C > Expressway-E > \
Internet. The idea was to make Hybrid Calling for cloud devices "transparent" to the \
user over cloud calling in terms of PSTN capabilities, with the added feature of \
interacting with on-prem extensions as if the device was registered on-prem.
There are more than a few scenarios where Webex Hybrid calling will trombone the \
call, and it's by design and due to the nature of the scenario. Under the hood, the \
call legs and SIP messages can get hairy from a troubleshooting perspective \
(TranslatorX is a beast for this), and Cisco has had more than a few complaints about \
it, but it is what it is. Sent from my iPhone
On Oct 4, 2019, at 23:40, Lelio Fulgenzi \
<lelio@uoguelph.ca<mailto:lelio@uoguelph.ca>> wrote:
I'm trying to do a bit of everything, really.
In our case, I'd like to have a few cloud registered WebEx room devices still be able \
to call our extensions. It's the one thing we loose vs. on-prem reg WebEx room \
devices.
I still have to get it working (I'm guessing there are IP address ranges I have to \
permit) but a cloud registered device can call <ext>@myphone.acme.com
If I can create a macro on cloud registered devices like you can on CE devices, then \
it gives me that functionality.
We don't have Webex Teams deployed. We don't have Webex pstn / calling enabled.
So it's either a hybrid call setup or a macro.
I'll have to investigate further.
-sent from mobile device-
Lelio Fulgenzi, B.A. | Senior Analyst
Computing and Communications Services | University of Guelph
Room 037 Animal Science & Nutrition Bldg | 50 Stone Rd E | Guelph, ON | N1G \
2W1<x-apple-data-detectors://1/0> 519-824-4120 Ext. 56354<tel:519-824-4120;56354> | \
lelio@uoguelph.ca<mailto:lelio@uoguelph.ca>
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| @UofGCCS on Instagram, Twitter and Facebook
[University of Guelph Cornerstone with Improve Life tagline]
On Oct 4, 2019, at 11:25 PM, Anthony Holloway \
<avholloway+cisco-voip@gmail.com<mailto:avholloway+cisco-voip@gmail.com>> wrote: \
Wait, I thought this was for other businesses to call you. Are you saying that to \
call within your own cloud you have to dial that giant URI? Is there no directory, \
or extension dialing? Clearly, I have not done a single Webex calling deployment \
yet.
On Fri, Oct 4, 2019 at 10:06 PM Lelio Fulgenzi \
<lelio@uoguelph.ca<mailto:lelio@uoguelph.ca>> wrote:
Ok. Looking at it from the other way around, could I create a macro(?) on the cloud \
registered devices that ask for a 5 digit extension and then add the appropriate SIP \
domain to the extension to place the call?
-sent from mobile device-
Lelio Fulgenzi, B.A. | Senior Analyst
Computing and Communications Services | University of Guelph
Room 037 Animal Science & Nutrition Bldg | 50 Stone Rd E | Guelph, ON | N1G 2W1
519-824-4120 Ext. 56354<tel:519-824-4120;56354> | \
lelio@uoguelph.ca<mailto:lelio@uoguelph.ca>
www.uoguelph.ca/ccs<https://eur03.safelinks.protection.outlook.com/?url=http%3A%2F%2Fw \
ww.uoguelph.ca%2Fccs&data=02%7C01%7C%7Cb16503f6614e48ab04dc08d74945d472%7C84df9e7fe9f6 \
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| @UofGCCS on Instagram, Twitter and Facebook
[University of Guelph Cornerstone with Improve Life tagline]
On Oct 4, 2019, at 10:32 PM, Ryan Huff \
<ryanhuff@outlook.com<mailto:ryanhuff@outlook.com>> wrote: 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.
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.
It's a little bit of an ugly trombone, but it does work..
Sent from my iPhone
On Oct 4, 2019, at 22:09, Lelio Fulgenzi \
<lelio@uoguelph.ca<mailto:lelio@uoguelph.ca>> wrote:
Darn. Double darn.
Let's hope webex offers up custom domain registration for devices soon.
‘Cause room123@acme.rooms.webex.com<mailto:room123@acme.rooms.webex.com> is a bit \
much.
-sent from mobile device-
Lelio Fulgenzi, B.A. | Senior Analyst
Computing and Communications Services | University of Guelph
Room 037 Animal Science & Nutrition Bldg | 50 Stone Rd E | Guelph, ON | N1G 2W1
519-824-4120 Ext. 56354<tel:519-824-4120;56354> | \
lelio@uoguelph.ca<mailto:lelio@uoguelph.ca>
www.uoguelph.ca/ccs<https://eur03.safelinks.protection.outlook.com/?url=http%3A%2F%2Fw \
ww.uoguelph.ca%2Fccs&data=02%7C01%7C%7Cb16503f6614e48ab04dc08d74945d472%7C84df9e7fe9f6 \
40afb435aaaaaaaaaaaa%7C1%7C0%7C637058436587244485&sdata=up%2BFCTMM56ltoeiCLOkkoDz%2BjVc8Tpe6Z9kkqE7rUPs%3D&reserved=0> \
| @UofGCCS on Instagram, Twitter and Facebook
[University of Guelph Cornerstone with Improve Life tagline]
On Oct 4, 2019, at 9:05 PM, Ryan Huff \
<ryanhuff@outlook.com<mailto:ryanhuff@outlook.com>> wrote: 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.
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.
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).
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. Sent from my iPhone
On Oct 4, 2019, at 20:40, Lelio Fulgenzi \
<lelio@uoguelph.ca<mailto:lelio@uoguelph.ca>> wrote:
I've seen some references to Cisco SIP proxy server.
Would that help?
-sent from mobile device-
Lelio Fulgenzi, B.A. | Senior Analyst
Computing and Communications Services | University of Guelph
Room 037 Animal Science & Nutrition Bldg | 50 Stone Rd E | Guelph, ON | N1G 2W1
519-824-4120 Ext. 56354<tel:519-824-4120;56354> | \
lelio@uoguelph.ca<mailto:lelio@uoguelph.ca>
www.uoguelph.ca/ccs<https://eur03.safelinks.protection.outlook.com/?url=http%3A%2F%2Fw \
ww.uoguelph.ca%2Fccs&data=02%7C01%7C%7Cb16503f6614e48ab04dc08d74945d472%7C84df9e7fe9f6 \
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| @UofGCCS on Instagram, Twitter and Facebook
[University of Guelph Cornerstone with Improve Life tagline]
On Oct 4, 2019, at 7:46 PM, Ryan Huff \
<ryanhuff@outlook.com<mailto:ryanhuff@outlook.com>> wrote: According to RFC 2782 \
(https://www.ietf.org/rfc/rfc2782.txt<https://eur03.safelinks.protection.outlook.com/? \
url=https%3A%2F%2Fwww.ietf.org%2Frfc%2Frfc2782.txt&data=02%7C01%7C%7Cb16503f6614e48ab0 \
4dc08d74945d472%7C84df9e7fe9f640afb435aaaaaaaaaaaa%7C1%7C0%7C637058436587264501&sdata=T5gNO4TAfOEFXaKUKLBLleyj1GtmxSXVzc2BAMbXC5E%3D&reserved=0>), \
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".
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.
Sent from my iPhone
On Oct 4, 2019, at 19:10, Brian Meade <bmeade90@vt.edu<mailto:bmeade90@vt.edu>> \
wrote:
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.
On Fri, Oct 4, 2019 at 12:26 PM Lelio Fulgenzi \
<lelio@uoguelph.ca<mailto:lelio@uoguelph.ca>> wrote: 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.
I've done some searching, and there's talk of RR records, but we haven't found much \
documentation.
---
Lelio Fulgenzi, B.A. | Senior Analyst
Computing and Communications Services | University of Guelph
Room 037 Animal Science & Nutrition Bldg | 50 Stone Rd E | Guelph, ON | N1G 2W1
519-824-4120 Ext. 56354 | lelio@uoguelph.ca<mailto:lelio@uoguelph.ca>
www.uoguelph.ca/ccs<https://eur03.safelinks.protection.outlook.com/?url=http%3A%2F%2Fw \
ww.uoguelph.ca%2Fccs&data=02%7C01%7C%7Cb16503f6614e48ab04dc08d74945d472%7C84df9e7fe9f6 \
40afb435aaaaaaaaaaaa%7C1%7C0%7C637058436587274512&sdata=ls8WyWXgtfKDMoC3gIKyHoq07iuEP4VbDlQLnweBKJQ%3D&reserved=0> \
| @UofGCCS on Instagram, Twitter and Facebook
<image001.png>
From: Dave Goodwin <dave.goodwin@december.net<mailto:dave.goodwin@december.net>>
Sent: Friday, October 4, 2019 12:09 PM
To: Lelio Fulgenzi <lelio@uoguelph.ca<mailto:lelio@uoguelph.ca>>
Cc: cisco-voip voyp list \
<cisco-voip@puck.nether.net<mailto:cisco-voip@puck.nether.net>>
Subject: Re: [cisco-voip] SIP Domain substitution
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.
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.
On Fri, Oct 4, 2019 at 11:10 AM Lelio Fulgenzi \
<lelio@uoguelph.ca<mailto:lelio@uoguelph.ca>> wrote:
Does SIP allow for domain name substitution?
By this I mean, instead of advertising or dialing \
coyote@phones.america.acmemanufacturing.com<mailto:coyote@phones.america.acmemanufacturing.com> \
I want to use coyote@zing.com<mailto:coyote@zing.com>
But I don't want to have to reorganize and reprogram anything.
I just want the DNS to say, "hey, use this domain instead and try again."
-sent from mobile device-
Lelio Fulgenzi, B.A. | Senior Analyst
Computing and Communications Services | University of Guelph
Room 037 Animal Science & Nutrition Bldg | 50 Stone Rd E | Guelph, ON | N1G 2W1
519-824-4120 Ext. 56354<tel:519-824-4120;56354> | \
lelio@uoguelph.ca<mailto:lelio@uoguelph.ca>
www.uoguelph.ca/ccs<https://eur03.safelinks.protection.outlook.com/?url=http%3A%2F%2Fw \
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<p class="MsoNormal"><span \
style="font-size:11.0pt;font-family:"Calibri",sans-serif;color:#1F497D">I \
am a glutton for punishment, so for our PoC deployment we have a hybrid connector \
cluster, and a B2B/MRA cluster that does everything else.<o:p></o:p></span></p> <p \
class="MsoNormal"><span \
style="font-size:11.0pt;font-family:"Calibri",sans-serif;color:#1F497D"><o:p> </o:p></span></p>
<p class="MsoNormal"><span \
style="font-size:11.0pt;font-family:"Calibri",sans-serif;color:#1F497D">We \
have no non-numeric URIs, so I use CPL rules (going to move that to XML since \
managing them otherwise is not great) to accept calls formatted to my "collaboration \
endpoints" (ce-…) and customer URIs which all start with a letter. Calls targeted \
directly at the expressway, elsewise to the domains, or E164 calls with no domain are \
all dropped.<o:p></o:p></span></p> <p class="MsoNormal"><span \
style="font-size:11.0pt;font-family:"Calibri",sans-serif;color:#1F497D"><o:p> </o:p></span></p>
<p class="MsoNormal"><span \
style="font-size:11.0pt;font-family:"Calibri",sans-serif;color:#1F497D">The \
Expressway doesn't accept in anything that would be directly routable once it hits \
the UCM to try and avoid this problem. <o:p></o:p></span></p>
<p class="MsoNormal"><span \
style="font-size:11.0pt;font-family:"Calibri",sans-serif;color:#1F497D"><o:p> </o:p></span></p>
<p class="MsoNormal"><span \
style="font-size:11.0pt;font-family:"Calibri",sans-serif;color:#1F497D">While \
it is certainly possible I suppose to have an authenticated zone that can place \
dialable calls out via UCM, CUBE, SBC, etc that seems like not the best idea, but \
impossible as a Webex endpoint won't get you there.<o:p></o:p></span></p> <p \
class="MsoNormal"><span \
style="font-size:11.0pt;font-family:"Calibri",sans-serif;color:#1F497D"><o:p> </o:p></span></p>
<p class="MsoNormal"><span \
style="font-size:11.0pt;font-family:"Calibri",sans-serif;color:#1F497D">Out \
of the ~1000 calls in the Expressway E cluster's history, spanning about the last two \
hours, 4 of them were legit from MRA clients and the rest were spam so I would not \
want to leave any opportunity there either.<o:p></o:p></span></p> <p \
class="MsoNormal"><span \
style="font-size:11.0pt;font-family:"Calibri",sans-serif;color:#1F497D"><o:p> </o:p></span></p>
<p class="MsoNormal"><span \
style="font-size:11.0pt;font-family:"Calibri",sans-serif;color:#1F497D"><o:p> </o:p></span></p>
<div style="border:none;border-left:solid blue 1.5pt;padding:0in 0in 0in 4.0pt">
<div>
<div style="border:none;border-top:solid #E1E1E1 1.0pt;padding:3.0pt 0in 0in 0in">
<p class="MsoNormal"><b><span \
style="font-size:11.0pt;font-family:"Calibri",sans-serif">From:</span></b><span \
style="font-size:11.0pt;font-family:"Calibri",sans-serif"> cisco-voip \
<cisco-voip-bounces@puck.nether.net> <b>On Behalf Of </b>Lelio Fulgenzi<br>
<b>Sent:</b> Saturday, October 5, 2019 10:13 AM<br>
<b>To:</b> Ryan Huff <ryanhuff@outlook.com><br>
<b>Cc:</b> cisco-voip voyp list <cisco-voip@puck.nether.net><br>
<b>Subject:</b> Re: [cisco-voip] SIP Domain substitution<o:p></o:p></span></p>
</div>
</div>
<p class="MsoNormal"><o:p> </o:p></p>
<div>
<p class="MsoNormal"><o:p> </o:p></p>
</div>
<p class="MsoNormal">Yeah. I hear ya. I'll have to do more research. To see how much \
effort is actually required. <o:p></o:p></p>
<div>
<p class="MsoNormal"><o:p> </o:p></p>
</div>
<div>
<p class="MsoNormal">My biggest concern is enabling PSTN access and not opening up a \
security exposure. <o:p></o:p></p> </div>
<div>
<p class="MsoNormal"><o:p> </o:p></p>
</div>
<div>
<p class="MsoNormal">I was at the collab techtorial where the presenter put the fear \
of Dog into us about spinning up a separate expressway cluster to ensure no pstn \
abuse. <o:p></o:p></p> </div>
<div>
<p class="MsoNormal"><o:p> </o:p></p>
</div>
<div>
<p class="MsoNormal" style="margin-bottom:12.0pt">I'll try with Macros first. If I \
can get extension dialing easy enough, it buys me s proof of concept that can get me \
more support. <o:p></o:p></p> <div id="AppleMailSignature">
<p class="MsoNormal"><i>-sent from mobile device-</i><o:p></o:p></p>
<p class="MsoNormal"><b><br>
<br>
</b><o:p></o:p></p>
<p class="MsoNormal"><b>Lelio Fulgenzi, B.A.</b> | Senior Analyst<o:p></o:p></p>
<p class="MsoNormal">Computing and Communications Services | University of \
Guelph<o:p></o:p></p> <p class="MsoNormal">Room 037 Animal Science & Nutrition \
Bldg | <a href="x-apple-data-detectors://1/0">50 Stone Rd E | Guelph, ON | N1G \
2W1</a><o:p></o:p></p> <p class="MsoNormal"><span style="color:black"><a \
href="tel:519-824-4120;56354">519-824-4120 Ext. 56354</a> | <a \
href="mailto:lelio@uoguelph.ca">lelio@uoguelph.ca</a></span><o:p></o:p></p> <p \
class="MsoNormal"> <o:p></o:p></p> <p class="MsoNormal"><span \
style="color:black"><a \
href="http://www.uoguelph.ca/ccs">www.uoguelph.ca/ccs</a> | @UofGCCS on \
Instagram, Twitter and Facebook</span><o:p></o:p></p> <p \
class="MsoNormal"> <o:p></o:p></p> <p class="MsoNormal"><img border="0" \
width="187" height="100" style="width:1.9479in;height:1.0416in" id="Picture_x0020_1" \
src="cid:image001.png@01D3DD7E.EC708050" alt="University of Guelph Cornerstone with \
Improve Life tagline"><o:p></o:p></p> </div>
<div>
<p class="MsoNormal" style="margin-bottom:12.0pt"><br>
On Oct 5, 2019, at 9:36 AM, Ryan Huff <<a \
href="mailto:ryanhuff@outlook.com">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">Webex Hybrid Calling definitely sounds like a good fit for you \
then; it'll also give your cloud registered devices a way to dial the on-prem \
extensions. <o:p></o:p></p>
<div>
<p class="MsoNormal"><o:p> </o:p></p>
</div>
<div>
<p class="MsoNormal">Basically, when the cloud registered device is setup, you select \
Hybrid calling as the PSTN service (assuming Hybrid calling has already been setup) \
and then it sends signaling to CUCM via Expressway-C > CUCM. The effective media \
path is device <> cloud. <o:p></o:p></p>
</div>
<div>
<p class="MsoNormal"><o:p> </o:p></p>
</div>
<div>
<p class="MsoNormal">If you have Expressway B2B, you can also leverage that to allow \
your cloud devices to make B2B SIP calls via Cloud > Expressway-C > CUCM > \
Expressway-C > Expressway-E > Internet. The idea was to make Hybrid Calling for \
cloud devices "transparent" to the user over cloud calling in terms of PSTN \
capabilities, with the added feature of interacting with on-prem extensions as if the \
device was registered on-prem.<o:p></o:p></p> </div>
<div>
<div>
<p class="MsoNormal"><o:p> </o:p></p>
</div>
<div>
<p class="MsoNormal" style="margin-bottom:12.0pt">There are more than a few scenarios \
where Webex Hybrid calling will trombone the call, and it's by design and due to the \
nature of the scenario. Under the hood, the call legs and SIP messages can get hairy \
from a troubleshooting perspective (TranslatorX is a beast for this), and Cisco has \
had more than a few complaints about it, but it is what it is.<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 23:40, Lelio \
Fulgenzi <<a href="mailto:lelio@uoguelph.ca">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"><span \
style="font-family:"Tahoma",sans-serif"></span> <o:p> </o:p></p>
<div>
<p class="MsoNormal"><o:p> </o:p></p>
</div>
<p class="MsoNormal">I'm trying to do a bit of everything, really. \
<o:p></o:p></p> <div>
<p class="MsoNormal"><o:p> </o:p></p>
</div>
<div>
<p class="MsoNormal">In our case, I'd like to have a few cloud registered WebEx room \
devices still be able to call our extensions. It's the one thing we loose vs. on-prem \
reg WebEx room devices. <o:p></o:p></p> </div>
<div>
<p class="MsoNormal"><o:p> </o:p></p>
</div>
<div>
<p class="MsoNormal">I still have to get it working (I'm guessing there are IP \
address ranges I have to permit) but a cloud registered device can call \
<ext>@myphone.acme.com<o:p></o:p></p> </div>
<div>
<p class="MsoNormal"><o:p> </o:p></p>
</div>
<div>
<p class="MsoNormal">If I can create a macro on cloud registered devices like you can \
on CE devices, then it gives me that functionality. <o:p></o:p></p> </div>
<div>
<p class="MsoNormal"><o:p> </o:p></p>
</div>
<div>
<p class="MsoNormal">We don't have Webex Teams deployed. We don't have Webex pstn / \
calling enabled. <o:p></o:p></p> </div>
<div>
<p class="MsoNormal"><o:p> </o:p></p>
</div>
<div>
<p class="MsoNormal">So it's either a hybrid call setup or a \
macro. <o:p></o:p></p> </div>
<div>
<p class="MsoNormal"><o:p> </o:p></p>
</div>
<div>
<p class="MsoNormal" style="margin-bottom:12.0pt">I'll have to investigate \
further. <o:p></o:p></p> <div id="AppleMailSignature">
<p class="MsoNormal"><i>-sent from mobile device-</i><o:p></o:p></p>
<p class="MsoNormal"><b><br>
<br>
</b><o:p></o:p></p>
<p class="MsoNormal"><b>Lelio Fulgenzi, B.A.</b> | Senior Analyst<o:p></o:p></p>
<p class="MsoNormal">Computing and Communications Services | University of \
Guelph<o:p></o:p></p> <p class="MsoNormal">Room 037 Animal Science & Nutrition \
Bldg | <a href="x-apple-data-detectors://1/0">50 Stone Rd E | Guelph, ON | N1G \
2W1</a><o:p></o:p></p> <p class="MsoNormal"><span style="color:black"><a \
href="tel:519-824-4120;56354">519-824-4120 Ext. 56354</a> | <a \
href="mailto:lelio@uoguelph.ca">lelio@uoguelph.ca</a></span><o:p></o:p></p> <p \
class="MsoNormal"> <o:p></o:p></p> <p class="MsoNormal"><span \
style="color:black"><a \
href="https://eur03.safelinks.protection.outlook.com/?url=http%3A%2F%2Fwww.uoguelph.ca \
%2Fccs&data=02%7C01%7C%7Cb16503f6614e48ab04dc08d74945d472%7C84df9e7fe9f640afb435aa \
aaaaaaaaaa%7C1%7C0%7C637058436587224475&sdata=K8Hkz7W%2F3ijLyQTh0Nc6ZgnMbiXTurUDovMLe%2FjqT6k%3D&reserved=0">www.uoguelph.ca/ccs</a> |
@UofGCCS on Instagram, Twitter and Facebook</span><o:p></o:p></p>
<p class="MsoNormal"> <o:p></o:p></p>
<p class="MsoNormal"><img border="0" width="187" height="100" \
style="width:1.9479in;height:1.0416in" id="_x0000_i1026" \
src="cid:image001.png@01D3DD7E.EC708050" alt="University of Guelph Cornerstone with \
Improve Life tagline"><o:p></o:p></p> </div>
<div>
<p class="MsoNormal" style="margin-bottom:12.0pt"><br>
On Oct 4, 2019, at 11:25 PM, Anthony Holloway <<a \
href="mailto:avholloway+cisco-voip@gmail.com">avholloway+cisco-voip@gmail.com</a>> \
wrote:<o:p></o:p></p> </div>
<blockquote style="margin-top:5.0pt;margin-bottom:5.0pt">
<div>
<div>
<p class="MsoNormal">Wait, I thought this was for other businesses to call you. \
Are you saying that to call within your own cloud you have to dial that giant \
URI? Is there no directory, or extension dialing? Clearly, I have not \
done a single Webex calling deployment yet.<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 10:06 PM Lelio Fulgenzi <<a \
href="mailto:lelio@uoguelph.ca">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-right:0in"> <div>
<div>
<p class="MsoNormal"><o:p> </o:p></p>
</div>
<p class="MsoNormal" style="margin-bottom:12.0pt">Ok. Looking at it from the other \
way around, could I create a macro(?) on the cloud registered devices that ask for a \
5 digit extension and then add the appropriate SIP domain to the extension to place \
the call?<o:p></o:p></p> <div id="gmail-m_-6836782251036819310AppleMailSignature">
<p class="MsoNormal"><i>-sent from mobile device-</i><o:p></o:p></p>
<p class="MsoNormal"><b><br>
<br>
</b><o:p></o:p></p>
<p class="MsoNormal"><b>Lelio Fulgenzi, B.A.</b> | Senior Analyst<o:p></o:p></p>
<p class="MsoNormal">Computing and Communications Services | University of \
Guelph<o:p></o:p></p> <p class="MsoNormal">Room 037 Animal Science & Nutrition \
Bldg | 50 Stone Rd E | Guelph, ON | N1G 2W1<o:p></o:p></p> <p \
class="MsoNormal"><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"> <o:p></o:p></p> <p class="MsoNormal"><span \
style="color:black"><a \
href="https://eur03.safelinks.protection.outlook.com/?url=http%3A%2F%2Fwww.uoguelph.ca \
%2Fccs&data=02%7C01%7C%7Cb16503f6614e48ab04dc08d74945d472%7C84df9e7fe9f640afb435aa \
aaaaaaaaaa%7C1%7C0%7C637058436587234480&sdata=hP1iUi1T8p7kIR8cnYIG6z3JKod80gGGYp47f1seNCA%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"> <o:p></o:p></p>
<p class="MsoNormal"><img border="0" width="187" height="100" \
style="width:1.9479in;height:1.0416in" \
id="gmail-m_-6836782251036819310Picture_x0020_1" src="cid:" alt="University of Guelph \
Cornerstone with Improve Life tagline"><o:p></o:p></p> </div>
<div>
<p class="MsoNormal" style="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">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"><o:p> </o:p></p>
</div>
<div>
<p class="MsoNormal">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"><o:p> </o:p></p>
</div>
<div>
<p class="MsoNormal">It's a little bit of an ugly trombone, but it does \
work..<o:p></o:p></p> <div>
<p class="MsoNormal"><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 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"><span \
style="font-family:"Tahoma",sans-serif"></span> <o:p> </o:p></p>
<div>
<p class="MsoNormal"><o:p> </o:p></p>
</div>
<p class="MsoNormal">Darn. Double darn. <o:p></o:p></p>
<div>
<p class="MsoNormal"><o:p> </o:p></p>
</div>
<div>
<p class="MsoNormal">Let's hope webex offers up custom domain registration for \
devices soon. <o:p></o:p></p> </div>
<div>
<p class="MsoNormal"><o:p> </o:p></p>
</div>
<div>
<p class="MsoNormal" style="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_-6836782251036819310AppleMailSignature"> <p class="MsoNormal"><i>-sent \
from mobile device-</i><o:p></o:p></p> <p class="MsoNormal"><b><br>
<br>
</b><o:p></o:p></p>
<p class="MsoNormal"><b>Lelio Fulgenzi, B.A.</b> | Senior Analyst<o:p></o:p></p>
<p class="MsoNormal">Computing and Communications Services | University of \
Guelph<o:p></o:p></p> <p class="MsoNormal">Room 037 Animal Science & Nutrition \
Bldg | 50 Stone Rd E | Guelph, ON | N1G 2W1<o:p></o:p></p> <p \
class="MsoNormal"><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"> <o:p></o:p></p> <p class="MsoNormal"><span \
style="color:black"><a \
href="https://eur03.safelinks.protection.outlook.com/?url=http%3A%2F%2Fwww.uoguelph.ca \
%2Fccs&data=02%7C01%7C%7Cb16503f6614e48ab04dc08d74945d472%7C84df9e7fe9f640afb435aa \
aaaaaaaaaa%7C1%7C0%7C637058436587244485&sdata=up%2BFCTMM56ltoeiCLOkkoDz%2BjVc8Tpe6Z9kkqE7rUPs%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"> <o:p></o:p></p>
<p class="MsoNormal"><img border="0" width="187" height="100" \
style="width:1.9479in;height:1.0416in" id="_x0000_i1028" src="cid:" alt="University \
of Guelph Cornerstone with Improve Life tagline"><o:p></o:p></p> </div>
<div>
<p class="MsoNormal" style="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">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"><o:p> </o:p></p>
</div>
<div>
<p class="MsoNormal">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"><o:p> </o:p></p>
</div>
<div>
<p class="MsoNormal">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"><o:p> </o:p></p>
</div>
<div>
<p class="MsoNormal" style="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">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 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"><span \
style="font-family:"Tahoma",sans-serif"></span> <o:p> </o:p></p>
<div>
<p class="MsoNormal"><o:p> </o:p></p>
</div>
<p class="MsoNormal">I've seen some references to Cisco SIP proxy server. \
<o:p></o:p></p> <div>
<p class="MsoNormal"><o:p> </o:p></p>
</div>
<div>
<p class="MsoNormal" style="margin-bottom:12.0pt">Would that help?<o:p></o:p></p>
<div id="gmail-m_-6836782251036819310AppleMailSignature">
<p class="MsoNormal"><i>-sent from mobile device-</i><o:p></o:p></p>
<p class="MsoNormal"><b><br>
<br>
</b><o:p></o:p></p>
<p class="MsoNormal"><b>Lelio Fulgenzi, B.A.</b> | Senior Analyst<o:p></o:p></p>
<p class="MsoNormal">Computing and Communications Services | University of \
Guelph<o:p></o:p></p> <p class="MsoNormal">Room 037 Animal Science & Nutrition \
Bldg | 50 Stone Rd E | Guelph, ON | N1G 2W1<o:p></o:p></p> <p \
class="MsoNormal"><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"> <o:p></o:p></p> <p class="MsoNormal"><span \
style="color:black"><a \
href="https://eur03.safelinks.protection.outlook.com/?url=http%3A%2F%2Fwww.uoguelph.ca \
%2Fccs&data=02%7C01%7C%7Cb16503f6614e48ab04dc08d74945d472%7C84df9e7fe9f640afb435aa \
aaaaaaaaaa%7C1%7C0%7C637058436587254496&sdata=%2BDWdd5Bj2baDh9yla7QDgc4Qiig1S6ki26u5adIEN7w%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"> <o:p></o:p></p>
<p class="MsoNormal"><img border="0" width="187" height="100" \
style="width:1.9479in;height:1.0416in" id="_x0000_i1029" src="cid:" alt="University \
of Guelph Cornerstone with Improve Life tagline"><o:p></o:p></p> </div>
<div>
<p class="MsoNormal" style="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">According to RFC 2782 (<a \
href="https://eur03.safelinks.protection.outlook.com/?url=https%3A%2F%2Fwww.ietf.org%2 \
Frfc%2Frfc2782.txt&data=02%7C01%7C%7Cb16503f6614e48ab04dc08d74945d472%7C84df9e7fe9 \
f640afb435aaaaaaaaaaaa%7C1%7C0%7C637058436587264501&sdata=T5gNO4TAfOEFXaKUKLBLleyj1GtmxSXVzc2BAMbXC5E%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"><o:p> </o:p></p>
</div>
<div>
<p class="MsoNormal">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"><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 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"><span \
style="font-family:"Tahoma",sans-serif"></span> <o:p> </o:p></p>
<div>
<p class="MsoNormal">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"><o:p> </o:p></p>
<div>
<div>
<p class="MsoNormal">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-right:0in"> <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://eur03.safelinks.protection.outlook.com/?url=http%3A%2F%2Fwww.uoguelph.ca \
%2Fccs&data=02%7C01%7C%7Cb16503f6614e48ab04dc08d74945d472%7C84df9e7fe9f640afb435aa \
aaaaaaaaaa%7C1%7C0%7C637058436587274512&sdata=ls8WyWXgtfKDMoC3gIKyHoq07iuEP4VbDlQLnweBKJQ%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"><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_-6836782251036819310gmail-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://eur03.safelinks.protection.outlook.com/?url=http%3A%2F%2Fwww.uoguelph.ca \
%2Fccs&data=02%7C01%7C%7Cb16503f6614e48ab04dc08d74945d472%7C84df9e7fe9f640afb435aa \
aaaaaaaaaa%7C1%7C0%7C637058436587284523&sdata=d7UxK0tYWLGKNshr7rcBEBv4XImcgWh%2BAzsfqTgMOPQ%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>
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