Tim - this is what we are doing: Internal DNS (DNS/DHCP is entirely Microsoft based) and separate from our external DNS server Internally:
1) Created a sipx.garrettcounty.org entry in DNS that resolves to sipx internally (192.168.x.x) 2) Created SRV records internally for garrettcounty.org -> these point to sipx.garrettcounty.org Externally (We host our own DNS records - but internal users do not use this for DNS resolution) -will be the same if your ISP hosts your DNS: 1) Created a sipx.garrettcounty.org entry in DNS that resolves to our external IP address (the internet) 2) Created SRV records externally that point to sipx.garrettcounty.org I believe they call this 'split DNS' - the nice thing about this - you can take a phone that is at your desk and plug it in for a remote worker...if you've done everything correctly, it will just work... The ports have nothing to do with DNS entries -5060/5080/30,000-31,000 are just rules that need added on your firewall to allow traffic into the sipXecs server. From: [email protected] [mailto:[email protected]] On Behalf Of Tim Byng Sent: Wednesday, July 21, 2010 12:23 PM To: Michael Scheidell Cc: [email protected] Subject: Re: [sipx-users] Inbound SIP URI Dialing On Tue, Jul 20, 2010 at 2:37 PM, Michael Scheidell <[email protected]<mailto:[email protected]>> wrote: yes, this is as expected, a SRV call to myitsp.com<http://myitsp.com> includes the pointer to sip.myitsp.com<http://sip.myitsp.com> and port 5080. Obviously I'm not grasping this concept very well, so I thought I'd take a look at some of the new documentation that's currently being added. I found an excellent document called "DNS Concepts for sipXecs" located here: http://wiki.sipfoundry.org/display/xecsuser/DNS+Concepts+for+sipXecs Scenario 1 fits matches my environment very closely. It mentions three potential problems with this scenario, one of which is "Users outside of your organization can not call your system via a SIP URL (sip:[email protected]<mailto:sip%[email protected]>)". It also mentions that there is a workaround, but I could not find any info about this (maybe it hasn't been added yet). This document gives examples on how to set up external DNS SRV records, but I don't see any mention about port 5080. At this point, I'm just trying to grasp the concept on how this works. Can someone help me understand this a little better? Thanks, Tim ________________________________ This message and any files transmitted with it are intended only for the individual(s) or entity named. If you are not the intended individual(s) or entity named you are hereby notified that any disclosure, copying, distribution or reliance upon its contents is strictly prohibited. If you have received this in error, please notify the sender, delete the original, and destroy all copies. Email transmissions cannot be guaranteed to be secure or error-free as information could be intercepted, corrupted, lost, destroyed, arrive late or incomplete, or contain viruses. Garrett County Government therefore does not accept any liability for any errors or omissions in the contents of this message, which arise as a result of email transmission. Garrett County Government, 203 South Fourth Street, Courthouse, Oakland, Maryland 21550 www.garrettcounty.org
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