[2 days left] What’s wrong with your cloud strategy? Learn why multicloud solutions matter with Nimble Storage.Register Now


External Lync clients can't join meetings - get kicked out with "You have left the call"

Posted on 2014-01-26
Medium Priority
Last Modified: 2014-01-29
My users connecting remotely (ie. from home) from their Lync clients installed on their PC are unable to join any meetings.  It tries to connect, but then gives the status "You have left the call."

Internally (ie. in the office) it works fine. Additionally, the Lync Web App clients also works fine, internally and externally.

Some details on my enviroment:

Edge - Lync 2013

Front End Pools - one 2010 Enterprise (albeit one server), one 2013 Enterprise (two servers)

A standalone Lync 2010 A/V server exists as well.

Meet and dialup records internally point to 2010 pool. Externally, they point to 2013 access edge.

SRV records on external DNS are _sip._tls 443 and _sipfederationtls._tcp 5061, both point to access edge.

SRV records on internal DNS are _sipinternaltls._tcp 5061 to sip (which is an "A" record with IP for 2013 FE pool), and _sip._tls 5061 to access (which is an "A" record with the internal IP of the edge server).

Any thoughts on how to troubleshoot this would be most appreciated. Thanks.

Ron Piecyk
*****Email Removed - MIT 1-29-14****
Question by:ronpiecyk
Welcome to Experts Exchange

Add your voice to the tech community where 5M+ people just like you are talking about what matters.

  • Help others & share knowledge
  • Earn cash & points
  • Learn & ask questions
  • 3
  • 2
LVL 74

Expert Comment

by:Jeffrey Kane - TechSoEasy
ID: 39811197
Do you have a load balancer?

LVL 74

Expert Comment

by:Jeffrey Kane - TechSoEasy
ID: 39811210
Also, check out this forum post for troubleshooting steps:


Author Comment

ID: 39812341
Thanks Jeff. No load balancer, not using NAT - interfaces are directly on the internet (have public IPs assigned to them), firewall is Windows firewall and all required ports opened.
LVL 74

Accepted Solution

Jeffrey Kane - TechSoEasy earned 1500 total points
ID: 39816408
Then it's time to start logging:


Author Comment

ID: 39819404
Problem resolved. Wound up being that my external DNS records for A/V edge and Web Conferencing edge did not match what was in the topology (IP addresses were incorrect). Simple.

Thanks all for the input.

Featured Post

Survive A High-Traffic Event with Percona

Your application or website rely on your database to deliver information about products and services to your customers. You can’t afford to have your database lose performance, lose availability or become unresponsive – even for just a few minutes.

Question has a verified solution.

If you are experiencing a similar issue, please ask a related question

When you try to share a printer , you may receive one of the following error messages. Error message when you use the Add Printer Wizard to share a printer: Windows could not share your printer. Operation could not be completed (Error 0x000006…
During and after that shift to cloud, one area that still poses a struggle for many organizations is what to do with their department file shares.
After creating this article (http://www.experts-exchange.com/articles/23699/Setup-Mikrotik-routers-with-OSPF.html), I decided to make a video (no audio) to show you how to configure the routers and run some trace routes and pings between the 7 sites…
This video gives you a great overview about bandwidth monitoring with SNMP and WMI with our network monitoring solution PRTG Network Monitor (https://www.paessler.com/prtg). If you're looking for how to monitor bandwidth using netflow or packet s…

656 members asked questions and received personalized solutions in the past 7 days.

Join the community of 500,000 technology professionals and ask your questions.

Join & Ask a Question