Daniyar's Tech blog

Friday, May 5, 2017

Skype for Business/ Lync meeting expiration

Non-recurring meetings will expire in 2 weeks, if someone will opens it on 15th days after meeting end date the URL will not work with error as below. I think 14 days is hardcoded, I’m not sure we can change it – refer to http://www.justin-morris.net/lync-conference-expiration-and-deactivation-explained/

To avoid the issue, create a recurring meeting, they will expire after farthest occurrence in the future.

About timestamp – note it is hardcoded to UTC time zone.

Error:

We're having trouble getting you into the meeting.
This meeting may have expired, or it's possible you're using a bad URL. If the latter, try calling into the meeting using the phone number on the invite, or ask the organizer to drag you into the meeting from the Contacts list.

Machine:xxJoin attempted at(UTC):05/05/2017 07:52:54CorrelationId:94320997User Agent:Mozilla/5.0 (Windows NT 6.3; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/58.0.3029.96 Safari/537.36Accept Header:text/htmlapplication/xhtml+xmlapplication/xml;q=0.9image/webp*/*;q=0.8Incoming URL:https://yyyTelemetryId:ffcc417b-9794-4445-8110-a530a3016ebdError:Invalid Conference organizer or Conference ID

Thursday, April 27, 2017

Call to Exchange UM subscriber fails

We have an SBA xxx then gives an error 500 when we call to Exchange UM subscriber in hybrid Office 365/OnPrem deployment.

15000; reason="Unable to read the user properties publication for the user or contact object."; source="xxx"; appName="ExumRouting"

The solutuon/workaround is to re-create or move contact:

move-CsExUmContact -Identity sip:voicemailxxx@xxx -Target zzz

where ZZZ is hub frontend pool.

Thursday, April 13, 2017

Wireshark filter an IP out

To filter out undesirable IP do not use !=

but rather

! ( ip.addr == 10.43.54.65 )

Poylcom VVX UC software 5.5.1.15937 and lyncdiscoverinternal

Hello, small note for those who is trying to adapt lyncdiscoverinternal to point to external Reverse Proxy in order to find a good ballance for SFB mobile users. Mobile phones do not have corporate CA root certificates installed by default.

Apparently Polycom VVX UC software 5.5.1.15937 require that lyncdiscoverinternal point to internal IP, if not it will product a very "descriptive" error:

SSL_get_error Error code=5,rc(0)

The workaround is to disable lync autodiscover and point directly to an internal host:

reg.1.server.1.address="sipinternal.domain.com"

reg.1.serverAutoDiscovery="0"

or in the phone advanced menu in sign-in dialog.

or change lyncdiscoverinternal to point back home.

It looks like this is a new situation, as it seems older versions worked ok.

Wednesday, April 5, 2017

Install CMS database in SQL cluster for Skype for Business or Lync - use

when you want to install SFB CMs database skeleton on SQL failover cluster add the parameter UseDefaultSQLpaths . If not the cmdlet may wrigly guess the default location and will fail.

Install-CsDatabase -CentralManagementDatabase -SQLServerFQDN chglsqlvssfb15.IUCN.sys -SQLInstanceName SFB2015 -UseDefaultSQLpaths -Verbose