Jan 19 2021 09:44 AM
Jan 19 2021 09:44 AM
I'm working on a deployment of Teams EV for a fairly large organization with a footprint across most of the world, concentrating mainly in Europe and surrounding regions.
We have a fairly simple test topology:
So - there are Microsoft planning/config docs that describe two basic scenarios - centralised SIP, and downstream breakouts with no internet connectivity (well, no inbound access from Teams, to those downstream SBCs directly). I suspect many organisations will be like mine - we've centralised SIP for 90% of our estate across the continent, but there are a few exceptions where that's not possible and we have maintained the odd E1.
These are the docs I'm talking about...
Our solution was simple:
Simple enough... however, in practice...
So our working scenario is that we really don't have LMO on for the central SBC, just downstream. It looks logical, and simple. It doesn't look anything like what's laid out by MS or Ribbon.
Funnily enough - the powershell example of an LMO config in the MS docs results in an SBC you can no longer modify in the Teams Web Admin page. Basically, the teams web admin page enforces our working config; but doesn't allow you to apply the config that microsoft put in their powershell example. This was a warning sign I wish I'd heeded earlier.
A little about me - I'm a grumpy engineer; I have 20+ years of VoIP experience with Cisco/MS/and various other systems, various MS quals including Skype/Lync, CCIE Voice. I've deployed hundreds of soft PBXs including Cisco CCM/Skype/Lync, at least 250K phones on those systems, and other associated systems such as contact centers etc. I also run a small software dev company retailing Cisco related phone tools. All that done, deploying LMO with Teams and Ribbon has given me a huge headache, bad dreams, long days and a sense of dread in the mornings that nothing else has. Maybe I'm getting old....
So this is the question - how was it for you? What worked, what didn't work, what config did you try, what do you have in production?
Please don't respond to this if you do not have direct experience of deploying Teams Direct Routing, with LMO, on the Ribbon Edge series. We can all regurgitate some dudes' blog or the MS examples/docs, that isn't what's needed here.
What worked for you? What didn't work?
OK, maybe if you have 5xxx series. That'll be phase 2...
Jan 24 2021 02:45 AM