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Tag Archives: Skype for Business

Proxy side ICE connectivity check failed

22 Saturday Dec 2018

Posted by Paul Bloem in Edge Server, Event ID 14402, Skype for Business, Troubleshooting

≈ 2 Comments

Tags

Call Routing, ICE Connectivity, Skype for Business

Issue

Initial complaint was that all users homed to a specific pool could not reach voicemail, neither could any callers leave messages.

Environment

Lync 2010 with an Enterprise Pool (co-located Mediation servers), multiple SBA’s and SBC’s as well as an Edge Pool. Voicemail in O365. To make things interesting, each pool has its own UM Policy.

Replicated the issue by dialing the subscriber access number in O365. Basically, the call is established, I hear silence for 10 seconds and the call is dropped.

Troubleshooting

Investigating I found that any users homed to the Enterprise Pool were experiencing the issue. Looking at the monitoring reports, diagnostic report shows the diagnostic ID 22 with a reason “Call failed to establish due to a media connectivity failure when both endpoints are internal”. Now that sounds familiar..

Diagnostic ID 22In the past I have seen these sorts of issues and found that they usually occur when there is a routing issue involving the Edge Pools and thus a breakdown in the candidate negotiation process. However, this is the first time I have seen this sort of issue when dialing a PSTN number.

Move the user to another pool and the issue disappears, right so pool specific.

Next stop, Edge server to see what its thoughts are on this call failure. Looking at the Event logs I find the error Event ID 14402 which corelates to the attempts to O365 Voicemail.

Event ID 14402The non-internal servers that are named in the error is the on-prem UM server. “Add it to the list of internal servers on the Access Edge Server”, well I don’t think I have seen that list since the OCS days. There must be a list of sorts but no bells ringing just yet.

Running snooper trace I got the same Diagnostic ID and reason as we saw earlier in the diagnostic report. But wait, there is also another clue. The exception thrown is “Proxy side ICE connectivity check failed”, and the component is “mediation server”.

both endpoints internalLooking at the Lync Workloads Protocal poster, this ICE traffic is on the internal interface. The Lync Workloads Protocal poster also confirms that the components affected are Mediation, UM and Enterprise Pool. So in summary, a specific Pool is unable to complete an ICE check with the Edge Pool. Testing from these servers I can confirm that this traffic is allowed (simply 443 TCP and 3478 UDP).

Wonder if anyone else can shed light on this, off to google. Not a single hit with the same diagnostic error or call scenario. Not entirely surprised, also I suspect that this is not the only symptom of the underlying issue. My google search did however find a possibility that the Mediation service and Edge service are not associated correctley (thanks Mattias)

And there it is..or in the case of the EdgeServer entry for the pool in question, there it is not.

Mediation Association

Solution

Add the association between the Mediation Server and the Edge Server, of course. Test and sorted. Found the list 😉

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Product Review: Sennheiser TeamConnect Wireless

21 Monday May 2018

Posted by Paul Bloem in Audio Conferencing, Conferencing, Microsoft Teams, Product Review, Sennheiser, Skype for Business

≈ Leave a comment

Tags

Audio Conferencing, Conference Rooms, Microsoft Teams, Product Review, Skype for Business

In my ongoing quest for finding new and shiny things, I came across the Sennheiser TeamConnect Wireless product range.

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Overview

Sennheiser’s TeamConnect Wireless is a portable conference system providing audio by means of either USB, Bluetooth, 3.5mm jack or NFC (Near Field Communication technology). This variety of connectivity options allows BYOC (bring your own conference [just made that up]). Be it a laptop, smart device or Surface Hub, connecting is simple. This sleek design and flexibility makes for a classy solution. With up to four satellites you got the room covered.

Want a more permanent setup? The tray set is the answer. With the 2 or 4 satellite solution quietly resting in the tray, charging away, you could be forgiven for thinking that it was part of the dĂŠcor, some piece of art innocently placed to balance the room.

There are 3 different options: –

  1. TeamConnect Wireless (case set): Sennheiser TeamConnect Wireless – this option is portable and comes in a neat, hard shell carry case that also doubles as a charging station.
  2. TeamConnect Wireless – Tray Set: It features one master unit and three slave satellites plus the stationary tray charger. The Tray Set is designed for smaller rooms of up to 24 participants.
  3. TeamConnect – Tray-M (M for midsized): The Tray-M Set is a smaller version of the Tray Set. It features one master unit and one satellite plus the stationary tray charger. The Tray-M Set is designed for smaller rooms of up to 12 participants.

Highlights

  • beautiful design
  • no power source needed in operation
  • Lithium Ion rechargeable battery (recharges in 10 hours)
  • hard-shell charging/transport case with an external power supply unit
  • recharge by simply plug the case into a power source
  • touch sensitive controls for mute and volume
  • professional-sounding
  • set up in less than a minute
  • dual-microphone configuration within each satellite

See it in action HERE

Specifications

Operating time up to 8h with BA 100
Standby time up to 24h
Charging time Up to 10h
Range Bluetooth approx. 10m / DECT approx. 20m
Frequency range 1880 – 1900 MHz 1920 – 1930 MHz

1893 – 1906 MHz 2400 – 2485 MHz

Frequency response (Microphone)

200 Hz – 12 kHz

Frequency response (Headphones)

200 Hz – 9 kHz

Audio quality 16 bit / 24 kHz
Microphone omni-directional

Noise-cancelling

Connectivity Bluetooth, NFC, 3.5mm, USB
Bluetooth 4.2 / HFP / HSP / A2DP
Weight approx. 4700g
RF output power max. 100 mW (EIRP)
Power Satellites: 3.7 VDC via BA 100 / or via USB to TC-W Master 5V/ max. 500mA
Voltage 12 V DC
Charging Current 1 A
Controls: All satellites Volume and mute on all satellites
Controls: Master satellites Bluetooth pairing

NFC (Near Field Communication technology) status icon

3.5mm jack plug icons

 Suggestions for improvement

Please ship with Bluetooth dongle

Would be great to have a disconnect\end call button on the units. Seems like an oversight as there is no way to end the call from them.

Why not certified for SFB\Teams?

Comment from Sennheiser:

“TeamConnect Wireless works with Skype for Business (as with other UC platforms without limitations. Microsoft changed the requirements for the S4B certification, due to the new category of “Skype Room System”. This follows the approach of a fixed, installed solution in dedicated rooms. Since this concept contradicts with the wireless, flexible concept for audio conferencing of TC-W, a certification is not possible”

In conclusion

It’s a beautifully designed product, what you would expect to see with Sennheiser. Also, it just works. Only real challenge is the price point, but again, if you took all the hours wasted on getting audio setup correctly you could easily justify spending USD 3,900.

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Product Review: Plantronics Voyager 8200 UC

20 Saturday Jan 2018

Posted by Paul Bloem in Product Review, Skype for Business, Teams

≈ 13 Comments

Tags

8200 UC, Headset Review, Microsoft Teams, Plantronics, Skype for Business

Firstly, I’d like to mention that I have had this device for just over 4 months. Usually I would have written a review long before now, but I have learnt that very often the first few months of any new product are prone to hiccups.

I am glad I waited, the latest (as of writing) firmware version 218 has resolved an issue that is related to Skype for Business. I will mention the issues I had at the end of this post.

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First impression was that it looks very elegant. Comes in either a white or Grey finish. The Over-the-head band is substantially more robust in look and feel. Its well padded Over-the-head with a breathable type of material finish resting on your head. The ear cup cushioning is soft and comfortable.

Highlights

  • I really liked that there are 2 levels of ANC, 1 for Office and another for noisy environments
  • Smart sensors allow you to answer calls by simply putting on the headset and automatically mute your calls or pause your music by taking it off

  • The controls have been well thought out and repeat the layout of the Voyager Focus UC.
  • A 3.5mm jack! So stoked that this has been included as it extends the usability massively
  • Open Mic to amplify background noise, I don’t use this too much but it is a nice feature I have played with from time to time. I feel like it amplifies my hearing
  • No boom microphone! This is only the second headset I have reviewed without a boom. Last time around I was just a little disappointed BUT Plantronics have done a great job with the 8200 UC. Its really set a new benchmark and in my opinion leads the market in this specific respect. A pair of dual Omni-direction microphones make this possible
  • Dynamic mute alert detects and notifies you when you talk while on mute
  • Doubles as a business headset and a music headset, don’t discount this fact!
  • The battery just goes on and on! I have had 2 days of good use (about 5-6 hours each) and 26 days on standby on my current charge..its still going!
  • The soft case is classy and I do like the additional pocket that stows away cabling. Which by the way , comes with a USB cable, 3.5mm cable, USB dongle and a flight adaptor

Testing included hundreds of Skype for Business and Microsoft Teams calls as well as at least 250 hours of listening to music on Spotify (via a combination of PC and iPhone)

I found that the call quality was really good. When in the office I didn’t really need ANC enabled but it certainly reduced the office noise callers were usually hearing when calling me. Working from the local Coffee Brewers I cranked up the ANC (very noisy environment) and although the audio experience was slightly less natural, the ANC took care of the noise so well that I could continue my conversation.

I also noticed that the inside surface of the ear cup is smooth and covered in a slightly padded material. So when your ear makes contact with the inner surface its not irritating.

Specifications

Talk Time Up to 20 hours
Standby Time Up to 1 month
Range Up to 30 Meters\98 Feet
Frequency Bluetooth v4.1
Audio Performance Active Noise Canceling
Call Answer/End Yes
Volume +/- Yes
Earpiece/Headset Weight 289 grams\10 oz
Wireless Technology Bluetooth
Connectivity Bluetooth/3.5mm
Connects To PC, Tablet and Mobile
Skype for Business Certified Yes
Lync/Skype for Business Yes
Device Type Bluetooth
Speaker Style Binaural
Wearing Style Over-the-head
Microphone Noise-canceling
Headset Family Plantronics Bluetooth
High Density Environments Yes
Integrated Busylight No
Digital Encryption 128-Bit
Limited Warranty 1 year
USB Port Yes
Mute Yes
Digital Signal Processing Yes
PC Wideband Audio Yes

Suggestions for improvement

  1. I would like to see an option for a hard case like the BackBeat PRO 2 SE has. I am even prepared to pay extra for that. It’s probably not necessary but would certainly give me peace of mind when I am out and about.
  2. I think it may be worth providing a larger ear cup option to avoid any wear fatigue with persons having a slightly larger ear. The inside of the cups measures 60mm\2.36in, this is the same size as other units I have tested so this seems to be a norm across most brands.

The only negative I can really mention is that this is not an entry level unit and so comes at a price and its not cheap. However, in this category its still one of the more affordable headsets.

NOTE

Do update the firmware when you receive your Plantronics Voyager 8200 UC. I got mine on the initial release firmware 115. After a lot of testing I was stumped by a clicking noise on Skype for Business calls. The good folks at Plantronics replaced the unit promptly but the issue continued. Once I updated to firmware version 218 the 8200 UC was brilliant!

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