VVX411 - Skype for Business Auto-discovery

[Anonymous]

Folks,

When I turn off DHCP and use a static IP address on my Polycom VVX411, the Skype for Business auto-discovery fails. I use a default gateway of xxx.xxx.xxx.254. If I turn on DHCP, the phone connects to Skype for Business. Anyone seeing this problem and know how to resolve?

Thanks,

Joe

[SteffenBaierUK]

Hello @jrebele,

welcome to the Polycom Community.

I am not aware of any issues or change in behaviour as long as you would be using the same details for DNS etc.

Please ensure to provide some feedback if this reply has helped you so other users can profit from your experience.

Best Regards

Steffen Baier

Polycom Global Services

[Anonymous]

The Lync Phone Edition (Aries) devices depend on a bunch of DHCP options to find the server.

http://blog.schertz.name/2010/12/configuring-lync-server-for-phone-edition-devices/

I believe that's still true for the modern VVX phones if you're trying to use PIN based auth.

Rather than using static IPs, try setting a DHCP reservation on the server for the phone's MAC address. Same basic outcome, but auto-discovery via DHCP still works.

[SteffenBaierUK · Accepted solution]

Hello @jrebele,

as already commented by @RyanTrainor there are various mechanisms that Microsoft documents in order to get phones working.

DHCP option 120 and Option 43 as an example is required for Extension & PIN and are only checked via DHCP. We can work around this specifying a STS-URI so that should not be the issue.

I would always chose DHCP over fixed IP's as this will just end up in a mess.

Please ensure to provide some feedback if this reply has helped you so other users can profit from your experience.

Best Regards

Steffen Baier

Polycom Global Services