We have polycom CX500, CX 600 phones on our network and suddenly some standalone phones ( which are not getting registered to Lync server using the AD credentials) which use 4 digit phone numbers and a 6 digit pin number are getting disconnected.
When i try to connect them back, they give me the "Certifiate Web Service Cannot be found" error. Request you to give me your valuable suggestions. Appreciate all the help i get.
Hello @Vijaya ,
Polycom and other manufacturers produce these optimized for Microsoft® Lync® or Skype® for Business devices after a reference design and the embedded OS running on the phones is provided, supported and maintained by our partner Microsoft®.
You therefore may want to reach out to the Microsoft® community and / or Microsoft® support directly instead as this is the most direct and efficient path.
Polycom is unable to add any new features into the functionality of these CX Devices
Please try here
I checked the DHCP options and NTP options. I do have some phones already working fine with the DHCP options in place. Only few phones are throwing me this error. So, i am being clueless here.