Configure the Network

Configure the following network settings to register Poly devices with Skype for Business.


  1. Set up or verify Domain Name System (DNS) service (SRV) records to allow the devices to discover Skype for Business servers automatically.
    For information on creating and verifying DNS SRV records, see the latest documentation on Microsoft TechNet. If you’re setting Microsoft Call Admission Control (CAC), refer to Microsoft Plan for call admission control in Skype for Business Server 2015 for required bandwidth guidelines.
  2. Obtain a root certificate authority (CA) security certificate using one of the following methods:
    Certificate Method Description
    Lightweight Directory Access Protocol (LDAP) Domain Name System (DNS) Phones you register with Skype for Business are enable with this feature by default.
    Dynamic Host Configuration Protocol (DHCP) Option 43

    When provisioning phones from within an enterprise, you can use DHCP Option 43 to download a private CA root security certificate used by Skype for Business. The security certificate is required to support secure HTTPS and TLS connections. Along with DHCP Option 43, ensure that your devices can access Skype for Business Server Certificate Provisioning Web Service over HTTP (TCP 80) and HTTPS (TCP 443).

    Note: If you configure DHCP Option 43 in on-premises Skype for Business deployments, the phone displays only the PIN Authentication menu to users.

    For more details and troubleshooting information on DHCP Option 43, see Microsoft TechNet.

    DHCP Option 66 Use this method if you’re using a provisioning server or setting DHCP options using the following:
    • DHCP Option 161. If you’re using devices with a Skype or Lync Base Profile, use Option 161 with the address (URL or IP address) of the provisioning server. You can set the provisioning server address or URL on the device menu.
  3. Set up each user with a Skype for Business account and credentials.