Enable DHCP on the phone to discover the phone settings from the Edge
Configuring managed phones in PureCloud, click Admin > Telephony > Phone Management creates provisioning information. The PureCloud Edge serves as the provisioning server and hosts this information for retrieval by the phones. The phone discovers this information using the DHCP protocol.
DHCP is configured on many managed phones by default. You can add these phones directly to the network. If your phones do not have DHCP enabled, use the manufacturer’s instructions to configure DHCP before adding the phones to the network. PureCloud supports DHCP DISCOVER, DHCP INFORM, and static HTTP provisioning for most managed phones.
For more information about deploying DHCP, see Phone Provisioning with DHCP and DNS.