Product specifications

420HD IP Phone with Microsoft Lync
Administrator's Manual 64 Document #: LTRT-09930
4.2 Configuring Automatic Provisioning via Static DNS
Record
The Static DNS (Generic Domain Name) Record method is used for automatic provisioning
when you are unable to manage your DHCP server. If the provisioning server does not
support using SIP SUBSCRIBE and NOTIFY messages mechanism as described above
and no response for the SIP SUBSCRIBE message has been received, the phone tries to
retrieve firmware and configuration files using the following URL:
tftp://ProvisioningServer/<Phone Model Name>/
For example:
 The phone tries to obtain the following firmware file:
tftp://ProvisioningServer/420HD/420HD.img
 The phone tries to obtain the following configuration file:
tftp://ProvisioningServer/420HD/<MAC address>.cfg
(e.g. tftp://ProvisioningServer/420HD/001122334455.cfg)
It is the Administrator’s responsibility to configure a DNS entry called ProvisioningServer
on the DNS server and set it to the TFTP server IP address.
Note: If Generic Domain Name is used, the automatic provisioning mechanism
periodically tries to retrieve new firmware/configuration from Provisioning
Server domain name.
 To configure Static DNS Record:
 Using the Web interface:
1. Access the Automatic Update page (Management tab > Automatic Update
menu > Automatic Provisioning).
Figure 4-4: Web Interface - Static DNS Record
2. Configure using the table below as reference and click Submit.