Telephone Provisioning via DHCP
Instead of coupling each individual desktop phone with the pascom phone system via provisioning URLs, you can also automatically distribute the provisioning URLs via DHCP
DHCP provisioning is only possible if a corresponding VPN connection has been established between the local network and the pascom telephone system!
Using your Own DHCP Server
As a DHCP servers are already available in almost ever local network, it is recommended to update this DHCP server to deliver the provisioning URLs to the desktop phones.
Configure the DHCP Server
On Windows DHCP servers (or DHCP servers which follow this options schema), you will now need to set the DHCP Option 66 and possibly 67. With Linux/Unix DHCP servers these options are known as tftp-server-name and filename.
The provisioning URLs differ depending on the telephones to be deployed.
As soon as the VPN connection has been set up on the pascom, the provisioning URLs change. The path looks like this.
|Phone Manufacturer||Option 66 (tftp-server-name)||Option 67 (filename)|
|Yealink, Grandstream, Aastra, Mitel||http://[your_VPN_IP]/provisioning/|
Should you only wish to send these options exclusively to telephones, then you can restrict the use of the option to the manufactures used by you:
|Phone Manufacturer||MAC address|
Test the Provisioning
Reset your Desktop phones to factory settings. Should the DHCP function with the correct options, the desktop phone will be configured automatically. If the provisioning process was succesful, you will now see “Emergency Only” or a username or location name in the telephone display.
As soon as your end devices have been provisioned via the VPN connection, the audio stream of your calls will also run via the VPN connection