Telephone Provisioning via DHCP

Self Hosted only

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 when the desktop phones AND the pascom server are both located in the same local network!

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.

Allow DHCP Provisioning on the pascom Server

Per default, the local DHCP provisioning is activated.

Should you have deactivated this function in the past, log into the pascom Management UI (not the phone system) and under select the corresponding network card and click . Activate the option and save your new configuration.

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.

In the following example, please replace [pascom_Server] with the IP address or DNS name of your pascom server and [phonesystemname] with the name of your pascom phone system:

Phone Manufacturer Option 66 (tftp-server-name) Option 67 (filename)
Snom http://[pascom_Server]:8880/p/[phonesystemname]/{mac}
Yealink, Grandstream, Aastra, Mitel http://[pascom_Server]:8880/p/[phonesystemname]/
Auerswald http://[pascom_Server]:8880/p/[phonesystemname]/ <MACADR>

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
Snom 00-04-13-*-*-*
Yealink 00-15-65-*-*-*
Grandstream 00-0B-82-*-*-*
Aastra 00-08-5D-*-*-*
Auerswald 00-09-52-*-*-*

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.

Using the pascom DHCP Server

Alternatively, you can also use the pascom DHCP server.

Log into the pascom Server Management UI and under select the corresponding network card and click .

Activate the options and .

Configure the DHCP Server:

Option Description Example
DHCP Mode All Requests: Answer all DHCP requests
Only supported telephones: Only distribute IP address to supported telephones
DHCP range from The first IP address to be assigned by the DHCP server 192.168.1.100
DHCP range to The last IP address that the DHCP server should assign 192.168.1.150
DHCP Gateway Network Gateway 192.168.1.1
DHCP DNS DNS Server 192.168.1.1
Forward phone request to this phone system pascom pascom phone system name to which provisioning requests should be forwarded

Save your configurations.

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.