2.8 DHCP Provisioning
The following illustration depicts an overview of DHCP provisioning.
SIP Phone DHCP Server Carrier Provisioning Server Carrier SIP Server
DHCP Request
HTTP GET {MODEL}.cfg
DHCP ACK
http://prov.com/utg200/{MODEL}.cfg
SIP REGISTER

A

Carrier’s provisioning
server URL

B

HTTP GET Config{MAC}.cfg
HTTP GET Config{MODEL}.cfg
HTTP GET ConfigCommon.cfg

C

D

1. Connect device to network
•The device is assigned an IP address by the DHCP server, and also receives the provisioning URL
from the DHCP server using DHCP option 160/159/66.
2. Get initial configuration file
•The device attempts to connect to the carrier's provisioning server and get the initial configuration file.
3. Get device configuration files
•The device checks for the device configuration URL in the initial configuration file and downloads the
device configuration files accordingly.
4. Connect to the SIP server
52 Administrator Guide Document Version 2014-05
2.8 DHCP Provisioning