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
Document Version 2015-01 Administrator Guide 61
2.8 DHCP Provisioning