Figure 20: Ucm6100 Zero Config - Grandstream Networks UCM6100 Series User Manual


SIP SUBSCRIBE
When the phone boots up, it sends out SUBSCRIBE to a multicast IP address in the LAN. The
UCM6100 discovers it and then sends a NOTIFY with the XML config file URL in the message body.
The phone will then use the path to download the config file generated in the UCM6100 and reboot
again to take the new configuration.

DHCP OPTION 66
This method should be used on the UCM6102 because only the UCM6102 has WAN and LAN port with
LAN port supporting the router function. When the phone restarts (by default DHCP Option 66 is turned
on), it will send out a DHCP DISCOVER request. The UCM6102 receives it and returns DHCP OFFER
with the config server path URL in Option 66, for example, http://192.168.2.1:8089/zccgi/. The phone
will then use the path to download the config file generated in the UCM6100.

mDNS
When the phone boots up, it sends out mDNS query to get the TFTP server address. The UCM6100 will
respond with its own address. The phone will then send TFTP request to download the XML config file
from the UCM6100.
To start the auto provisioning process, under Web GUI->PBX->Basic/Call Routes->Zero Config, click on
"Auto Provision Settings" and fill in the auto provision information.
Firmware Version 1.0.5.19

Figure 20: UCM6100 Zero Config

UCM6100 Series IP PBX User Manual Page 52 of 183