Figure 26: Ucm6100 Zero Config - Grandstream Networks UCM6102 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 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, https://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->Zero Config->Auto Provision Settings,
fill in the auto provision information.
Firmware Version 1.0.7.11

Figure 26: UCM6100 Zero Config

UCM6100 Series IP PBX User Manual Page 63 of 233