Figure 73: Ucm6200 Zero Config - Grandstream Networks UCM6206 User Manual

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SIP SUBSCRIBE
When the phone boots up, it sends out SUBSCRIBE to a multicast IP address in the LAN. The UCM6200
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 UCM6200 and take the new configuration.
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DHCP OPTION 66
Route mode need to be set to use this feature. When the phone restarts (by default DHCP Option 66 is
turned on), it will send out a DHCP DISCOVER request. The UCM6200 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 UCM6200.
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mDNS
When the phone boots up, it sends out mDNS query to get the TFTP server address. The UCM6200 will
respond with its own address. The phone will then send TFTP request to download the XML config file from
the UCM6200.
To start the auto provisioning process, under Web GUI->PBX->Zero Config->Zero Config Settings, fill in the
auto provision information.

Figure 73: UCM6200 Zero Config

UCM6200 Series User Manual
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