eSight, DNS server, and DHCP server have been deployed in the live network of an enterprise. If 200 IP phones are added, which of the following methods cannot be used to configure the TR069…

Question

Options

• AOn the DNS server, configure the mapping between the domain name and the IP address of
• BDeliver the TR069 parameter to the IP phones in batches through the DHCP Option246 field
• CUse access scan.
• DPerform configurations on the web configuration page of the IP phones.

• A
  15% (3)
• B
  5% (1)
• C
  5% (1)
• D
  75% (15)

Explanation

Option D is the correct answer because accessing the web configuration page of each IP phone is an inherently individual, device-by-device operation - you must log into each phone's web UI separately, making it impossible to push TR069 settings to 200 phones simultaneously as a batch.

Why the distractors are wrong (i.e., they CAN be used for batch config):

• Option A (DNS) works because IP phones can auto-discover the TR069 ACS (Auto Configuration Server, in this case eSight) by resolving a standard domain name - configuring one DNS record propagates the ACS address to all phones at once.
• Option B (DHCP Option 246) works because Huawei IP phones support receiving TR069 parameters (such as the ACS URL and credentials) via DHCP Option 246, so a single DHCP server change delivers the config to every phone upon network boot.
• Option C (Access scan) works because eSight can actively scan the network to discover and configure devices in bulk, pushing TR069 parameters to all found phones without manual intervention per device.

Memory tip: Think of the word batch - any method that touches a central server (DNS, DHCP, eSight scan) automatically scales to all devices. The web page method breaks the "batch" rule because it requires a human to visit each phone one at a time, which is the opposite of automation.

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