Phone Initialization; Phone Status; Automatic Phone Initialization; Dhcp (Dynamic Host Configuration Protocol) - Yealink SIP-T21 E2 User Manual

User Guide for the SIP-T21(P) E2 IP Phone
After your phone is powered on, the system boots up and performs the following steps:

Automatic Phone Initialization

The phone finishes the initialization by loading the saved configuration. The LCD screen
displays "Welcome Initializing...please wait" during this process.

DHCP (Dynamic Host Configuration Protocol)

The phone attempts to contact a DHCP server in your network to obtain valid IPv4
network settings (e.g., IP address, subnet mask, default gateway address and DNS
address) by default.
Note
If your network does not use DHCP , proceed to
You can view phone status via phone user interface or web user interface.
Available information of phone status includes:
Network status (e.g., IPv4 Status, IPv6 Status, IP Mode and MAC address).

Phone status (e.g., Product Name, Hardware, Firmware, Product ID, MAC address

and Device Cert).
Account status (e.g., register status of SIP accounts).

Note
You can view device certificate status via phone user interface only.
To view the phone status via phone user interface:
1. Press
2. Press
To view the phone status via web user interface:
1. Open a web browser of your computer.
2. Enter the IP address in the browser's address bar, and then press Enter.
16
, or press Menu->Status.
or to scroll through the list and view the specific information.
Basic Settings
Network on page 17.