Yealink SIP-T29G User Manual page 220

User Guide for the SIP-T29G IP Phone
To register an account and configure BLA feature on phone A via web user interface:
Register the account 14019833020.
1.
Click on Advanced, and then select Draft BLA from the pull-down list of Shared Line.
2.
Enter the desired number in the BLA Number field.
3.
Click Confirm to accept the change.
4.
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