Yealink CP860 User Manual page 132

User Guide for the CP860 HD IP Conference Phone
Enter the desired number in the BLA Number field.
3.
Click Confirm to accept the change.
4.
To register account and configure BLA feature on phone B via web user interface:
Register the account 10462190020.
1.
Click on Advanced, and then select Draft BLA from the pull-down list of Shared Line.
2.
120