How to set up door bell function for 721-H?
Serial NO. : H00107016-EN
Date of Editing : 2011-06-24
Questions : How to set up door bell function for 721-H?
Problem Solving :
1. 721H can make “#” button to be ring bell.
2. Enter programming mode (press “*123456#”)
3. Press “24*128#” DDD value = 1 (Enable)*128 = 128
