Grandstream Networks GXV3350 - GBX20 Extension Boards; Figure 99: GXV3350 Programmable Key APP - Add Number from Contacts; Figure 100: GXV3350 Programmable Key APP - Number List

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GXV3350 User Guide
Version 1.0.1.8
Figure 99: GXV3350 Programmable Key APP – Add number from Contacts
4. The added numbers will show in the list as the figure shown below.
Figure 100: GXV3350 Programmable Key APP – Number List
GBX20 Extension Boards
GXV3350 also supports programmable keys with extension board (GBX20). Users can configure the
programmable keys from Web GUI → Applications → Extension Boards.
For the details of how-to configuration information, please refer to GXV3350 Administration Guide.