Shared Line Appearance for Skype for Business

When your phone is registered with the Skype for Business Server, you can use the Shared Line Appearance (SLA) feature to share a single line with other contacts as a member of a group. System administrators assign members to SLA groups.

Any SLA group member can place, answer, hold, or resume calls on the line, and all group members can view the status of a call on the shared line on their phones. Each line supports up to 24 call appearances. Only one call at a time can be active on the shared line appearance. If a call is placed to a shared line with an active call in place, the incoming call is sent to another shared line.

Check with your system administrator to find out if this feature is available on your phone.