Set up shared lines to enable users to make calls to one phone number that can be answered by multiple phones.
With shared lines, calls made to one phone number can be answered by multiple phones. A phone registers a SIP line using a single credential set that is shared across multiple devices or a unique set of credentials per device. The shared appearance and call routing is handled by the SIP server.
Configuring a shared line consists of two parts:
Configure your voice server with SIP credentials that are configured as a shared line.
Configure the device with SIP credentials with shared line support.
Note: Not all devices or SIP servers support Shared Lines (also known as Shared Call Appearance or Shared Line Appearance). Refer to your device manufacturer and voice service documentation.
CONFIGURE YOUR VOICE SERVER
Configure SIP accounts
Once you have your SIP account credentials configured, follow these steps:
Select the VoIP Credentials tab.
Click Add.
Select your desired Tenant.
Enter the VoIP Username, Password, and Alias.
Note: These credentials are used later to configure your device(s).
Click Continue.
CONFIGURE THE DEVICE
For this example we are configuring a Poly VVX 500 to register Line 2 as a shared line using a previously configured, shared line capable VoIP credential set.
Manual configuration
SIP Registration
Edit the phone's configuration and navigate to Line 2.
Select the correct VoIP Credentials.
Set the Type to Shared.
Line keys
Ensure a line key is configured on the device for the user to interact with that line.
Navigate to the Buttons tab.
Select Line Keys.
Configure Line Key 2 > Category as Line and set the Index to 2.
Save your configuration and provision the device.
Use the Visual Button Manager
For supported devices, the Visual Button Manager (VBM) simplifies shared line configuration by configuring additional options on your behalf.
SIP Registration
Edit the phone's configuration and navigate to Line 2.
Select the correct VoIP Credential.
Line keys
Ensure a line key is configured on the device for the user to interact with that line.
Navigate to the Buttons tab.
Select Visual Button Manager.
Select the desired key you want to configure as a line key for this new shared line.
Set the Type to Shared Line.
Set Line to Shared Line: 2.
Save your configuration and provision the device.