The Multiline Appearance (MLA) feature allows for multiple lines (i.e. subscribers) to be assigned to a keyset and for a line to be assigned to multiple keysets. This is particularly useful for executive-assistant arrangements.
Each keyset is assigned a primary line, and can be assigned up to 10 lines, depending on the endpoint type. The primary line is the DN for that keyset.
A keyset cannot have a line appearance of a DFT (Digital Feature Telephone)
Calls are directed as follows:
Calls to the primary line of a keyset are simultaneously directed to all other keysets that have that line configured as a secondary line.
Calls to a phantom line are simultaneously directed to all keysets that have that line configured as a shared phantom line.
On the keysets, the primary line and each secondary or phantom lines are assigned to separate line keys. A user can press the line key associated with a line at any keyset to originate, answer, hold, retrieve or reject calls. The LED for each line key indicates the status of the associated DN and the action of the telephone when a line key is pressed.
What actually happens when a call is rejected on a shared line depends on the RTP (Resilient Telco Platform) Parameter Srx/Sip/KeysetCallRejectionMode.
If set to 0 (default), the device stops alerting, but the call is not released and hence can be retrieved at other appearances of the line.
Note that the line remains busy until the caller goes onhook. It can not be freed from the rejecting phone.
If set to 1, the result depends on the line type:
rejecting a call on the keyset's primary line will release the call
rejecting a call on the keyset's secondary line will stop the alert but NOT release the call (with the consequences stated above)
For OpenStage and optiPoint keyset telephones, the administrator can assign one of the following ring preferences to each line appearance:
Ring: The line always audibly alerts when an incoming call is presented and calling party information appears on the display.
No ring: The associated line key LED indicates an incoming call, but no audible alerting occurs and no calling party information appears on the display.
Delay ring: The line audibly alerts after a configured delay and calling party information appears on the display
For OpenStage and optiPoint keyset telephones, this feature requires configuration in Lotus Sametime Unified Telephony and in the endpoint; for the optiClient 130 S, this feature is controlled via the endpoint.
All line appearances must reside on the same switch and within the same IP addressing domain.
Parent topic: Keyset Telephone
RTP Management via Telephony Control Server Assistant