DSX Product Description Features ◆ 25
Features
Background Music
Background Music (BGM) sends music from a customer-provided music source to speakers in keysets. If an
extension user activates it, BGM plays whenever the extension is idle. Incoming calls and Paging announce-
ments temporarily override (turn off) Background Music. Background Music requires a customer-provided
external music.
Barge In (Intrusion)
Barge In permits an extension user to break into another extension user’s established call. This sets up a
three-way conversation between the intruding extension and the two parties on the initial call. The user can
Barge In on an Intercom call or outside call.
Battery Backup
In the event of commercial AC power failure, the NAND Flash memory on the CPU PCB permanently main-
tains the site database. Additionally, an internal battery on the CPU provides short-term backup of the sys-
tem date and time (Real Time Clock) and certain station parameters (such as the Caller ID log). The battery
will hold the Real Time Clock and station parameters for up to 10-14 days. When commercial AC power is
restored, the system restarts with all programming and the time and date intact.
Additional Battery Backup capability can be provided by a customer-supplied Uninterruptable Power Sup-
ply (UPS). The length of time the UPS will power the system when power fails depends on the capacity of
the UPS unit. Consult with the UPS manufacturer for the specifics.Refer to the Hardware Manual for addi-
tional details.
Call Coverage Keys
A keyset can have Call Coverage Keys for a co-worker’s extensions, Ring Group master numbers and UCD
Group master numbers. The Call Coverage Key lights when the co-worker’s extension is busy, flashes slowly
when the co-worker has an incoming call, and flashes fast when the co-worker is in Do Not Disturb. The Call
Coverage Key can ring immediately when a call comes into the covered extension, ring after a delay or not
ring at all. In addition, the keyset user can press the Call Coverage Key to intercept their co-worker’s incom-
ing call. They can also go off hook and press the Call Coverage key to call the covered extension. An exten-
sion can have as many Call Coverage Keys as they have available Feature Keys on their telephone.
Broadcast music through the telephone speaker for a more pleasing work environment.
In an emergency, use Barge In to get through to a co-worker right away.
CAUTION
Unauthorized intrusion on calls using this feature may be interpreted as an
invasion of privacy.
The system provides permanent backup of system memory.
Call Coverage keys allow an extension user to cover a co-worker’s calls from their own telephone.
Call Coverage Key Busy Lamp Indications
When the key is: The covered extension is:
Off Idle or not installed
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