Section 700 - Operation
Call Duration Display
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FF3 (Extension): Offhook Signal
FF4 (Ringing and Hunt Groups): Call Coverage Group Member Table
Up to sixteen CaLl Coverage Groups can be programmed into your system.
A Call Coverage Group can have up to two covering phones and up to six
A member of one Call Coverage Group cannot belong to another Call
Coverage Group or to a Hunting Group.
A Single-line telephone (SLT) or Digital Single Line telephone (DSLT)
can be a member of a coverage group, but cannot be a covering phone.
Calls to an extension in DND do not cover.
Calls to an extension with Call Forwarding activated do not cover.
If the Call Forwarding feature or the Absence Message feature is activated
for covering phone No. 1, covering phone No. 2 will "cover" the &her
extensions in the group.
Voice intercom calls do not ac,tivate call coverage. Only tone intercom
calls can activate call coverage.
The length of a conversation on a CO line usually appears on display phones.
The duration display shows the number of minutes and seconds the call has
The display does not begin right away; it begins either 16 or 30 seconds after
the call begins, depending on how the DBS is programmed.
Chapter 4. Key Telephone Features