Chapter 4. Key Telephone Features Section 700 - Operation
4-66 DBS Manual - Revised April 2000 DBS-2.3/9.2-700
• When a CO call or an Intercom Call arrives, a search begins for a Multi-
Line key not in use. The lower numbered FF keys will be searched first.
When a free Multi-Line key is found, the LED flashes green and the
extension rings.
• If another phone answers a n incoming trunk call, the ML LED on your
extension goes off and the ringing stops, indicating that the Multi-Line key
on your telephone is no longer in use.
• When dialing an extension number, the system automatically selects the
free Multi-Line key with the lowest number.
• If the CO line or held extension does not respond before the Rec all Timer
expires, the extension rings and the Multi-Line key flashes green.
• If LCR is enabled, ML keys can be assigned for trunk group 89. However,
the FF keys will not light.
ML/MCO Separation
(CPC-AII and CPC-B Version 4.0 or higher)
Description
Beginning with CPC-B Version 4, each extension can have either MCO or
ML keys. In previous software versions, MCO or ML keys were only
available on a system-wide basis, and the type of key that was available
differed according to the software release. Table 4-7 contains definitions of
MCO and ML keys. Table 4-8 shows MCO/ML availability with previous
releases.
Table 4-8. MCO/ML availability
Related Programming
• FF3 (Extension): ML/MCO Separation
• FF5 (Keys): FF Key Assignments (all)
CPC Version Type of
Key
CPC-A MCO only
CPC-B 1.0 MCO only
CPC-B 2.0 - 3.1 ML only
CPC-AII and CPC-B
4.0 and above MCO or ML