Instruction manual

Page 1950 of 3156 Make Set Busy Improvement
553-3001-306 Standard 10.00 January 2002
The MSBI feature is configured as a new Class Of Service, Make Set Busy
Improvement Allowed (MSIA) or Make Set Busy Improvement Denied
(MSID). The MSBI feature is configured on a specific Terminal Number
(TN) and affects the Single Call Non-Ringing (SCN), Multiple Call Non-
Ringing (MCN) and the Private Line Non-Ringing (PVN) keys on that
specific TN.
Operating parameters
This feature can be used on Meridian 1 proprietary sets with DN key type
SCN, MCN or PVN.
The MSBI feature does not support data terminals, Integrated Services
Digital Network (ISDN) Basic Rate Interface (BRI) sets or analog (500/2500)
sets. However, the ringing appearances of the DN can be a (500/2500) set but
not for a private line.
Feature interactions
Directory Number Delayed Ringing
The MSBI feature takes precedence over the Directory Number Delayed
Ringing feature (DNDR). If the MSB key is active on all ringing SCR/MCR
sets, the non-ringing SCN/MCN sets ring immediately even if the DNDR
feature is active.
If the MSB key is not active on all of the SCR/MCR sets, then the DNDR
feature is applied to the SCN/MCN keys.
Executive Distinctive Ringing/Distinctive Ringing by DN
With the distinctive ringing features, the MSBI feature can assign different
audible notifications to specific DNs. The audible notification is defined even
if the DN is non-ringing. If the MSBI feature turns a non-ringing key into a
ringing key, the defined distinctive audible notification is heard.
Multiple Appearance Directory Number
The Make Set Busy Improvement (MBSI) feature affects Multiple
Appearance DNs, since the MSB key can manipulate the ringing or non-
ringing of multiple appearance DNs.