Instruction manual

Make Set Busy Improvement Page 1951 of 3156
Features and Services
Ringing Change Key
If Single Call Ringing (SCR) or Multiple Call Ringing (MCR) is changed to
non-ringing by Ringing Change Key (RCK) and all ringing sets have MSB
active, the sets ring immediately. If MSB is not active on all ringing sets, the
lamp flashes on the non-ringing SCR or MCR.
If the SCN or the MCN key is changed from non-ringing to ringing, SCN and
MCN lines are rung immediately. If one set is defined as ringing then a lamp
flashes at non-ringing sets.
Short buzz for Digital sets
If the MSB key is activated on a set, and there is an incoming call to another
SCN/MCN DN key on the same set, a buzzing (or short-buzzing) is applied
immediately.
Private Line Service
If the MSB key is active on all ringing appearances of a Private Line DN, the
Private Line non-ringing appearances of the same DN rings.
Feature packaging
The MSBI feature requires:
• The Make Set Busy (MSB) package 17.
If analog(500/2500 type) sets are used, these additional packages are
required:
• Background Terminal (BGD) package 99
• Flexible Features Codes (FFC) package 139
Feature implementation
Task summary list
The following is a summary of the tasks in this section:
1 LD 11 – Activate the MSBI feature and define Primary DN set (boss)
with non-ringing DN key.
2 LD 11 – Define another set (secretary) with ringing DN key and MSB
key.