Network Ring Again - Nortel Meridian 1 Option 11C Compact Features Manual

Page 34 of 38 Feature Implementation

Network Ring Again

P0884766 June 1998
Network Ring Again operates on stations called over the ISDN PRI network.
The Network Ring Again feature allows a caller on station "A" encountering
a busy signal at station "B" to be notified when the busy station "B" becomes
available. This feature works on calls placed anywhere in the ISDN network.
When user "A" accepts the "not busy" recall, a normal call setup is then
placed to destination "B" without user "A" re-dialing the called number.
Figure 1 illustrates this situation.
Figure 1
Network Ring Again
Station A
Network Ring Again (NRAG) can be originated by a station in the Make Set
Busy mode, and is also allowed to be activated against a station in the Make
Set Busy Mode.
Network Ring Again is supported in UDP and CDP networks. Network Ring
Again is only supported if the originating set sends for CLID.
Please note that NRAG does not operate on redirected calls. NRAG requires
that every switch in the network be equipped with either NARS or CDP
software.
Option 11E
PRI/ISL
Call placed to busy set
'Busy' notification returned
NRAG placed
'Not Busy' notification sent
Call placed and completed
Option 11E
Station B