Nortel Meridian Meridian 1 Feature Description And Administration page 1587

Figure 151
Results of anti-tromboning for Network Call Redirection (case 1), M1/DMS
Station C
Station A
Station C and A are bridged
3
at the DMS (the call is
sustained by the DMS)
1
Station C
answers call
Trunks released
Private
Exchange
or
C e n t r a l
O f f i c e
Anti-tromboning operation for Network Call Redirection (case 2),
Meridian 1 interworking with DMS
In Figure 152, another example is presented where TAT optimizes redundant
trunks due to a call forward. In this case, the trunks between a terminating
Meridian 1 node and tandem Meridian 1 node are optimized. The originating
node is a DMS-250. Station C is a centralized attendant or a Meridian Mail
position.
• Station A located at an originating switch (Public Central Office or
Private Exchange), makes an internodal call through a tandem DMS-250
and a tandem Meridian 1 node to Station B located at a terminating
Meridian 1 node (first call);
• Station B, located at the terminating Meridian 1 node, is call forwarded
to Station C located at the tandem Meridian 1 node (redirected call).
Station C is a centralized attendant or Meridian Mail position;
• Station C answers;
• Station A connects to Station C.
International ISDN PRI Feature description and administration
Trunk Anti-Tromboning
2
by RTL
DMS M1
Tandem Tandem
node node
Page 1587 of 1814
Trunks released
by TAT
Station B
M1
Terminating
node
553-7630.EPS