Instruction manual

Page 1550 of 3156 Flexible Trunk to Trunk Connections
553-3001-306 Standard 10.00 January 2002
Referring to Figure 45, when the Flexible Trunk to Trunk Connections
Options is set to Flexible Trunk to Trunk Connections Trunk Barring (FTTB)
and the Class of Service of B is set to Flexible Trunk to Trunk Connections
Unrestricted (FTTU), all TBAR restrictions for Transfer and Conference are
lifted.
On a TBAR unrestricted trunk, B receives a call on incoming Trunk Route 1.
The call is established. B initiates a call with any of the Trunk Routes 2, 3, or
4.
When TBAR does not restrict connection from Trunk Route 1 to any other
trunk route:
• B can transfer the call on Trunk Route 1 to any of the Trunk Routes 2, 3,
or 4.
• B can conference the call on Trunk Route 1 with any of the Trunk Routes
2, 3, or 4.
On a TBAR restricted trunk, B receives a call on incoming Trunk Route 3.
The call is established. B initiates a call with any of the Trunk Routes 1, 2, or
4.
In this case, TBAR restricts connection from Trunk Route 3 to any other trunk
route. However, as B has CLS set to FTTU, the TBAR restriction is lifted for
B. Therefore:
• B can transfer the call on Trunk Route 3 to any of the Trunk Routes 1, 2,
or 4
• B can conference the call on Trunk Route 3 with any of the Trunk Routes
1, 2, or 4.
Referring to Figure 45, when the Flexible Trunk to Trunk Connections
Options (FTOP) is set to Flexible Trunk to Trunk Connections Trunk Barring
(FTTB) and the Class of Service of B is set to Flexible Trunk to Trunk
Connections Restricted (FTTR), the existing TBAR functionality is retained.
On a TBAR unrestricted trunk, B receives a call on incoming Trunk Route 1,
which is a TBAR unrestricted trunk. The call is established. B initiates a call
with any of the Trunk Routes 2, 3, or 4.