Sample Node Programming - Mitel Inter-Tel 5000 Installation And Maintenance Manual

To prevent circular or excessive routes, the system limits the number of "hops." A call or
communication can take up to 10 hops to other nodes. However, 2-3 hops maximum is
recommended. Using the example shown in Figure A-3 on
shows a call that makes three hops through intermediate nodes to reach a destination:
1.
2.
3.
4.
Figure A-4.
LOCAL
SERVICE
Trunk Grp 92001
NODE 1
NODE 4
Trunk Grp 92030
LOCAL
SERVICE
Determining in what order to list the Node Trunk Groups in a Node and when to use Linear or
Distributed search type depends on the system configuration and traffic.
®
Inter-Tel 5000 Installation Manual – Issue 2.4, May 2008
A call is placed from Node 1 to Node 4.
Node 1 attempts to route through Node Trunk Group 97502, but that route is not
available. Node 1 then routes the call using Node Trunk Group 97501 and uses Nodes 2
and 3 as intermediate nodes.
Because the network has already routed the call through Node 1, Node 2 will not use
Node Trunk Group 97501 and routes the call through its Node Trunk Group 97502.
Node 3 routes the call through its Node Trunk Group 97502 to Node 4. It will not use
97501 because the call came from Node 2.
Example Call Path Through Nodes
LONG DIST
SERVICE
Trunk Grp 92002
Node Trunk Grp 97501
Node Trunk Grp 97502
NOT AVAILABLE
Node Trunk Grp 97501
Node Trunk Grp 97502
Appendix A: Inter-Tel Private Networking

Sample Node Programming

page A-18, Figure A-4 on
LOCAL
SERVICE
Trunk Grp 92010
NODE 2
Node Trunk Grp 97501
Node Trunk Grp 97502
NODE 3
Node Trunk Grp 97502
Trunk Grp 92020
LONG DIST
SERVICE
page A-19
Node Trunk Grp 97501
Page A-19