User`s guide

Dialogic
®
1000 and 2000 Media Gateway Series User’s Guide — September 2007 151
Dialogic Corporation
Dial Plan
5.1.3 Determining the Call Destination
The dial plan uses four tables configured by the user to determine the final destination.
• The "Channel Pool" table creates a logical grouping of interfaces and channels that define the
physical interface for the TDM side of the call.
• The "CPID Manipulation" table is used to create a set of formulae used to establish the calling,
called, and redirect numbers for the destination call.
• The "Inbound VoIP Call Routing" table provides a set of rules used to determine the route of
incoming VoIP calls.
• The "Inbound TDM Call Routing" table provides a set of rules used to determine the route of
incoming TDM calls.
As a call enters the gateway, the incoming characteristics of the call are matched against the dial
plan rules in the appropriate routing table from top down. If a match is found, the CPID
information is updated based on the CPID manipulation entry in the table assigned to the matched
rule. The call is then sent to the destination assigned in the table. Figure 18 below shows call
routing flow for dial plan.
Figure 18. Dial Plan Call Routing Flow
If no match is found, the call is not routed by the dial plan.
Do incoming call
caracteristics
match the rule?
Incoming Call
Get next rule in table
Are there any
more rules in the
table?
no
yes
no
Do Not route call
yes
Apply CPID
manipulation
Route Call