Polycom VS4000 User Manual

Page of 150
Chapter 3 - Before You Deploy
© Polycom, Inc.
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If your organization has special rate plans, those should be 
incorporated into the least-cost routing tables.
Network Topology
You will need the network topology information described in 
 when you design your dial 
plan and configure PathNavigator to manage your video network.
If the network is physically changed, you will need to update 
PathNavigator’s network information so that it can manage the 
video network effectively.
PathNavigator provides the means for you to assign ISDN numbers 
to endpoints. The way numbers are assigned depends on your 
network:
E.164 provisioning
 — Choose E.164 provisioning if you are 
using private numbers.
ISDN alias assignment
 — If you assign ISDN numbers to 
endpoints, then the ISDN ranges need to be provided to the 
gatekeeper. These numbers must be coordinated with your local 
ISDN provider as these numbers cannot be self-populated. 
Assigning numbers that are not in your domain will result in 
failed calls when users outside the organization try to access 
users within the organization with self-populated numbers. 
Automatically assigned numbers —
 PathNavigator can 
automatically assign direct inward dial (DID) numbers or 
gateway extensions. You cannot automatically assign both 
types of numbers on the same network.
Neighbor gatekeepers
Neighbor gatekeepers allow for the distribution of the workload 
across logical boundaries within the organization. This enables 
more efficient use of the network by limiting communication across 
WAN links. When a call originates in one gatekeeper’s zone and that 
gatekeeper is unable to resolve the dialed address, it will be 
forwarded to the neighbor gatekeepers for resolution.