Integrators' Reference Manual for For ViewStation EX, ViewStation FX, and VS4000

Chapter 3 - Before You Deploy
© Polycom, Inc. 59
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
LAN/WAN Considerations
on page 52 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.