Instruction manual

Reference
INTER-TEL
®
5000 ADMINISTRATOR GUIDE – Issue 2.3, September 2007
Network Capacities
Page 303
Network Capacities
Two or more Inter-Tel Advanced Communications Platforms (Inter-Tel 5000 or Axxess) can be
connected to form a network that provides a seamless interface between the systems. To the
user, the network appears as one integrated system. With few exceptions, the user can perform
all of the functions across the network that can be performed within a single system.
In this guide, all references to a “network” mean two or more connected systems. Each system
in a network is called a node.
The maximum capacities for networking appear in Table 44.
* The maximum number of endpoints and trunks that can be installed is limited by the number
of voice channels and/or system memory resources available.
Near-End NAT Traversal for IP Endpoints
Near-end Network Address Translation (NAT) traversal for IP endpoints is a feature that
allows an Inter-Tel 5000 platform to be placed inside a NAT or firewall and still communicate
with IP endpoints outside the NAT/firewall. Near-end NAT traversal capability requires a sys-
tem administrator’s intervention to configure, through DB Programming, the endpoints requir-
ing NAT traversal. Each IP endpoint is configured for either the default Native IP address or
the system’s NAT IP address. This method is appropriate for IP endpoints located in a home
office or remote office.
The new Inter-Tel Model 8602 IP softphone introduces an IP endpoint that will likely need to
be moved from inside a NAT/firewall to outside the NAT/firewall and back again without
administrator intervention.
Automatic NAT Detection
Automatic NAT Detection introduced in v1.2 provides the capability to automatically deter-
mine whether an IP endpoint is inside the firewall or outside the firewall. In DB Programming,
the administrator can now designate each IP endpoint to use the Auto type, as well as either
Native or NAT types. The default selection is Auto. Automatic NAT detection is performed
each time an IP endpoint comes online and whenever the feature is set through DB Program-
ming.
For the Auto NAT Detection feature to function, the system must be running Call Processing
v1.2 or later.
Table 44.
System Network Capacities
Network Node or DEVICE CAPACITY
System Nodes per network 99
Local devices per node 304*
Off-node devices per node 10,000
Devices per network 40,000