Ip Resources; Expanded System Capacity - Mitel Inter-Tel 5000 Installation And Maintenance Manual

IP Resources

On an Inter-Tel 5000 platform, IP resources are required for the following communication
devices and services:
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IP resources are dynamically allocated where needed, which allows oversubscription. However,
resources can be reserved if necessary. For details, see Oversubscription, below.
IP Resources Defined
An Internet Protocol (IP) resource is a quantity of processing power that digital signal
processors (DSPs) on the system use for call processing functions. In terms of processing
power consumed, the "cost" of a DSP function varies, depending on whether the DSP resides
on the Processor Module (PM-1) or on the Processor Expansion Card (PEC-1) in the Base
Server. IP resources are used for DSP processing of speech vocoder and Caller ID functions.

Expanded System Capacity

To achieve greater system capacity, a new installation of v2.0 or later uses G.711 as the default
vocoder instead of G.729, which is used in v1.x software. Upgraded systems retain their
previous configurations.
Inter-Tel recommends that you re-evaluate the use of vocoders in call configurations after
upgrading a customer's system to v2.0 or later. To improve voice quality and expand capacity,
you should use G.711 for internal IP endpoints and G.729 for external IP endpoints.
Oversubscription
Oversubscription allows you to program more endpoints than there are IP resources available
on the Inter-Tel 5000 platform. This capability is useful for systems that support numerous IP
endpoints and IP trunks and that utilize IP networking. The ability to oversubscribe results from
the following interrelated factors in a Inter-Tel 5000 v2.0 or later platform:
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Inter-Tel 5000 Installation Manual – Issue 2.4, May 2008
IP endpoints
IP network connections
Faxing between Inter-Tel 5000 nodes through Inter-Tel private networking over IP
IP resources are required only for call-related activities, which allows the unreserved
resources to be pooled and shared for general use.
IP resources are not reserved when an IP endpoint comes online, as was the case with
earlier Inter-Tel 5000 software versions. Dynamic allocation of IP resources is the only
method available for allocation. You can no longer allocate IP resources statically in DB
Programming. However, in oversubscribed systems, you can use the Resource
Reservation tool to dedicate resources for specific IP devices. For details, refer to the
Inter-Tel 5000 Features and Programming Guide (part no. 580.8006).
The Resource Reservation tool allows you to reserve, or allocate, IP resources for only the
highest priority requirements. By default, IP resources are reserved for Emergency/911
access. However, in some configurations, additional resources may be required to
accommodate IP gateways and/or IP trunks in order to reach an Emergency/911 operator.
Otherwise, a customer may want to reserve a limited number of IP resources for additional
high-priority functions such as IP networking or BVM. In the more effective scenarios,
however, the majority of IP resources would be kept available to be shared as needed. For
programming details, refer to the Inter-Tel 5000 Features and Programming Guide (part
no. 580.8006).
Chapter 3: Product Description
IP Resources
Page 3-19