Lucent Technologies Release 4.0 Capacity and Sizing, Voice Ports, DEFINITY AUDIX System Release

DEFINITY AUDIX System Release 4.0

System Description Pocket Reference 585-300-214

Capacity and Sizing

Voice Ports

Chapter 3 — Capacity and Sizing

Lucent Technologies configures the DEFINITY AUDIX system’s capacity according to the customer’s requirements for the system’s resources.

Customers are divided into two categories of system use:

■Basic usage customers use the DEFINITY AUDIX system mainly for call coverage.

■Advanced usage customers use the system to create and send messages in addition to call coverage.

Whether customers use the system for call coverage or voice mail, their requirements for system resources can be divided into five additional categories—light, medium, heavy, very heavy, and extremely heavy. The values of two variables broadly determine customers’ system requirements:

■Minutes of voice port use per subscriber per day

■Minutes of voice storage required for each subscriber

Table 3-1 shows the categories of users and their average requirements for voice ports and voice storage.

Table 3-1. Average System Requirements per Subscriber

	Daily voice port	Basic voice storage	Advanced voice
	usage (Minutes)	(Minutes)	storage (Minutes)
Light	2	1.3	2.0
Medium	4	1.9	2.8
Heavy	6	2.3	3.4
Very heavy	8	2.6	3.9
Extremely heavy	10	3.0	4.5

Issue 1 May 1999

3-1

Voice Ports

Lucent Technologies configures voice ports for the DEFINITY AUDIX system in two-port increments. Customers can purchase four, six, or eight voice ports with Digital Networking, or up to12 voice ports without Digital Networking. Lucent Technologies ships the system with four voice ports unless the customer orders additional ports.

The DEFINITY AUDIX system’s voice port capacity is measured in Erlangs. An Erlang is a mathematical representation of one busy port. The number of Erlangs a system can carry equals the average number of ports in use. The number of Erlangs the system can carry will vary according to its Grade of Service (GOS).