Provisioning Page91 of 544
Option11C and 11C Mini TechnicalReference Guide
•Worksheet H: Battery current and AC line calculation for ACsystems
using NTAK75 and NTAK76 on page153
•Worksheet I: Battery current calculation for customer-provided DC
reserve power on page154
Introduction
This chapter outlines the procedures required to determine equipment
requirements.
Provisioning a new sys tem
The following summarizes the tasks required to provision a new system:
1Define and forecast growth (page91).
2Estimate CCS per terminal (page93).
3Calculate number of trunks required (page97).
4Calculate line, trunk, and console load (page98).
5Calculate DTR requirements (page99).
6Calculate total system load (page102).
7Calculate number of loops required (page102).
8Calculate number of IPE cards required (page103).
9Provision Conference/TDS loops (page108).
10 Calculate memory requirements (page110).
11 Assign equipment and prepare equipment summary (page110).
12 Calculatebattery backup time (page 110).
Defining and forecastin g growth
The first step in provisioning a new system is to forecast the number of
telephones required at two-year and five-year intervals.
The number of telephones required when the system is placed in service
(cutover) is determined by the customer. If the customer is unable to provide
a two-year and five-year growth forecast, then an estimate of annual
personnel growth in percent is used to estimate the number of telephones
required at the two-year and five-year intervals.