Calculating Digitone Receiver Requirements - Meridian Nortel 1 Option 11C Technical Reference Manual

Calculating Digitone receiver requirements

The NTDK20 SSC card and the NTDK97 MSC card meet all DTR
requirements. DTR provisioning methods are provided below for exceptional
cases requiring extra DTR capacity.
The Option 11C system has 50 universal card slots when four expansion
cabinets are equipped. The maximum possible number of lines is therefore:
50 cards x 16 units/card = 800 lines
Reference Tables 24 through Table 27 are based on models of traffic
environments and can be used to determine DTR needs in most cases.
When the system being provisioned does not fall within the bounds of these
models or is equipped with any special features, the detailed calculations
must be performed for each feature. The number of DTRs must accommodate
the highest result.
Some special features are:
• Authorization Code
• Centralized Attendant Service (CAS)
• Charge Account for Call Detail Recording (CDR)
• Direct Inward System Access (DISA)
• Integrated Messaging System Link
From the appropriate reference table (Tables 24 through Table 27), determine
the number of DTRs required and the DTR load for cutover, two-year, and
five-year intervals. Record this information in Worksheet B on "Worksheet
B: Total load" on page 137.
The following models are based on some common PBX traffic
measurements.
Option 11C and 11C Mini
Provisioning Page 99 of 544
Technical Reference Guide