Instruction manual

SYSTEM PARAMETERS

Notes:

Digital data endpoints terminate on a port of the switch. Up to 800 ports can ter-

minate digital data endpoints. The remaining system ports are available for terminat-

ing digital voice terminals, trunks, etc.

For G3, the extensions are shared among the following applications: voice station,

attendant, data endpoint, hunt group, recorded announcement, TEG, VDN, extension

for failed automatic wakeup messages, attendant common shared extensions, code

calling ID, and phantom extensions. (For example, it is possible to have 1600 sta-

tions plus 1300 phantom extensions, that is, administration without hardware). In

addition, there is another internal dial plan limit: PCOL groups, common shared

extensions, access endpoints, code calling IDs, Listed Directory Numbers (LDNs),

hunt groups, announcements, and TEGs are limited to 860.

When more than 23 B-Channels for every one D-Channel are provisioned, Non-

Facility Associated Signaling (NFAS) must be used.

Trunks and access endpoints (see Data Parameters in Table C entries for more on

access endpoints) consume the same resource. The sum of trunks and access end-

points cannot exceed 400.

A fully equipped PPN cabinet and EPN cabinet without duplication (MCC system)

has 184 port circuit pack slots available (after tone detectors and expansion inter-

faces have been added in). A system using all these slots for digital line circuit packs

has a maximum physical digital line capacity of 1472 lines (184 slots x 8 ports per

slot). Replacing one of the digital line circuit packs with a trunk circuit pack or a cir-

cuit pack other than a digital line circuit pack reduces the digital line capacity by 8

lines. Therefore, trunking and analog and hybrid terminal requirements must be con-

sidered in determining the actual maximum for each system. When the second EPN

is added in a G3 system, 1600 digital terminals can be configured in the system.

A button module (function key module) is a portion of memory required to store but-

ton translations. Some digital voice terminals require no button modules while other

terminals need one or more modules. Digital voice terminal button module and

display requirements are given in the following table, ‘‘Station Allocation Characteris-

tics.’’ These button module and display requirements limit the number of digital voice

terminals with more than 10 feature buttons and/or displays that can be connected to

a system. In G3, memory units are allocated by the system to each terminal based

on the number of buttons actually translated. The button module scheme is no

longer used in G3. There are 547,000 memory units available in G3 for terminals.

The system automatically initiates phantom user calls without any dialing from a

voice terminal. An automatic wakeup call is an example of a phantom user call.