# Limits Class of Service - Overview

The Limits Class of Service (LCOS) consists of a set of limits parameters configured to a value of your choice. As the administrator, an LCOS is the best resource available to you to control the use of disk storage.

The LCOS assigned to a mailbox’s configuration controls the time and storage parameters associated with that mailbox. For example, the LCOS can control message-length and the total number of messages stored in a mailbox. You can also modify an LCOS to specify alternate language prompts.

Be aware that certain options interact within and between these Classes of Service; some options require other options, and some combinations of options conflict. In particular, the LCOS can affect how the FCOS functions. For example, if you allow a mailbox owner to make messages and then assign an LCOS that has a user message length of 0 seconds, the user cannot record a message.

## Pre-Programmed LCOS

LCOS 1 is pre-programmed. You can copy this LCOS and customize it as required. The LCOS parameters and their default settings for LCOS 1 are listed in LCOS Limits Parameters and Defaults. Up to 640 LCOS can be configured in this system; each can have different limits for all parameters in the Limits Parameters Menu.

## LCOS for the Administrator or Attendant Mailbox

For best results, assign the default LCOS (LCOS 1) to both the administrator’s and the attendant’s mailboxes. LCOS 1, with the appropriate FCOS and GCOS, supports the special functions for these mailboxes.

## Selecting Alternate Language Prompts

The default language for all line groups is English; all languages other than English are optional features.

You can modify a line group or LCOS so that users receive prompts in an alternate language. In addition, you can specify a second alternate language for line groups. This enables users to select between multiple languages (for example, English and French) when they call into the Message Center or NuPoint Receptionist application.

Before you can specify alternate languages for a line group or an LCOS, you must install the alternate-language prompt software.

If your server is running more than one language at the line group level (one or two per line group) and you want to control the line groups that callers reach, specify a prompts language for each LCOS. This process ensures that callers hear mailbox prompts in the correct language.