# COS for Message Delivery

This section covers specifics applicable only to message delivery. Remember that you must set the Message Delivery parameter to Yes in the mailbox owner’s mailbox configuration to enable message delivery.

## Features COS

You must customize an FCOS to give a mailbox its message delivery features and limits.

The feature bits listed in the table below control message delivery:

Feature Bit | Function
--- | ---
070 | User Options Menu
079 | Set message wait # 1 for urgent messages only
080 | Set message wait # 2 for urgent messages only
094 | Enable message delivery; change message delivery options
143 | Change message delivery phone number
168 | Message wait 1, pager requeue
169 | Message wait 2, pager requeue
181 | Paging over message delivery, message waiting 1 over message waiting 2
182 | Use pri/alt as week/weekend for message waiting type 1
183 | Use pri/alt as week/weekend for message waiting type 2

## Change Weekday/Weekend Schedule

Message delivery users can set schedules for weekdays or weekends , showing when they can be reached.

To change a message delivery schedule, a user’s mailbox must have an FCOS that includes feature bit 094 (Enable message delivery; change message delivery options). To change a message delivery number, a user’s mailbox must have an FCOS that includes bit 143 (Change message delivery phone number). Both these feature bits require bit 070 (User Options Menu) to work.

## Pager Re-Queue

The pager re-queue functionality is activated by feature bit 168 for schedule one and bit 169 for schedule two. If you have message delivery scheduled from 9 a.m. to 5 p.m. and receive a call at midnight, the server does not automatically call you at 9 a.m., and does not call you until another message arrives during the scheduled time period. With this feature, the server calls you at the beginning of the next scheduled message delivery start time.

For more information about FCOS and feature bits, see the Features Class of Service section.

## Limits COS

Only one limit applies to message delivery, the Message Delivery-Phone Length limit. It controls user modification of message delivery. The message delivery phone lengths determine the maximum number of digits users can enter for a message delivery number. The default is 7, the allowable range is 3 to 11 digits. The limit is useful for preventing long-distance calls.

For more information about LCOS and limits, see the Other Classes of Service section.