# COS for Call Placement

This section covers specifics applicable only to call placement. Remember that you must set the outdial indexes and the call placement pager access type parameters in the user’s mailbox configuration to enable call placement.

## Features COS

You must customize an FCOS to give a mailbox its call placement features and limits.

To use call placement, you must add feature bit 110 (Give/make to telephone number) to an existing FCOS or create a new one with this feature in it.

## Limits COS

The limits listed in the table below control call placement. You might need to change the LCOS assigned to the call placement mailbox configuration accordingly.

Limit | Unit | Default | Valid Values
--- | --- | --- | ---
Ring No Answer retry limit | no. of retries | 10 | 1-255
Ring No Answer retry interval | minutes | 60 | 1-255
Busy retry limit | no. of retries | 10 | 1-255
Busy retry interval | minutes | 10 | 1-255
Phone length | digits | 7 | 3–11
Recipient Count | no. of recipients | 190 | 1–190
Max Msg Length | minutes | 5 | 0–60

## Ring No Answer (RNA) Retry Limit

This limit determines the maximum number of times the server redials a call placement phone number when no one answers the phone on the first delivery attempt.

## RNA Retry Interval

This limit determines how often the server redials a call placement phone number when no one answers the phone on the first delivery attempt.

## Busy Retry Limit

This limit determines the maximum number of times the server redials a call placement phone number when the server detects a busy signal on the first delivery attempt.

## Busy Retry Interval

This limit determines how often the server redials a call placement phone number when the server detects a busy signal on the first delivery attempt

## Message Phone Length

This limit determines the maximum number of digits users can enter for a call placement phone number. Setting this limit higher accommodates long-distance calls.

## Recipient Count

This is the maximum number telephone numbers you can enter at any one time, for a single message. This includes both call placement, and AMIS messages.

## Maximum Message Length

The length determines the maximum size of a single message made for a call placement phone number.

If you send a message to both mailboxes and telephone numbers, this limit interacts with the limit on the size of messages sent to mailboxes; the shorter of the two limits overrides the longer. For instance, if you limit messages sent to mailboxes to a maximum of five minutes and limit call placement messages to two minutes, the server enforces the two-minute limit for both kinds of messages.

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

Parent topic: Class of Service Configuration