# ACU_CALLID_IN

This topic describes:

- ACU_CALLID_IN protocol variants

- ACU_CALLID_IN macro descriptions and Q.931 IE

#### Purpose

Delivers a callid or reports a failure to an application.

#### Conn_id

An allocated call. TE side only.

## ACU_CALLID_IN protocol variants

The following table lists the variants under which each macro is supported for this primitive. In this table, x indicates TE side only.

Macro | 4 E S S | E 1 0 | N I 2 | D M S | E T S I | V N 6 | H K G | A U S T E L 1 | N T T | K O R E A | T A I W A N | Q S I G | D P N S S | T 1 6 0 7
--- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | ---
Acu_transfer_status |  |  | x | x | x |  |  |  |  |  |  | x | x |
Acu_transfer_callid_present |  |  | x | x | x |  |  |  |  |  |  | x | x |
Acu_transfer_callid |  |  | x | x | x |  |  |  |  |  |  | x | x |
Acu_transfer_size |  |  | x | x | x |  |  |  |  |  |  | x | x |

## ACU_CALLID_IN macro descriptions and Q.931 IE

Macro | Description | Q.931 IE
--- | --- | ---
Acu_transfer_status | Type of result. A value of 0 indicates success; any other value indicates an error. | NA
Acu_transfer_callid_present | A value of 1 indicates that the callid field contains valid information. | NA
Acu_transfer_callid | Information used to identify a call. | NA
Acu_transfer_size | The size of the structure. | NA