# ACU_TRANSFER_RQ

This topic describes:

- ACU_TRANSFER_RQ protocol variants

- ACU_TRANSFER_RQ macro descriptions and Q.931 IE

#### Purpose

Initiates the transfer of two calls. The first call is the call for which this message is sent, and the second call is identified by callid.

#### Conn_id

An allocated call.

## ACU_TRANSFER_RQ protocol variants

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

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 |  |  |  |  |  |  |  |  |  |  |  |  |  |
Acu_transfer_callid_present |  |  | TE | TE | TE |  |  |  |  |  |  | x | x |
Acu_transfer_callid |  |  | TE | TE | TE |  |  |  |  |  |  | x | x |
Acu_transfer_size |  |  | TE | TE | TE |  |  |  |  |  |  | x | x |

## ACU_TRANSFER_RQ macro descriptions and Q.931 IE

Macro | Description | Q.931 IE
--- | --- | ---
Acu_transfer_status | This field is ignored for this message. | Does not map to an IE.
Acu_transfer_callid_present | A value of 1 indicates that the callid field contains valid information. If this is true, the callid will represent the second call. If the callid field does not contain valid information, the second call will be implicitly chosen (if allowed by the protocol variant). | Does not map to an IE.
Acu_transfer_callid | Information used to identify a call. | Facility
Acu_transfer_size | The size of the structure. | Does not map to an IE.