user manual

HUAWEI MC509 CDMA LGA Module

AT Command Interface Specification

Call Control Commands

Issue 01 (2011-08-26)

Huawei Proprietary and Confidential

7.3.3 Parameter Description

<dial_string>: Specifies the called number, consisting of ASCII characters. Allowed

characters include only 0–9, *, #, and +. The + symbol can only be placed at the

beginning of a number. The maximum length of a number cannot exceed 65.

7.3.4 Example

AT+CDV13372311111

^ORIG:0,0

7.4 +CHV–Command for Disconnecting a Voice Call

7.4.1 Syntax

Command

Possible Response(s)

+CHV[<value>]

In case of an MT-related error:

<CR><LF>+CME ERROR:<err><CR><LF>

7.4.2 Interface Description

This command disconnects a voice call.

7.4.3 Parameter Description

<value>: An integer. The connection is interrupted and "OK" is returned only when

the value is 0. (The connection cannot be interrupted when the value is not 0, and the

response result is "ERROR".) If there is no voice connection, "OK" is returned.

In case of using the command without <value>, <value> is set to 0.

7.5 A–Command for Answering a Call A

7.5.1 Syntax

Command

Possible Response(s)