Description; Defined Values; Keytone-Play Local Dtmf Key Tone; Command Syntax - Huawei MU509 At Command Interface Specification

HUAWEI MU509 HSDPA LGA Module
AT Command Interface Specification

11.8.2 Description

This command is used to switch the echo canceller mode before a voice call.
The TEST command returns supported values as compound value.

11.8.3 Defined Values

<n>:
0: Close the echo canceller
1: Handset mode, mild echo, short delay (less than 16ms dispersion)
2: Headset mode, moderate echo, short delay (less than 16ms dispersion)
3: Carkit mode, loud echo, long delay (up to 64 ms dispersion)
4: Speakerphone mode, loud echo, long delay (default value)
5: Bluetooth headset mode, there is a lot of delay in the Bluetooth air interface,
definitely can‟t be used for non-Bluetooth modes.
Resetting the module will not affect the value. Module updating will reset the value to
default value.
11.9 ^KEYTONE–Play Local DTMF Key Tone

11.9.1 Command Syntax

Command
^KEYTONE=<key>[,<d
uration>]
^KEYTONE=?
11.9.2 Description
This command is used to play the DTMF key tone local.
The TEST command returns supported values as compound value.
11.9.3 Defined Values
<key>: ASCII character in the set 0–9, #, *, A, B, C, D.
<duration>: 0 ms–1000 ms. Integer type value with manufacturer specific range. Time
of the tone wil play. 0 means no stop (input this command with none 0 duration can
abort).
Issue 04 (2013-01-28)
Possible response(s)
<CR><LF>OK<CR><LF>
In case of error:
<CR><LF>ERROR<CR><LF>
<CR><LF>^KEYTONE: (list of supported
<key>s)<CR><LF><CR><LF>OK<CR><LF>
Huawei Proprietary and Confidential
Copyright © Huawei Technologies Co., Ltd.
Audio Commands
161