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Chapter 4 – Call Control Commands

Multi-Tech Systems, Inc. CDMA AT Commands Reference Guide (PN S000294K) 28

Side Tone Modification +SIDET

Description: This command is used to set the level of audio feedback in the speaker (microphone feedback in the

speaker).

Values: <val1>

0 Sidetone is disabled

1 Sidetone is enabled

<val2>

0 No side tone

1 Handset Sidetone levels

2 Headset Sidetone levels

3 Max Sidetone level

Syntax: Command syntax: AT+SIDET=<val1>,<val2>

Command Possible Responses

AT+SIDET=1,0 OK

Note: Command valid

AT+SIDET?

Note: Current value

+SIDET: 1,0

Note: Command valid

Initialize Voice Parameters +VIP

Description: This command allows voice parameters to be restored from NV memory.

Values: Gain controls are restored (+VGT and +VGR)

Voice path selection is restored (+SPEAKER)

Echo cancellation is restored (+ECHO)

Sidetone values are restored (+SIDET)

Syntax: Command syntax: AT+VIP

Command Possible Responses

AT+VIP OK

Note: Command valid

TTY Mode +WTTY

Description: This command enables TTY mode on the headset audio path. The modem must be in a voice call to set this

command, and when the call ends it goes back to standard audio mode.

Syntax: Command syntax: AT+WTTY

Command Possible Responses

AT+WTTY OK

Note: Command valid

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Multitech MTCBA-C-U Especificaciones Pagina 28