Multitech CDMA User's Guide download pdf (Page 51)

Chapter 13 – - Prefix Commands

CDMA 1xEV-D0 AT Commands Reference Guide (Document S000482B) 51

Chapter 13 – -Prefix

Commands

-DTMFB= DTMF Burst

Syntax: AT-DTMFB=<key1> [<key2>,<key3>,…]

Description: Generates a string of DTMF tones under the timings defined by -TONDUR (Tone

Duration). This command can be overridden by -TONMUT (Tone Mute). The values of

<key> can be any of 0–9, *, and #, up to a total of 32 keys. Spaces, quotes, brackets,

dashes, and commas are not permitted in the string.

-DTMFK= DTMF Key

Syntax: AT-DTMFK=<key>

Description: Generates a single key DTMF tone for the duration set by -TONDUR (Tone Duration). This

command can be overridden by -TONMUT (Tone Mute). The values of “key” can be any of

0–9, *, and #.

-ECHO= Echo Cancellation Level

Syntax: AT-ECHO=<n> (Sets Echo Cancellation Level)

AT-ECHO? (Queries Echo Cancellation Level)

Description: Sets and queries the environment for the echo cancellation profile. The modem has five

environments available.

The setting is stored in non-volatile memory.

Parm Meaning

0 Factory default (headset) (same as 3) (Default)

1 No echo cancellation

2 Handset

3 Headset

4 Acoustic (AEC)

5 Speaker-phone

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Multitech CDMA User's Guide Page 51