SIM800 datasheet(158/380 Pages) SIMCOM

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Smart Machine Smart Decision

SIM800 Series_AT Command Manual_V1.09

158

2015-08-03

GSM850_PCS_MODE

EGSM_PCS_MODE

ALL_BAND

Parameter Saving

Mode

AUTO_SAVE

Max

Response

Time

Reference

Note



Radio settings are stored in non-volatile memory.



The value of parameter <op_band> is different among SIM800 series

project, please refer to chapter 21 for details.

6.2.18 AT+CHF

Configure Hands Free Operation

AT+CHF

Configure Hands Free Operation

Response

+CHF: (list of supported <ind>s),(list of supported <state>s)

Test Command

AT+CHF=?

Parameters

See Write Command

Response

+CHF: <ind>,<state>

Read Command

AT+CHF?

Parameters

See Write Command

Response

ERROR

If error is related to ME functionality:

+CME ERROR: <err>

Unsolicited Result Code

+CHF: <state>

Write Command

AT+CHF=<ind>

[,<state>]

Parameters

<ind>

0 Unsolicited result code disabled

1 Unsolicited result code enabled

(non-volatile)

<state>

0 Main audio channel

Aux audio channel

Main audio channel hand free mode

Aux audio channel hand free mode

PCM channel

SIM800 Datasheet(PDF) 158 Page - SIMCom

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