SIM800 datasheet(359/380 Pages) SIMCOM

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Smart Machine Smart Decision

SIM800 Series_AT Command Manual_V1.09

359

2015-08-03

Request the IMSI

AT+CIMI

460008184101641

20.4 Call Control Commands

Demonstration

Syntax

Expect Result

Make a voice call

ATD6241xxxx;

MS makes a voice call

Hang up a call

ATH

Call dropped

Make a voice call using the last number

facility. The initial call is established and

then cancelled. The second call is made

using the previous dial string.

ATD6241xxxx;

ATH

ATDL

Example of a MT voice call

Make MT voice call to MS.

ATA

ATH

RING

OK[accept call]

OK[hang up call]

Call related to supplementary service:

AT+CHLD. This Command provides

support for call waiting functionality.

AT+CHLD=<N>

Return

value:(0,1,1x,2,2x,3,4)

Terminate current call and accept waiting

call.

Establish a voice call from EVB, receive

an incoming call (incoming call accepts

waiting status), terminate active call and

accept incoming call. Note call waiting

must be active for this option – use

"AT+CCWA=1,1” before running this

demonstration.

AT+CCWA=1,1

ATD6241xxxx;

AT+CHLD=1

RING

+CCWA: "62418148 ",

129,1,""

Set current call to busy state and accept

waiting call.

Establish a voice call from EVB, receive

an incoming call (incoming call accepts

waiting status), place active call on hold

and switch to incoming call. Terminate

active call and switch back to original

call. Note call waiting must have been

previously

enabled

for

this

demonstration to work.

ATD6241xxxx;

AT+CHLD=2

AT+CHLD=1

RING

+CCWA: "1391818

6089",129,1,""

<waiting call active other

call on hold>

<incoming call terminated,

dialed number now active>

Switch between active and held calls.

Establish a voice call from EVB, receive

ATD6241xxxx;

RING

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