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SIM800 Series_AT Command Manual_V1.09

2015-08-03

Parameters

See Write Command

Response

TA controls whether or not the extended format of incoming call

indication is used.

Parameters

<mode>

0 Disable extended format

1 Enable extended format

Omitted Use previous value

Unsolicited Result Code

When enabled, an incoming call is indicated to the TE with unsolicited

result code +CRING: <type> instead of the normal RING.

Write Command

AT+CRC=[<mod

e>]

Parameters

<type>

ASYNC

Asynchronous transparent

SYNC

Synchronous transparent

REL ASYNC Asynchronous non-transparent

REL SYNC

Synchronous non-transparent

FAX

Facsimile

VOICE

Voice

Parameter Saving

Mode

NO_SAVE

Max

Response

Time

Reference

3GPP TS 27.007

[13]

Note

3.2.32 AT+CREG

Network Registration

AT+CREG

Network Registration

Response

+CREG: (list of supported <n>s)

Test Command

AT+CREG=?

Parameters

See Write Command

Read Command

AT+CREG?

Response

TA returns the status of result code presentation and an integer <stat>

which shows whether the network has currently indicated the registration

of the ME. Location information elements <lac> and <ci> are returned

only when <n>=2 and ME is registered in the network.

+CREG: <n>,<stat>[,<lac>,<ci>]

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