Siemens MC55 사용자 설명서

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MC55_ATC_V01.05

Page 66 of 469

2/10/04

Confidential / Released

This command controls information about status changes via URC presentation of the MC55 or connected items,
e.g. battery charge level, signal quality, service availability, sound generation, indication of unread short mes-
sages, full SMS storage, call in progress or roaming activities. 
Use of this command is outdated since additional indications and functionality are available with 

.

 supports two ways to get the values related to indicators: 

• Query the current status of each indicator by using the read command 

?. It returns the status no

matter whether the indicator has been registered with the write command

=[

[,...]]].

• Evaluate one of the "

" URCs which the ME automatically sends to the application, whenever the value

of the associated indicator changes. 
The presentation of these URCs depends on two settings: 
- The indicators must be registered with the write command 

[,...]]]. By

default, all of them are registered when the ME is switched on. Any URC can be excluded if deregistered
with 

=0. 

- URC presentation must be enabled with 

.

Test Command

AT+CIND=?

Response(s)

+CIND: 

(

, list of supported 

s)[, (

, list of supported 

s)[, 

...]]

OK

Read Command

AT+CIND?

Response(s)

+CIND: 

[, ...]]

OK

ERROR

+CME ERROR: <err>

Write Command

AT+CIND=

[, ...]]

Response(s)

OK

ERROR

+CME ERROR: <err>