페이지 선택
Generic selectors
Exact matches only
Search in title
Search in content
Search in pages
AT Commands For Call Control

 

Command Description
AT+CVHU Voice hang up control
AT+CHUP Hang up call
AT+CBST Select bearer service type
AT+CRLP Radio link protocol
AT+CR Service reporting control
AT+CRC Cellular result codes
AT+CLCC List current calls
AT+CEER Extended error report
AT+CCWA Call waiting
AT+CHLD Call related supplementary services
AT+CCFC Call forwarding number and conditions
AT+CLIP Calling line identification presentation
AT+CLIR Calling line identification restriction
AT+COLP Connected line identification presentation
AT+VTS DTMF and tone generation
AT+VTD Tone duration
AT+CSTA Select type of address
AT+CMOD Call mode

 

 

 

 

AT+CVHU      Voice Hang Up Control

Write command selects whether ATH or “drop DTR” shall cause a voice connection to be disconnected or not.

By voice connection is also meant alternating mode calls that are currently in voice mode.

 

T) AT+CVHU=?

Response

+CVHU: (list of supported <mode>s) OK

R) AT+CVHU?

Response

+CVHU: <mode> OK

 

 

W) AT+CVHU=<mode>

Response

a) If successfully:

OK

b) If failed:

ERROR

E) AT+CVHU

Response

OK

Maximum Response Time 120000ms

 

 

♦Parameter
Description
<mode>

0 – “Drop DTR” ignored but OK response given. ATH disconnects.

1 –  “Drop DTR” and ATH ignored but OK response given.

 

 

♦Example

AT+CVHU=0 OK

 

AT+CVHU?

+CVHU: 0 OK

 

 

 

AT+CHUP      Hang Up Call

This command is used to cancel voice calls. If there is no call, it will do nothing but OK response is given.

After running AT+CHUP, multiple “VOICE CALL END: ” may be reported which relies on how many calls exist before calling this command.

 

T) AT+CHUP=?

Response

OK

 

E) AT+CHUP

Response

VOICE CALL: END: <time>

[…

VOICE CALL: END: <time>] OK

 

No call:

OK

Maximum Response Time 120000ms

 

 

♦Parameter Description
<time>

Voice call connection time.

Format    –   HHMMSS (HH: hour, MM: minute, SS: second)

 

 

♦Example

AT+CHUP

VOICE CALL:END: 000017 OK

 

 

 

 

AT+CBST      Select Bearer Service Type

Write command selects the bearer service <name> with data rate <speed>,

and the connection element <ce> to be used when data calls are originated.

Values may also be used during mobile terminated data call setup, especially in case of single

numbering scheme calls.

 

 

 

T) AT+CBST=?

Response

+CBST: (list of supported <speed>s), (list of supported

<name>s), (list of supported <ce>s) OK

R) AT+CBST?

Response

+CBST: <speed>,<name>,<ce> OK

W) AT+CBST=<speed>[,<name>[<c e>]]

Response

a) If successfully:

OK

b) If failed:

ERROR

E) AT+CBST

Response

OK

Maximum Response Time 120000ms
 

 

♦Parameter
Description    
<speed>

0      –      autobauding(automatic selection of the speed; this    setting is possible in case of 3.1 kHz modem and non-transparent service)

7       –     9600 bps (V.32)

12     –     9600 bps (V.34)

14     –     14400 bps(V.34)

16     –     28800 bps(V.34)

17     –     33600 bps(V.34)

39     –     9600 bps(V.120)

43     –     14400 bps(V.120)

48     –     28800 bps(V.120)

51     –     56000 bps(V.120)

71     –     9600 bps(V.110)

75     –     14400 bps(V.110)

80     –     28800 bps(V.110 or X.31 flag stuffing)

81     –     38400 bps(V.110 or X.31 flag stuffing)

83     –     56000 bps(V.110 or X.31 flag stuffing)

84     –     64000 bps(X.31 flag stuffing)

116   –      64000 bps(bit transparent)

134   –      64000 bps(multimedia)

<name>

0 –  Asynchronous modem

1 – Synchronous modem

4 – data circuit asynchronous (RDI)

 
<ce>

0 – transparent

1 – non-transparent

 
NOTE: If <speed> is set to 116 or 134, it is necessary that <name> is equal to 1 and <ce> is equal to 0.    

 

 
♦Example

AT+CBST=0,0,1 OK

 

AT+CBST?

+CBST: 0,0,1 OK

 

 

 

 

AT+CRLP     Radio Link Protocol Link Protocol

Radio Link Protocol Link Protocol(RLP) parameters used when non-transparent data calls are originated may be altered with write command.

Read command returns current settings for each supported RLP version <verX>. Only RLP parameters applicable to the corresponding <verX> are returned.

Test command returns values supported by the TA as a compound value.

If ME/TA supports several RLP versions <verX>, the RLP parameter value ranges for each <verX> are returned in a separate line.

 

T) AT+CRLP=?

Response

+CRLP: (list of supported <iws>s), (list of supported

<mws>s), (list of supported <T1>s), (list of supported <N2>s) [,<ver1> [,(list of supported   <T4>s)]][<CR><LF>

+CRLP: (list of supported <iws>s), (list of supported

<mws>s), (list of supported <T1>s), (list of supported <N2>s) [,<ver2> [,(list of supported   <T4>s)]]

[…]]

OK

R) AT+CRLP?

Response

+CRLP:      <iws>,      <mws>,      <T1>,      <N2>      [,<ver1>      [,

<T4>]][<CR><LF>

+CRLP:<iws>,<mws>,<T1>,<N2>[,<ver2>[,<T4>]] […]]

OK

W) AT+CRLP=<iws> [,<mws>[,<T1>[,<N2> [,<ver>[,<T4>]]]]]

Response

a) If successfully:

OK

b) If failed:

ERROR

E) AT+CRLP

Response

OK

Maximum Response Time 120000ms

 

 

♦Parameter
Description
<ver>,<verX>

RLP version number in integer format, and it can be 0, 1 or 2;

when version indication is not present it shall equal 1.

<iws> IWF to MS window size.
<mws> MS to IWF window size.
<T1> Acknowledgement timer.
<N2> Retransmission attempts.
<T4> Re-sequencing period in integer format.
NOTE: <T1> and <T4> are in units of 10 ms

 

 

♦Example

 

AT+CRLP=0

+CRLP:61,61,48,6,0

+CRLP:61,61,48,6,1

+CRLP:240,240,52,6,2

OKs

 

 

 

 

AT+CR        Service Reporting Control

Write command controls whether or not intermediate result code “+CR: <serv>” is returned from the TA to the TE.

If enabled, the intermediate result code is transmitted at the point during connect negotiation at which the TA has determined which speed

and quality of service will be used, before any error control or data compression reports are transmitted,

and before the intermediate result code CONNECT is transmitted.

 

 

 

T) AT+CR=?

Response

+CR: (list of supported <mode>s) OK

R) AT+CR?

Response

+CR: <mode> OK

W) AT+CR=<mode>

Response

a) If successfully:

OK

b) If failed:

ERROR

E) AT+CR

Response

OK

Maximum Response Time 120000ms

 

 

♦Parameter
Description
<mode>

0 – disables reporting

1 – enables reporting

<serv>

ASYNC                asynchronous transparent

SYNC                   synchronous transparent

REL ASYNC         asynchronous non-transparent

REL sync             synchronous non-transparent

GPRS [<L2P>]    GPRS

The optional <L2P> proposes a layer 2 protocol to use between the MT and the TE.s

 

 

♦Example

 

AT+CR=1 OK

 

AT+CR?

+CR: 1

OK

 

 

 

 

AT+CRC     Cellurar Result Codes

Write command controls whether or not the extended format

of incoming call indication or GPRS network request

for PDP context activation is used.

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

“+CRING: <type>”

instead of the normal RING.

Test command returns values supported by the TA as a compound value.

 

T) AT+CRC=?

Response

+CRC: (list of supported <mode>s) OK

R) AT+CRC?

Response

+CRC: <mode> OK

W) AT+CRC=<mode>

Response

a) If successfully:

OK

b) If failed:

ERROR

E) AT+CRC

Response

OK

Maximum Response Time 120000ms
 

 

♦Parameter Description
<mode>

0  – disable extended format

1  – enable extended format

<type>

ASYNC                  asynchronous transparent

SYNC                    synchronous transparent

REL ASYNC           asynchronous non-transparent

REL SYNC             synchronous non-transparent

FAX                       facsimile

VOICE                   normal voice

VOICE/XXX          voice followed by data(XXX is ASYNC, SYNC, REL ASYNC or REL SYNC)

ALT VOICE/XXX    alternating voice/data, voice first

ALT XXX/VOICE    alternating voice/data, data first

ALT FAX/VOICE    alternating voice/fax, fax first

GPRS                    GPRS network request for PDP context activation

 

 

 

♦Examples

AT+CRC=1 OK

 

AT+CRC?

+CRC: 1 OK

 

 

 

 

 

AT+CLCC     List Current Calls

This command issued to return list of current calls of ME.

If command succeeds but no calls are available

, no information response is sent to TE.

 

 

T) AT+CLCC=?

Response

+CLCC: (list of supported <n>s) OK

R) AT+CLCC?

Response

+CLCC: <n> OK

W) AT+CLCC=<n>

Response

a) If successfully:

OK

b) If failed:

ERROR

  Response
  +CLCC:<id1>,<dir>,<stat>,<mode>,<mpty>[,<number>,<type>

Execution Command

AT+CLCC

[,<alpha>]][<CR><LF>

+CLCC:<id2>,<dir>,<stat>,<mode>,<mpty>[,<number>,<type> [,<alpha>]]

  […]]
  OK
Maximum Response Time 120000ms

 

 

♦Parameter Description    
<n>

0 – Don’t report a list of current calls of ME automatically when the current call status changes.

1 – Report a list of current calls of ME automatically when the

current call status changes.

<idX>

Integer type, call identification number, this number can be used in

+CHLD command operations.

<dir>

0 – mobile originated (MO) call

1 – mobile terminated (MT) call

   
<stat>

State of the call:

0 – active

1 – held

2 – dialing (MO call)

3 – alerting (MO call)

4 – incoming (MT call)

5 – waiting (MT call)

6 – disconnect

<mode>

bearer/teleservice:

0 – voice

1 – data

2 – fax

9 – unknown

<mpty>

0 – call is not one of multiparty (conference) call parties

1 – call is one of multiparty (conference) call parties

   
<number> String type phone number in format specified by <type>.
<type>

Type of address octet in integer format;

128 – Restricted number type includes unknown type and format

145 – International number type

161 – national number. The network support for this type is optional

177 – network specific number,ISDN format

129 – Otherwise

<alpha>

String type alphanumeric representation of <number> corresponding to the entry found in phonebook; used character set should be the one selected with command Select TE

Character Set AT+CSCS.

 

 

♦Examples

ATD10011; OK

AT+CLCC

+CLCC: 1,0,0,0,0,”10011″,129,”sm” OK

 

RING (with incoming call)

 

AT+CLCC

+CLCC: 1,1,4,0,0,”02152063113″,128,”gongsi” OK

 

 

 

 

AT+CEER     Extended Error Report

Execution command causes the TA to return the information text <report>

, which should offer the user of the TA an extended report of the reason for:

1 The failure in the last unsuccessful call setup(originating or answering) or in-call

2 The last call release.

3 The last unsuccessful GPRS attach or unsuccessful PDP context activation.

The last GPRS detach or PDP context deactivation.

 

 

T) AT+CEER=?

Response

OK

E) AT+CEER

Response

+CEER:<report> OK

Maximum Response Time 120000ms
 

  

♦Parameter Description
<report> Wrong information which is possibly occurred.

 

 

♦Examples

AT+CEER

+CEER: Invalid/incomplete number OK

 

 

 

 

AT+CCWA     Call Waiting

This command allows control of the Call Waiting supplementary service.

Activation, deactivation and status query are supported.

When querying the status of a network service (<mode>=2) the response line

for ‘not active’ case (<status>=0) should be returned only if service is not active for any <class>.

Parameter <n> is used to disable/enable the presentation of an unsolicited result code

+CCWA: <number>,<type>,<class> to the TE when call waiting service is enabled.

Command should be abortable when network is interrogated.

 

 

 

T) AT+CCWA=?

Response

+CCWA: (list of supported <n>s) OK

R) AT+CCWA?

Response

+CCWA: <n> OK

W) AT+CCWA=<n>[,<mode>[,<clas s>]]

Response

a) If successfully:

When <mode>=2 and command successful:

+CCWA:<status>,<class>[<CR><LF>

+CCWA: <status>, <class>[…]] OK

b) If failed:

ERROR

E) AT+CCWA

Response

OK

Maximum Response Time 120000ms

 

 

♦Parameter
Description
<n>

Sets/shows the result code presentation status in the TA

0       –    disable

1       –    enable

<mode>

When <mode> parameter is not given, network is not interrogated:

0       –    disable

1       –    enable

2       –    query status

<class>

It is a sum of integers each representing a class of information (default 7)

1              –    voice (telephony)

2              –    data (refers to all bearer services)

4              –    fax (facsimile services)

7              –    voice,data and fax(1+2+4)

8              –    short message service

16            –    data circuit sync

32            –    data circuit async

64            –    dedicated packet access

128          –    dedicated PAD access

255   –    The value 255 covers all classes

 

 

<status>

0       –    not active

1       –    active

<number>

String type phone number of calling address in format specified by

<type>.

<type>

Type of address octet in integer format;

128    –    Restricted number type includes unknown type and format

145    –   International number type

129   –    Otherwise

 

♦Example

AT+CCWA=?

+CCWA:(0-1) OK

 

AT+CCWA?

+CCWA: 0 OK

 

 

 

 

AT+CHLD     Call Related Supplementary Services

This command allows the control the following call related services:

  1. A call can be temporarily disconnected from the ME but the connection is retained by the network.
  2. Multiparty conversation (conference calls).
  3. The served subscriber who has two calls (one held and the other either active or alerting) can connect the other parties and release the served subscriber’s own

Calls can be put on hold, recovered, released, added to conversation, and transferred.

This is based on the GSM/UMTS supplementary services.

 

T) AT+CHLD=?

Response

OK

W) AT+CHLD=<n>

Response

OK

or

ERROR

E) AT+CHLD

Default to <n>=2.

Response

OK

or

ERROR

 

 

 

or

+CME ERROR: <err>

Parameter Saving Mode NO_SAVE
Maximum Response Time
Reference  

 

 

♦Parameter
Description
<n>

0           –    Terminate all held calls; or set User Determined User Busy for a waiting call

1           –    Terminate all active calls and accept the other call (waiting call or held call)

1X         –    Terminate a specific call X

2           –    Place all active calls on hold and accept the other call (waiting call or held call) as the active call

2X         –    Place all active calls except call X on hold

3           –   Add the held call to the active calls

4           –    Connect two calls and cut off the connection between users and them simultaneously

 

♦Example

AT+CHLD=?

+CHLD: (0,1,1x,2,2x,3,4) OK

 

 

 

AT+CCFC     Call Forwarding Number and Conditions

This command allows control of the call forwarding supplementary service.

Registration, erasure, activation, deactivation, and status query are supported.

 

T) AT+CCFC=?

Response

+CCFC: (list of supported <reason>s) OK

W) AT+CCFC=<reason>,<mode

>[,<number>[,<type>[,<clas s>[,<subaddr>[,<satype>[,<t ime> ]]]]]]

Response

When <mode>=2 and command successful:

+CCFC: <status>,<class1>[,<number>,<type> [,<subaddr>,<satype>[,<time>]]][<CR><LF>

+CCFC: <status>,<class2>[,<number>,<type> [,<subaddr>,<satype>[,<time>]]][…]]

OK

 

 

 

 

When <mode>!=2 and command successful:

OK

or

ERROR

or

+CME ERROR:<err>

Parameter Saving Mode NO_SAVE
Maximum Response Time
Reference  

 

 

♦Parameter
Description    
<reason>

0 – unconditional

1 – mobile busy

2 – no reply

3 – not reachable

4 – all call forwarding

5 – all conditional call forwarding

   
<mode>

0 – disable

1 – enable

2 – query status

3 – registration

4 – erasure

   
<number>

String type phone number of forwarding address in format specified by

<type>.

<type>

Type of address octet in integer format:

145   –    dialing string <number> includes international access code character ‘+’

129   –    otherwise

<subaddr>

String type sub address of format specified by <satype>.

Subaddr length is 0-19.

<satype> Type of sub address octet in integer format, default 128.
<classX>

It is a sum of integers each representing a class of information (default 7):

1              –    voice (telephony)

2              –    data (refers to all bearer services)

4              –    fax (facsimile services)

16            –   data circuit sync

32            –    data circuit async

64            –   dedicated packet access

128          –    dedicated PAD access

255          –    The value 255 covers all classes

<time>

1…30       –    when “no reply” is enabled or queried, this gives the time in

seconds to wait before call is forwarded, default value 20.

 

 

<status>

0       –    not active

1       –    active

 

♦Example

AT+CCFC=?

+CCFC: (0,1,2,3,4,5) OK

AT+CCFC=0,2

+CCFC: 0,255 OK

 

 

 

 

AT+CLIP     Calling Line Identification Presentation

This command refers to the GSM/UMTS supplementary service CLIP

(Calling Line Identification Presentation) that enables a called subscriber to get

the calling line identity (CLI) of the calling party

when receiving a mobile terminated call.

Write command enables or disables the presentation of the CLI at the TE.

It has no effect on the execution of the supplementary service CLIP in the network.

When the presentation of the CLI at the TE is enabled (and calling subscriber allows)

, +CLIP:

<number>,<type>,,[,[<alpha>][,<CLI validity>]] response is returned after every RING

(or +CRING: <type>; refer sub clause “Cellular result codes +CRC”)

result code sent from TA to TE.

It is manufacturer specific if this response is used when normal voice call is answered.

 

T) AT+CLIP=?

Response

+CLIP: (list of supported <n>s) OK

R) AT+CLIP?

Response

+CLIP: <n>,<m> OK

or

ERROR

or

+CME ERROR: <err>

W) AT+CLIP=<n>

Response

OK

or

ERROR

E) AT+CLIP

Response

Set default value(<n>=0):

OK

 

 

Parameter Saving Mode NO_SAVE
Maximum Response Time
Reference  

 

 

♦Parameter
Description
<n>

Parameter sets/shows the result code presentation status in the TA:

0       –    disable

1       –    enable

<m>

0       –    CLIP not provisioned

1       –    CLIP provisioned

2       –    unknown (e.g. no network, etc.)

<number>

String type phone number of calling address in format specified by

<type>

<type>

Type of address octet in integer format;

128   –    Restricted number type includes unknown type and format

145   –    International number type

161   –    national number.The network support for this type is optional

177   –    network specific number,ISDN format

129   –    Otherwise

<alpha>

String type alphanumeric representation of <number> corresponding

to the entry found in phone book.

<CLI validity>

0       –    CLI valid

1       –    CLI has been withheld by the originator

2        –    CLI is not available due to interworking problems or limitations of originating network

 

♦Example

AT+CLIP=1 OK

RING (with incoming call)

+CLIP: “02152063113”,128,,,”gongsi”,0

 

 

 

 

AT+CLIR     Calling Line Identification Restriction

This command refers to CLIR service that allows a calling subscriber to enable

or disable the presentation of the CLI to the called party when originating a call.

Write command overrides the CLIR subscription (default is restricted or allowed)

when temporary mode is provisioned as a default adjustment

for all following outgoing calls.

This adjustment can be revoked by using the opposite command..

If this command is used by a subscriber without provision of CLIR

in permanent mode the network will act.

Read command gives the default adjustment for all outgoing calls (given in <n>),

and also triggers an interrogation of the provision status of the CLIR service (given in <m>).

Test command returns values supported as a compound value.

 

T) AT+CLIR=?

Response

+CLIR: (list of supported <n>s) OK

R) AT+CLIR?

Response

+CLIR <n>,<m> OK

or

ERROR

or

+CME ERROR: <err>

W) AT+CLIR=<n>

Response

OK

or

ERROR

or

+CME ERROR: <err>

Parameter Saving Mode NO_SAVE
Maximum Response Time
Reference  

 

 

♦Parameter
Description      
<n>

0 –  presentation indicator is used according to the subscription of the CLIR service

1 – CLIR invocation

2 – CLIR suppression

     
<m> 0 – CLIR not provisioned    
  1 – CLIR provisioned in permanent mode    
  2 – unknown (e.g. no network, etc.)    
  3 – CLIR temporary mode presentation restricted    
  4 – CLIR temporary mode presentation allowed    
           

 

♦Example

AT+CLIR=?

+CLIR:(0-2) OK

 

 

 

 

AT+COLP     Connected Line Identification Presentation

This command refers to the GSM/UMTS supplementary service

COLP(Connected Line Identification Presentation)

that enables a calling subscriber to get the connected line identity (COL)

of the called party after setting up a mobile originated call.

The command enables or disables the presentation of the COL at the TE.

It has no effect on the execution of the supplementary service COLR in the network.

When enabled (and called subscriber allows), +COLP:<number>, <type>

[,<subaddr>, <satype> [,<alpha>]] intermediate result code is returned

from TA to TE before any +CR responses.

It is manufacturer specific if this response is used

when normal voice call is established.

When the AT+COLP=1 is set, any data input immediately after the launching

of “ATDXXX;” will stop the execution of the ATD command,

which may cancel the establishing of the call.

 

T) AT+COLP=?

Response

+COLP: (list of supported <n>s) OK

R) AT+COLP?

Response

+COLP: <n>,<m> OK

or ERROR

or

+CME ERROR: <err>

W) AT+COLP =<n>

Response

OK

or

ERROR

or

+CME ERROR: <err>

E) AT+COLP

Response

Set default value(<n>=0, <m>=0):

OK

Parameter Saving Mode NO_SAVE
Maximum Response Time
Reference  

 

 

♦Parameter
Description
<n>

Parameter sets/shows the result code presentation status in the TA:

0       –    disable

1       –    enable

<m>

0       –    COLP not provisioned

1       –    COLP provisioned

2       –    unknown (e.g. no network, etc.)

 

 

♦Example

AT+COLP?

+COLP: 1,0 OK ATD10086;

VOICE CALL: BEGIN

+COLP: “10086”,129,,, OK

 

 

5.2.15     AT+VTS   DTMF and tone generation

 

 

AT+VTS     DTMF and Tone Generation

This command allows the transmission of DTMF tones and arbitrary tones

which cause the Mobile Switching Center (MSC) to transmit tones to a remote subscriber.

The command can only be used in voice mode of operation (active voice call).

NOTE: The END event of voice call will terminate the transmission of tones, and as an operator option

, the tone may be ceased after a pre-determined time whether or not tone duration has been reached.

 

T) AT+VTS=?

Response

+VTS: (list of supported<dtmf>s) OK

W) AT+VTS=<dtmf> [,<duration>]

Response

OK

or

ERROR

AT+VTS=<dtmf-string>  
Parameter Saving Mode NO_SAVE
Maximum Response Time
Reference  

 

 

 

♦Parameter
Description
<dtmf> A single ASCII character in the set 0-9, *, #, A, B, C, D.
<duration>

Tone duration in 1/10 seconds, from 0 to 255. This is interpreted as a DTMF tone of different duration from that mandated by the AT+VTD command, otherwise, the duration which be set the AT+VTD

command will be used for the tone (<duration> is omitted).

<dtmf-string> A sequence of ASCII character in the set 0-9, *, #, A, B, C, D, and

 

 

 

maximal length of the string is 29. The string must be enclosed in double quotes (“”), and separated by commas between the ASCII characters (e.g. “1,3,5,7,9,*”). Each of the tones with a duration which

is set by the AT+VTD command.

 

NOTE

The value of <mode> shall be set to zero after a successfully completed alternating mode call.

It shall be set to zero also after a failed answering.

The power-on, factory and user resets shall also set the value to zero.

This reduces the possibility that alternating mode calls are originated or answered accidentally.

  

♦Example

AT+VTS=1 OK AT+VTS=1,20 OK

AT+VTS=”1,3,5” OK

AT+VTS=?

+VTS: (0-9,*,#,A,B,C,D) OK

 

 

 

 

AT+VTD     Tone Duration

This refers to an integer <n> that defines the length

of tones emitted as a result of the AT+VTS command.

A value different than zero causes a tone of duration <n>/10 seconds.

 

T) AT+VTD=?

Response

+VTD: (list of supported <n>s) OK

R) AT+VTD?

Response

+VTD: <n> OK

W) AT+VTD=<n>

Response

OK

Parameter Saving Mode NO_SAVE
Maximum Response Time
Reference  

 

 

♦Parameter
Description
<n>

Tone duration in integer format, from 0 to 255, and 0 is factory value.

0               Tone duration of every single tone is dependent on the network.

1…255   one duration of every single tone in 1/10 seconds.

 

 

♦Example

AT+VTD=?

+VTD: (0-255) OK

AT+VTD?

+VTD: 0 OK AT+VTD=5

OK

 

 

 

 

AT+CSTA     Select Type Of Address

Write command is used to select the type of number for further dialing commands (ATD)

according to GSM/UMTS specifications.

Read command returns the current type of number.

Test command returns values supported by the Module as a compound value.

 

 

T) AT+CSTA=?

Response

+CSTA:(list of supported <type>s) OK

R) AT+CSTA?

Response

+CSTA:<type> OK

W) AT+CSTA=<type>

Response

OK

or

ERROR

E) AT+CSTA

Response

OK

Parameter Saving Mode NO_SAVE
Maximum Response Time

 

 

 

 

 

♦Parameter
Description
<type>

Type of address octet in integer format:

145      –     when dialling string includes international access code character “+”

161   –    national number.The network support for this type is optional

177   –    network specific number,ISDN format

129   –    otherwise

 

NOTE

Because the type of address is automatically detected on the dial string of dialing command

, command AT+CSTA has really no effect.

 

♦Example

AT+CSTA?

+CSTA: 129 OK AT+CSTA=145

OK

 

 

 

 

AT+CMOD     Call Mode

Write command is used to select the type of number for further dialing commands (ATD)

according to GSM/UMTS specifications.

Read command returns the current type of number.

Test command returns values supported by the Module as a compound value.

 

 

T) AT+CMOD=?

Response

+CMOD: (list of supported <mode>s) OK

R) AT+CMOD?

Response

+CMOD: <mode> OK

W) AT+CMOD=<mode>

Response

OK

or

ERROR

 

 

E) AT+CMOD

Response

Set default value: OK

Parameter Saving Mode NO_SAVE
Maximum Response Time
Reference  

 

♦Parameter
Description
<mode> 0    –    single mode(only supported)

 

NOTE

The value of <mode> shall be set to zero after a successfully completed alternating mode call.

It shall be set to zero also after a failed The power-on, factory and user resets shall also set the value to zero.

This reduces the possibility that alternating mode calls are originated or

answered accidentally.

 

♦Example

AT+CMOD?

+CMOD: 0 OK AT+CMOD=0

OK

Adsense

EMW3070

Viewed Page List