Sony Ericsson TT4031 (SE-GM29) 11.15AT+CREGNetwork Registration

0Automatic (<oper> field is ignored)

1Short format alphanumeric <oper>

2Numeric <oper>

<oper> Description

string type	Format determined by the <format> setting

<stat> Description

0Unknown

1Available

2Current

3Forbidden

11.15AT+CREGNetwork Registration

Description

Command

Possible Responses

Request network	AT+CREG=[<n>]
registration
Read the command	AT+CREG?

Show if the command is AT+CREG=? supported

•_ +CME ERROR <err>

•_ OK

•_ ERROR

•_ +CREG: <n>,<stat>

•_ +CME ERROR <err>

•_ OK

•_ ERROR

•_ +CREG: (list of supported <n>s)

•_ +CME ERROR <err>

•_ OK

•_ ERROR

Set command controls the presentation of an unsolicited result code +CREG: <stat> when <n>=1 and there is a change in the ME network registration status.

Read command returns the status of result code presentation and an integer <stat>, which shows whether the network has currently indicated the registration of the ME.

Owner’s Manual

Rev 1.0

Page 171 of 171

Contents

Page Customer Service Notices, License, and Warranty Page Page Sony Ericsson Mobile Communications International First edition (April 2003) © Sony Ericsson Mobile Communications International Table of Content Page Page Page Page Page 1.Introduction 1.1Target Users 1.2Prerequisites 1.3Manual Structure Page 2.TT4031 (SE-GM29)Modem 2.1Description 2.2Highlights 2.3TT4031 (SE-GM29)in a Communication System Figure 2.2 The Interface between the modem and the Application 2.4Main Features and Services GSM network (for example, traffic reports). This feature is network dependent SMS STATUS REPORT according to GSM 03.40. SMS COMMAND according to GSM GPRS (General Packet Radio Service) CSD (Circuit Switched Data) Call forwarding Call hold, waiting and multiparty Calling/called number identification Advice of charge USSD setting up and controlling communications to and from the GSM network; configuring the modem to communicate across the RS232 serial interface; and obtaining GSM network status information RJ11 (plug-inpower supply connector) RJ9 (handset audio connector) 2.5Service and Support 3.Abbreviations Page Page 1.Mechanical Description 1.1Overview Page 1.2Physical Dimensions 2.Electrical Description 2.1Power Connector 2.2Audio Connector Compliance with AMR may be required by certain network operators 2.3Antenna Connector 2.4SIM Card Reader 2.5RS232 Serial Port Page 2.6Real Time Clock 2.7Software Updates 3.Operation 3.1Switching On the Modem 3.2Switching Off the Modem 3.3Resetting the Modem 3.4Operating States/LED 4.Safety and Product Care 4.1Safety Instructions 4.2General Precautions 4.3SIM Card Precautions CAUTION 4.4Antenna Precautions Page 5.Installation of the Modem 5.1Where to Install the Modem Tip 5.2How to Install the Modem 5.3OEM Labeling 5.4Antenna the VSWR value should be less than 3:1 to avoid damage to the modem Noise Path-loss Shadowing Multi-path fading 5.5Attachments 6.Technical Data Note! Power Down Mode: DC power is applied but the modem is switched OFF Page Page Page 7.FCC Certificate Page 1.Introduction to AT Commands 1.2Syntax Description Value AT+<command>= [<parameter>] AT*<command>=[<parameter>] AT+<command AT*<command AT<command <command General meaning 1.3Error Codes Page Page 1.4Examples on How to Use the AT Commands Call Control ATA Answer Incoming Call 2.3ATD Dial Page 2.4 ATH Hang up 2.5 ATO Return to Online Data Mode 2.6 ATP ATP Select Pulse Dialing ATT Select Tone Dialing 2.8 ATX Call Progress Monitoring Control 2.9AT+CHUP Hang up Call 2.10AT+CMOD Call Mode 2.11AT+CVHU Voice Hang-Up 2.12 AT+VTS DTMF and Tone Generation Control and Status 3.1 ATQ Result Code Suppression 3.2ATS0 Automatic Answer Control 3.3ATS2 Escape Sequence Character 3.4ATS3 Command Line Termination Character 3.5ATS4 Response Formatting Character 3.6ATS5 Command Line Editing Character (BACKSPACE) 3.7ATS6 Blind Dial Delay Control 3.8ATS7 Connection Completion Timeout ATS8 3.10 ATS10 ATS10 Automatic Disconnect Delay Control 3.11AT*ECAM Ericsson Call Monitoring 3.12AT*EDST Ericsson Daylight Saving Time 3.13AT*EMAR Ericsson Master Reset 3.14AT*EPEE Ericsson Pin Event 3.15AT+CCLK Set Clock and Date 3.16AT+CEER Extended Error Report 3.17AT+CFUN Set Phone Functionality 3.18AT+CIND Indicator Control 3.19AT+CLAC List all available AT Commands 3.20AT+CMEE Mobile Equipment Error 3.21AT+CMER Mobile Equipment Event Reporting 3.22AT+CPAS Phone Activity Status Page 3.23AT+CPIN PIN Control 3.24AT+CPWD Change Password Page 3.25 AT+CR AT+CR Service Reporting Control 3.26 AT+CRC Cellular Result Code 3.27AT+CSAS Save Settings 3.28AT+CSQ Signal Strength 3.29AT+CTZU Automatic Time Zone Update Page Audio 4.1AT*E2EAMSEricsson M2M Audio Profile Modification set a single parameter, given by its parameter number; Figure 4.1 Audio diagram of the CODEC Page Page Page 4.2AT*E2APR M2M Audio Profile Manipulation Copy all parameters from one profile into another 0 is the handset profile 1 is the portable handsfree profile 2 is the car kit profile Set a profile as the default profile on next power up 4.3 AT*EALR Ericsson Audio Line Request 4.4 AT*EAMS Ericsson Audio Mode Selection Page 4.5 AT*EARS Ericsson Audio Ring Signal 4.6 AT*ELAM Ericsson Local Audio Mode 4.7 AT*EMIC Ericsson Microphone Mode 4.8 AT*EMIR Ericsson Music Mute Indication Request 4.9 AT*EXVC Ericsson SET External Volume Control Page Data - CSD/HSCSD 5.1 AT+CBST Select Bearer Service Type 5.2 AT+CRLP Radio Link Protocol Page Page Data - GPRS 6.1AT+CGACT PDP Context Activate or Deactivate 6.2AT+CGATT GPRS Attach or Detach 6.3 AT+CGDATA Enter Data State 6.4AT+CGDCONT Define PDP Context Page 6.5 AT+CGEREP GPRS Event Reporting 6.6AT+CGPADDR Show PDP Address 6.7 AT+CGQMIN Quality of Service Profile (Minimum Acceptable) Page Page 6.8AT+CGQREQ Quality of Service Profile (Requested) Page 6.9AT+CGREG GPRS Network Registration Status Page 6.10 AT+CGSMS Select Service for MO SMS Messages Data - HSCSD 7.1 AT+CHSC HSCSD Current Call Parameters 7.2AT+CHSD HSCSD Device Parameters 7.3 AT+CHSN HSCSD Non Transparent Call Configuration 7.4AT+CHSR HSCSD Parameters Report For the value definitions, refer to AT+CHSC HSCSD Current Call Parameters 7.5 AT+CHSU HSCSD Automatic User Initiated Upgrading Fax 8.1AT*E2FAX Ericsson M2M Fax Comm. Baud Rate Modification 8.2Low Level Fax Commands Identification 9.1 AT Attention Command 9.2AT&F Set to Factory Defined Configuration 9.3AT&W Store User Profile 9.4 AT* List all Supported AT Commands 9.5 AT+CGMI Read MS Manufacturer Identification 9.6AT+CGMM Read MS Model Identification 9.7AT+CGMR Read MS Revision Identification 9.8 AT+CGSN Read MS Product Serial Number Identification 9.9 ATI ATI Identification Information 9.10AT+GCAP Request Modem Capabilities List Interface 10.1AT+CPIN PIN Control 10.2AT&C Circuit 109 (DCD) Control 10.3AT&D Circuit 108 (DTR) Response 10.4AT&S Circuit 107 (DSR) Response 10.5AT+WS46 Mode Selection 10.6ATE Command Echo 10.7ATV DCE Response Format 10.8ATZ Reset to Default Configuration 10.9AT+CMUX Switch to 07.10 Multiplex Protocol Page 10.10AT+CRESRestore SMS Settings 10.11 AT+ICF Cable Interface Character Format 10.12 AT+IFC DTE-DCELocal Flow Control 10.13AT+ILRR Cable Interface Local Rate Reporting 10.14 AT+IPR Cable Interface Port Command 10.15 AT*E2ESC M2M Escape Sequence Guard Time Network 11.1AT*E2CD Ericsson M2M Cell Description 11.2 AT*E2EMM Ericsson M2M Engineering Monitoring Mode Page AT*E2EMM=1 AT*E2EMM=3 AT*E2EMM=5 AT*E2EMM=7 Page Page 11.3AT*E2SPN M2M Service Provider Indication 11.4AT*EALS Ericsson Request ALS Status 11.5AT*ECSP Ericsson Customer Service Profile 11.6AT*EPNR Ericsson Read SIM Preferred Network 11.7AT*EPNW Ericsson Write SIM Preferred Network 11.8AT*E2SSN Ericsson M2M SIM Serial Number 11.9AT*ESLN Ericsson Set Line Name 11.10AT+CIMI Subscriber Identification 11.11AT+CLCK Facility Lock Page 11.12 AT+CNUM Subscriber Number Page 11.13AT+COLP Connected Line Identification Presentation 11.14AT+COPSOperator Selection 11.15AT+CREGNetwork Registration 11.16AT*ECPI Ciphering Indicator Page 11.17 AT*E2NBTS Ericsson M2M Neighbour BTS Page Phonebook 12.1 AT*E2PBCS Ericsson M2M Phonebook Check Sum 12.2AT*ESAG Ericsson Add to Group 12.3AT*ESCG Ericsson Create Group 12.4AT*ESCN Ericsson Set Credit Card Number Page 12.5AT*ESDG Ericsson Delete Group 12.6AT*ESDI Ericsson Delete Group Item 12.7AT*ESGR Ericsson Group Read 12.8AT*EGIR Ericsson Group Item Read 12.9AT*ESNU Ericsson Settings Number Page 12.10AT+CPBF Phonebook Find 12.11AT+CPBR Phonebook Read Page 12.12AT+CPBS Phone Storage 12.13 AT+CPBW Phonebook Write Page Short Message Services - Point to Point 13.1AT+CPIN PIN Control 13.2 AT+CGSMS 13.3AT+CPMS Preferred Message Storage Page 13.4AT+CSCA Service Centre Address 13.5AT+CMGF Message Format 13.6AT+CMGWWrite Message to Memory Preferred Message Storage NOTE! - SMS-COMMANDsand SMS-STATUS-REPORTscannot be stored in text mode 13.7AT+CMGS Send Message The DCD signal is in the ON state as PDU is given • The TA shall send a four character sequence The DCD signal is in the ON state as text is entered The entered text should be formatted as follows: Sending can be cancelled by giving <ESC> character (IRA 27) <ctrl-Z>(IRA 26) must be used to indicate the ending of the message body 13.8AT+CMSS Send From Storage 13.9 AT+CMGC Send Command Page Page 13.10AT+CNMINew Message Indications to TE Page Page Page 13.11 AT+CMGR Read Message Page Page Page Page Page 13.12 AT+CMGL List Message Page Page Page Page Page Page 13.13 AT+CMGD Delete Message 13.14 AT+CSDH Show Text Mode Parameters 13.15AT+CSMPSet Text Mode Parameters Page 13.16AT+CSCSSelect Character Set 13.17 AT+CSMS Select Message Service Page Short Message Services - Cell Broadcast 14.1AT+CNMI New Message Indications to TE 14.2AT+CSCB Select Cell Broadcast Message Type SIM Application Toolkit 15.1AT+CPIN PIN Control 15.2 AT*E2STKS SIM Application Toolkit Settings 15.3 AT*E2STKD M2M STK Display Text 15.4 AT*E2STKG M2M STK Get Inkey Page Page 15.5 AT*E2STKI M2M STK Get Input Page 15.6 AT*E2STKL M2M STK Select Item Page Page 15.7 AT*E2STKM M2M STK Set Up Menu Page 15.8 AT*E2STKN M2M STK Envelope (Menu Selection) 15.9 AT*E2STKC Page 15.10*E2STKE STK Send Short Message Page 15.11*E2STKP STK Send SS 15.12*E2STKU STK Send USSD 15.13*E2STKR STK Refresh 15.14AT*E2STKTO SIM Application Toolkit Settings Page Supplementary Services 16.1AT+CPIN PIN Control 16.2AT+CACM Accumulated Call Meter 16.3AT+CAMM Accumulated Call Meter Maximum 16.4AT+CAOC Advice of Charge Page 16.5AT+CPUC Price Per Unit and Currency Table 16.6 AT*EDIF Ericsson Divert Function 16.7 AT*EIPS Identity Presentation Set 16.8 AT*ELIN Ericsson Line Set 16.9AT*E2SSD M2M Supplementary Service Dispatch 16.10 AT*E2SSI M2M Supplementary Service Indications Page Page Page 16.11AT+CCFC Call Forwarding number and Conditions Page Page 16.12 AT+CCWA Call Waiting Page 16.13AT+CHLDCall Hold and Multiparty 16.14AT+CLIP Call Line Identification Presentation Page 16.15AT+CLIR Calling Line Identification Restriction 16.16AT+CSSNSupplementary Service Notification Page 16.17 AT+CUSD Unstructured Supplementary Service A USSD-requestsent with the command AT+CUSD from the external application Page Page Alphabetical Listing of AT Commands