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GE863
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Telit Wireless Solutions GE863 User Manual

GE863-GPS Software User Guide
GE863-GPS Software User Guide 1vv0300724 Rev. 2 - 24/01/07
GE863-GPS Software User Guide
1vv0300724 Rev. 2 - 24/01/07
Contents:
2.1 Command Syntax ...................................................................................................................................5
2.1.1 Interface Style...................................................................................................................................5
2.2 Command Response Timeout................................................................................................................6
2.3 Turning ON the GE863-GPS.................................................................................................................9
2.4 Turning OFF the GE863-GPS.............................................................................................................10
2.5 Checking GSM device functionality ...................................................................................................12
2.5.1 Autobauding...................................................................................................................................12
2.5.2 SIM presence checking...................................................................................................................13
2.5.3 Network checking...........................................................................................................................15
2.6 Placing a Voice call...............................................................................................................................21
2.6.1 Voice call device set up..................................................................................................................21
2.6.2 Phone number dialing.....................................................................................................................23
2.6.3 Closing the voice call .....................................................................................................................24
2.7 Placing a CSD Data call (not GPRS) ..................................................................................................25
2.7.1 Data call device set up....................................................................................................................25
2.7.2 Phone number dialing (data call)....................................................................................................26
2.7.3 Closing the Data call.......................................................................................................................27
2.8 Answer an incoming Call.....................................................................................................................28
3.1 Accessing the phonebook .....................................................................................................................30
3.1.1 Preliminary phonebook set up........................................................................................................30
3.1.2 Phonebook entry search by Name..................................................................................................33
3.1.3 Phonebook entry read by Index......................................................................................................34
3.1.4 Phonebook entry Write...................................................................................................................35
3.1.5 Phonebook entry Delete..................................................................................................................37
3.1.6 Phonebook entry Dial.....................................................................................................................38
3.2 Distinguish Calls...................................................................................................................................40
3.2.1 Identify the Call type......................................................................................................................40
3.2.2 Identify the Caller...........................................................................................................................41
3.2.3 Restricting Calling Line Indication ................................................................................................42
3.2.4 Call Barring Control.......................................................................................................................44
3.3 DTMF tones ..........................................................................................................................................51
3.4 GSM Power Saving function ...............................................................................................................52
3.5 SMS handling ........................................................................................................................................ 54
3.5.1 SMS device setup ...........................................................................................................................54
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3.5.2 IRA character set............................................................................................................................64
3.5.3 Writing a New SMS to storage.......................................................................................................66
3.5.4 Sending an SMS previously stored.................................................................................................67
3.5.5 Sending a new SMS without storing it...........................................................................................68
3.5.6 Deleting an SMS.............................................................................................................................69
3.5.7 Reading an SMS.............................................................................................................................70
3.5.8 Listing a group of SMSs.................................................................................................................72
3.6 Using General Purpose Input/Output pins.........................................................................................74
3.6.1 GPIO pin setup ...............................................................................................................................74
3.6.2 GPIO pin use ..................................................................................................................................76
3.7 Clock/Alarm function...........................................................................................................................81
3.7.1 Clock date/time...............................................................................................................................81
3.7.2 Alarm function................................................................................................................................83
4.1 Introduction ..........................................................................................................................................88
5.1 Introduction ..........................................................................................................................................91
5.2 GE863-GPS Serial Ports......................................................................................................................91
5.2.1 GPS SERIAL PORT A (SIRF BINARY) ......................................................................................91
5.2.2 GPS SERIAL PORT B (NMEA)....................................................................................................91
5.3 WGS 84 ..................................................................................................................................................92
5.4 NMEA 0183...........................................................................................................................................93
5.4.1 GGA - Global Positioning System Fixed Data ...............................................................................94
5.4.2 GLL - Geographic Position - Latitude/Longitude..........................................................................95
5.4.3 GSA - GNSS DOP and Active Satellites........................................................................................96
5.4.4 GSV - GNSS Satellites in View .....................................................................................................97
5.4.5 RMC - Recommended Minimum Specific GNSS Data .................................................................98
5.4.6 VTG - Course Over Ground and Ground Speed ............................................................................99
5.5 Checking GPS device functionality...................................................................................................100
5.5.1 Controlled mode...........................................................................................................................100
5.6 CONTROLLING GPS RECEIVER.................................................................................................101
5.6.1 POWER CONTROL OF GPS RECEIVER .................................................................................101
5.6.2 GPS RESET..................................................................................................................................102
5.6.3 GPS ANTENNA MANAGEMENT.............................................................................................103
5.6.4 GPS PARAMETERS SAVE........................................................................................................104
5.6.5 RESTORE GPS PARAMETERS.................................................................................................104
5.6.6 READ ACQUIRED GPS POSITION..........................................................................................104
6.1 Step-by-Step upgrade procedure ......................................................................................................106
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GE863-GPS Software User Guide
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1 Overview
The purpose of this document is the description of some common AT command procedures that may be used with the Telit GE863-GPS module. In this document, all the basic functions of a mobile phone will be taken into account and for each one of them, a proper command sequence will be suggested. In the Advanced operation section the more useful services and features of the GSM network supported by the Telit GE863-GPS module is taken into account and some command sequence and usage are provided for each one of them. This document and its suggested command sequences shall not be considered mandatory; instead, the information given shall be used as a guide for properly using the Telit module. For further commands and features that may not be explained in this document refer to the GE863-GPS Product Description document where all the supported AT commands are reported.
NOTE
The information presented in this document is believed to be accurate and reliable. However, Telit Communications S.p.A. assumes no responsibility for its use, nor any infringement of patents or other rights of third parties, which may result from its use. No license is granted by implication or otherwise under any patent rights of Telit Communications S.p.A. other than for circuitry embodied in Telit products. This document is subject to change without notice.
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2 Basic Operations

2.1 Command Syntax

In the next paragraphs the following notations are used:
<cr> represents the Carriage Return Character (13) <lf> represents the Line Feed Character (10) <xx> represents a parameter whatever name is in place of the xx. (< and > characters are
only for delimiting the parameter and must not be issued to the terminal).
[<xx>] represents an optional parameter whatever name is in place of the xx. ([ and ]
characters are only for delimiting the optional parameter and must not be issued to the terminal).

2.1.1 Interface Style

The GE863-GPS module is using an AT interface that is defined in the document 80000ST10025a (AT Commands Reference Guide). The specification defines 3 possible AT interfaces:
0 - AT command interface of the products, to the GM862-GSM and GM862-GPRS interface style 1 – AT interface of the products, to the GM862-PCS, PYTHON, QUAD-PY, TRIZIUM and GE863­QUAD, PY interface style 2 - switches the AT command interface style of the product, to the new products like GE864, GC864 and the GPS products
The default interface for the GE863-GPS product is 2. The switch between the different interfaces could also be performed with the #SELINT AT command.
Refer to the AT Commands Reference Guide for the full command description. All the AT commands described in this specification is related to SELINT 2
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2.2 Command Response Timeout

Every command issued to the Telit GE863-GPS returns a result response if response codes are enabled (default) (see command ATQn). The time needed to process the given command and return the response varies from command to command and may depend also from the network on which the command may interact. As a result every command is provided with a proper timeout time, if this time elapses without any result from the operation, then the ERROR response is reported as if the operation was not successful. The timeout time is quite short for commands that imply only internal set up commands, but may be very long for command that interact with the network (or even Networks).
NOTE: In case no response is received after the timeout time has been elapsed, then try repeating the last command and if still no response is received until the timeout time, then an Unconditional Shutdown MUST be issued and then the device shall be powered ON again.
In the table below are listed all the commands whose timeout differs from the default 100 ms and their effective timeout is reported:
Command Time-Out (Seconds)
+CBST 0.2 +CR 0.2 +CRC 0.2 +CRLP 0.2 +CSCS 0.2 +CEER 5 +CGMI 5 +CGMM 5 +CGMR 5 +CGSN 20 +CIMI 20 +CNUM 20 +CREG 5 +COPS 180 +CLCK 180 @CLCK 180 +CPWD 180 +CLIP 180 +CLIR 180 +CCFC 180 +CCWA 20 +CHLD 20 +CUSD 180 +CAOC 20 +CSSN 20
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Command Time-Out (Seconds)
+CLCC 20 +CPAS 5 +CPIN 20 +CSQ 5 +CPBS 5 +CPBR 20 +CPBF 20 +CPBW 20 +CALM 5 +CRSL 5 +CLVL 5 +CMUT 5 +CACM 20 +CAMM 20 +CPUC 20 +CMEE 5 +VTS 20 +GMI 5 +GMM 5 +GMR 5 +GSN 20 I3 5 I4 5 I5 5 +CSMS 5 +CPMS 5 +CMGF 5 +CSCA 20 +CSMP 5 +CSDH 5 +CSAS 5 +CRES 5 +CNMI 5 +CMGS 180 / 5 for prompt”>” +CMSS 180 +CMGW 5 / 5 for prompt”>” +CMGD 5 +CMGR 5 +CMGL 5 #CAP 10 #SRS 10 #SRP 10 #STM 10 #PCT 10
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Command Time-Out (Seconds)
#SHDN 10 #QTEMP 10 #SGPO 10 #GGPI 10 #MONI 10 #CGMI 5 #CGMM 5 #CGMR 5 #CGSN 20 #CIMI 5 +CGACT 180 +CGATT 180 +CGDATA 20 +CGDCONT 20 +CGPADDR 20 +CGQMIN 20 +CGQREQ 20
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2.3 Turning ON the GE863-GPS

To turn on the GE863-GPS the pin ON# must be tied low for at least 1 second and then released. A simple circuit to do it is:
ON#
Power ON impulse
GND
NOTE: don't use any pull up resistor on the ON# line. Using pull up resistor may bring to latch up problems on the GE863-GPS power regulator and improper power off of the module. The line ON# must be connected only in open collector configuration.
TIP: To check if power has raised it is possible to monitor the PWRMON line, when this line goes high the module is powered on, but before it remains on the device needs other 900 ms for software startup. Hence check the PWRMON line and 900 ms after its transition to high it is possible to release the ON# pin.
When turning on the module, both devices (GSM and GPS) will be started. The GPS antenna will be supplied and the receiver will start the scanning activity to achieve the Fix.
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2.4 Turning OFF the GE863-GPS

The turning off of the device can be done in two ways:
• • by software command by hardware shutdown
When the device is shut down by software command or by hardware shutdown, it issues to the network a detach request that informs the network that the device will not be reachable any more.

2.4.1.1 Software shutdown

• Send command
• wait for
The device shuts down with the following sequence of activities:
• Detach from the network
• Module Shutdown
In the case of Network unavailability the detach will be attempted few seconds (typical 6secs). After this timeout the module will be shut down.
OK response
AT#SHDN<cr>
2.4.1.2 Hardware shutdown
To turn OFF the GE863-GPS the pin ON# must be tied low for at least 2 second and then released. The same circuitry for the power on can be used. The device shuts down after the release of the ON# pin.
TIP: To check if the device has powered off, the hardware line PWRMON should be monitored. When it goes low, the device has powered off.
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2.4.1.3 Hardware Unconditional SHUTDOWN
To unconditionally SHUTDOWN the GE863-GPS the pin RESET# must be tied low for at least 200 milliseconds and then released. A simple circuit to do it is:
RESET#
Unconditional Power OFF impulse
GND
NOTE: don't use any pull up resistor on the RESET# line nor any totem pole digital output. Using pull up resistor may bring to latch up problems on the GE863-GPS power regulator and improper functioning of the module. The line RESET# must be connected only in open collector configuration.
TIP: The unconditional hardware RESET should be always implemented on the boards and software should use it as an emergency exit procedure.
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2.5 Checking GSM device functionality

After a proper power on the device is ready to receive AT commands on the serial port. Several things have to be checked in order to be sure that the device is ready to send and receive calls and SMS:

2.5.1 Autobauding

At startup it is necessary to send an AT command to make the device set the right speed and character format of the serial port. When this is done the device responds with OK. If no response is received within the timeout period of 200 ms retry.
• Send command
• wait for
after this initial command, it is advisable to fix the port rate, in order to eliminate possible errors in detecting the serial speed rate:
• Send command
• wait for
where rate is the port speed and can be 0, 300,1200,2400,4800,9600,19200,38400,57600,115200 bps.
If <rate> is set to 0, then automatic speed detection is enabled and also character format (see +ICF) is set to auto-detect. (default) If <rate> is specified and not 0, DTE-DCE speed is fixed at that speed, hence no speed auto-detection (autobauding) is enabled.
TIP: The serial port suggested setting is: port speed 38400, character format 8N1 (8 bit per char, No parity bit, 1 stop bit).
OK response
OK response
AT<cr>
AT+IPR=<rate><cr>
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2.5.2 SIM presence checking

After autobauding the first thing to check is the SIM presence and PIN code insertion, this can be done with the following commands:
2.5.2.1 Enable the Extended error result codes
• send command AT+CMEE=1<cr>
• wait for
or if you prefer the verbose format instead of the numerical format then:
• send command
• wait for
OK response
AT+CMEE=2<cr>
OK response
2.5.2.2 Query SIM presence and status
send command AT+CPIN?<cr>
•
wait for response:
•
Response Reason Action
+CPIN: SIM PIN SIM is present and PIN is
required to continue operations
+CPIN: SIM PUK SIM is present and 3 attempts
to give SIM PIN have failed, so SIM PUK is required
+CPIN: READY SIM is present and no PIN code
is required to proceed
+CME ERROR: 10 SIM not present Insert SIM or require SIM
+CME ERROR: 13 SIM defect Check SIM insertion or require
+CME ERROR: 14 SIM is busy retry later +CME ERROR: 15 SIM is wrong type Check SIM, it must be a GSM
Proceed to par. 2.5.2.3 Send command
AT+CPIN=<SIM PUK> Proceed ahead
insertion and repeat from par.
2.5.2.2 a new SIM not defected and
repeat from par. 2.5.2.2
SIM.
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2.5.2.3 Provide SIM PIN (only if required see point 2.5.2.2)
send command AT+CPIN=****<cr>
•
where **** stands for the SIM PIN code (e.g. 1234)
• wait for response:
Response Reason Action
OK SIM PIN was correct Proceed ahead ERROR the PIN code inserted is not
correct
NOTE: When receiving the ERROR message, repeat 3 failed attempts SIM PIN is not anymore requested, but SIM PUK is requested instead, hence you may need to go through procedure
2.5.2.4
Query SIM presence and status since after
Retry from par. 2.5.2.2
2.5.2.4 Provide SIM PUK (only if required see par. 2.5.2.2)
send command AT+CPIN=*******,<newpin><cr>
•
where ******* stands for the SIM PUK code (e.g. 12345678) and <newpin> (e.g. 1234) will replace the old pin in the SIM.
• wait for response:
Response Reason Action
OK SIM PUK was correct Proceed ahead ERROR the SIM PUK code inserted is
not correct
TIP: When receiving the ERROR message, be careful to check if the SIM PUK is correct before retrying, since after 10 failed attempts to provide the SIM PUK the SIM Card will lock and will not be usable anymore.
Retry from par. 2.5.2.4
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2.5.3 Network checking

2.5.3.1 Query network status
send command AT+CREG?<cr>
•
wait for response:
•
Response Reason Action
+CME ERROR: 10 SIM not present or damaged Check SIM or require SIM
insertion and repeat from par.
2.5.2.2
+CME ERROR: 11 SIM is present and PIN is
required to continue operations +CREG: 0,0 or +CREG: 1,0
+CREG: 0,1 or +CREG: 1,1 +CREG: 0,2 or +CREG: 1,2
+CREG: 0,3 or +CREG: 1,3
+CREG: 0,4 or +CREG: 1,4 +CREG: 0,5 or +CREG: 1,5
TIP: When a response +CREG: x,1 or +CREG: x,5 is received, then the device is ready to place and receive a call or SMS. It is possible to jump directly to call setup procedures or SMS sending procedures.
No GSM/DCS network is found Check for antenna cable
Mobile is registered on its home
network.
Mobile is currently not
registered on any network but is
looking for a suitable one to
register.
Mobile has found some
networks but it is not allowed to
register on any of them, no
roaming was allowed.
Mobile is in an unknown
network status
Mobile has found some
networks and is currently
registered in roaming on one of
them
Repeat par. 2.5.2.3
connection (antenna may be disconnected or damaged) or change position if the antenna is OK. Repeat par. 2.5.3.1 until a network is found. Proceed ahead. Ready to call
Repeat procedure at par.
2.5.3.1 to see if it has found a suitable network to register in.
Try in another place, and repeat procedure at par.2.5.3.1
Repeat procedure at par.2.5.3.1 to see if it has found a suitable network to register in Proceed ahead. Ready to call
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2.5.3.2 Network operator identification
Once the mobile has registered on some network (or even if it has returned +CREG:x,3), it is possible to query the mobile for network identifications codes an names:
• send command AT+COPS=?<cr>
wait for response in the format:
•
+COPS: [list of supported (<stat> ,<oper (in <format>=0)>,, <oper (in <format>=2)>)s][,,(list of supported <mode>s), (list of supported<format>s)]
where: <stat> - operator availability 0 - unknown 1 - available 2 - current 3 - forbidden
<format> 0 - alphanumeric long form (max length 16 digits) 2 - numeric 5 digits [country code (3) + network code (2)]
<oper>: network operator in format defined by <format> parameter. NOTE: since with this command a network scan is done, this command may require some seconds
before the output is given.
For example:
command:
AT+COPS=?<cr> Answer: +COPS: (2,"I WIND",,"22288"),(1,"SI MOBITEL GSM",,"29341"),(1,"vodafone IT",,"22 210"),(1,"SI.MOBIL",,"29340"),(3,"I TIM",,"22201"),,(0-4),(0,2)
OK In this case the mobile is registered on the network "I TIM" which is a network from Italy Nation code
:222 and Network ID: 01. There is also another network available for registration: "SI.MOBIL" which is a network from Slovenia Nation Code:293 and Network ID: 40. The other networks are not available for registration and are: "I-OMNITEL" from Italy Nation code :222 and Network ID: 10 - FORBIDDEN "SI-GSM " from Slovenia Nation Code:293 and Network ID: 41 - UNKNOWN
TIP: In this case a "I TIM" logo might be reproduced on the MMI to give the user the information that is registered on that network.
NOTE: this command issues a network request and it may require a quite long time to respond, since the device has to wait the answer from the network (it can be as long as 60 seconds). Hence don't use it if not needed.
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2.5.3.3 Check for received signal strength & quality
Once the mobile has registered on one network, it may be useful to know the received signal strength & quality to give the user an indication of the reliability of the network.
• send command AT+CSQ<cr>
wait for response in the format:
•
+CSQ: <rssi>,<ber> OK where:
<rssi> is an integer from 0 to 99 that indicates the received signal strength:
<rssi> value Signal strength Indication
0 -113 dBm or less Signal is VERY low: at the extreme sensibility limit 1 -111 dBm MMI may indicate only 1 antenna bar 2 -109 dBm MMI may indicate only 1 antenna bar 3 -107 dBm MMI may indicate only 1 antenna bar 4 -105 dBm MMI may indicate only 1 antenna bar 5 -103 dBm MMI may indicate only 1 antenna bar 6 -101 dBm MMI may indicate 2 antenna bars 7 -99 dBm MMI may indicate 2 antenna bars 8 -97 dBm MMI may indicate 2 antenna bars
9 -95 dBm MMI may indicate 2 antenna bars 10 -93 dBm MMI may indicate 3 antenna bars 11 -91 dBm MMI may indicate 3 antenna bars 12 -89 dBm MMI may indicate 3 antenna bars 13 -87 dBm MMI may indicate 3 antenna bars 14 -85 dBm MMI may indicate 3 antenna bars 15 -83 dBm MMI may indicate 4 antenna bars 16 -81 dBm MMI may indicate 4 antenna bars 17 -79 dBm MMI may indicate 4 antenna bars 18 -77 dBm MMI may indicate 4 antenna bars 19 -75 dBm MMI may indicate 4 antenna bars 20 -73 dBm MMI may indicate 4 antenna bars 21 -71 dBm MMI may indicate 4 antenna bars 22 -69 dBm MMI may indicate 4 antenna bars 23 -67 dBm MMI may indicate 4 antenna bars 24 -65 dBm MMI may indicate 4 antenna bars 25 -63 dBm MMI may indicate 4 antenna bars 26 -61 dBm MMI may indicate 4 antenna bars 27 -59 dBm MMI may indicate 4 antenna bars 28 -57 dBm MMI may indicate 4 antenna bars
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29 -55 dBm MMI may indicate 4 antenna bars 30 -53 dBm MMI may indicate 4 antenna bars 31 -51 dBm or more MMI may indicate 4 antenna bars 99 not detected MMI may indicate flashing antenna bars
NOTE: when <rssi> is less than 6, only 1 MMI antenna bar, the quality of a call will be poor and the call may even drop.
<ber> is an integer from 0 to 7 and 99 that reports the received signal quality measured on the radio
traffic channel.
NOTE: The quality is measured on the traffic channel, hence it is available only during a
conversation, in Idle the reported value must not be considered. In conversation the quality decreases with the increase of the <ber> number.
NOTE: The <ber> value refers strictly to the GSM radio channel and is a very technical parameter, it can be used to monitor the voice call quality since the voice quality is inversely proportional to the <ber> number.
NOTE: For Data calls the signal quality reported is not directly connected to the connection quality. The reported signal quality refers only to the GSM radio channel link and not to the whole path from the caller to the receiver, so it may happen that the quality on the GSM radio link is very good and hence the reported <ber> is 0 (good quality) but the quality of the remaining path to the other party is very bad and hence the final data connection quality is very poor. For this reason the signal quality indicator <ber> should not be taken into account to monitor data calls quality.
2.5.3.4 Quick Network Status Checking
Once the mobile has registered on one network, it may be useful to know the received signal strength and the network on which the mobile is registered. These information can be gathered with the commands +CREG, +COPS and +CSQ, which are part of the standard ETSI GSM 07.07 commands as seen before, unfortunately these commands are not so fast in the response due to network response time, especially the +COPS command. If You want to keep your software as general as possible you can follow the indications given before and forget this part; instead if you need or want a faster way to check at the mobile network information, the GE863-GPS provides a special command #MONI which can be used to gather all the information needed in a faster and simpler way:
send command AT#MONI=0<cr> •
•
wait for OK response
• send command AT#MONI?<cr>
• wait for response in the format:
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#MONI: <netname> BSIC:<bsic> RxQual:<qual> LAC:<lac> Id:<id> ARFCN:<arfcn> PWR:<dBm> dBmTA: <timadv>
OK
or in the case the network name is not known:
#MONI: Cc:<cc> Nc:<nc> BSIC:<bsic> RxQual:<qual> LAC:<lac> Id:<id> ARFCN:<arfcn> PWR:<dBm> dBm TA: <timadv>
OK where:
<netname> = name of network operator <cc> = country code <nc> = network operator code <n> = progressive number of adjacent cell <bsic> = base station identification code <qual> = quality of reception (0-7) (same as <ber> of +CSQ command) <lac> = localization area code <id> = cell identifier <arfcn> = assigned radio frequency channel <dBm> = received signal strength in dBm (same as "decoded" rssi value) <timadv> = timing advance
For example:
command:
AT#MONI=0<cr>
Answer:
OK
command:
AT#MONI?<cr>
Answer:
#MONI: I TIM BSIC:23 RxQual:7 LAC:AEAD Id:5265 ARFCN: 59 PWR: -80 dBm TA:0 OK In this case the mobile is registered on the network "I TIM", the signal strength is -80dBm (MMI may
indicate 4 antenna bars as reported on the table 5). The other information received is strictly technical and should not be given to the user.
For example2:
command:
AT#MONI=0<cr>
Answer:
OK
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command:
AT#MONI?<cr>
Answer:
#MONI: Cc: 010 Nc: 03 BSIC:23 RxQual:7 LAC:0001 Id:0001 ARFCN: 60 PWR: -83 dBm TA:0 OK In this case the mobile is registered on the network whose Country code is 010 and Network operator
code is 03, the signal strength is -83dBm (MMI may indicate 4 antenna bars as reported on the table
5). The other information received is strictly technical and should not be given to the user. The values reported are random and have no meaning they are used only to explain command usage.
NOTE: This command should be used only to gather information on network name and signal strength, to check if mobile is registered or is looking for a suitable network to register to, use always the +CREG command. This is due to the fact that if the network signal is too weak and mobile looses the registration, until a new network is found the #MONI command reports the last measured valid values and not the real ones. The TA (timing advance parameter) is valid only during a call.
TIP: To properly use this feature, check network registration with command +CREG as seen on par. 2.5.3.1 and when mobile is registered query the mobile for network operator name and signal strength with #MONI command.
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2.6 Placing a Voice call

Before a voice call can be placed, it is recommended to check if the mobile is registered on a network (see par.

2.6.1 Voice call device set up

2.6.1.1 Set the device in voice mode
• Send command AT+FCLASS=8<cr>
• wait for
NOTE: This command may be omitted if the modifier ";" is added at the end of the ATD command after the number to be dialed.
2.5.3.1) and if the signal strength is enough to ensure a call can be made.
OK response
2.6.1.2 Set the desired audio path active
The GE863-GPS has two different audio paths:
• internal microphone/ear (MT)
• external microphone/ear (HF)
Usually the internal path is used for a handset function, while the external is used for handsfree function. There are two way to switch between these two paths:
• SOFTWARE: by using the command AT#CAP= <n> (with n=1 OR n=2)
• HARDWARE: by setting AT#CAP=0 and setting the AXE input high (internal MT) or low
(external HF).
If only one path is needed, then it is preferable to use the internal one (MT).
TIP: when Hardware control is not needed AXE pin can be left unconnected.
TIP: the audio paths can be switched also during a call in both ways.
• Send command
where:
<n> = 0 for HARDWARE control with AXE input <n> = 1 for external HF path (regardless of the AXE input status) <n> = 2 for internal MT path (regardless of the AXE input status)
• wait for
OK response
AT#CAP=<n><cr>
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For example: 1 - Let's assume that the desired audio path is always the internal MT
Command:
AT#CAP=2<cr>
Answer:
OK
2 - Let's assume that the desired audio path has to be determined by HARDWARE pin AXE
Command:
AT#CAP=0<cr>
Answer:
OK
Now set the hardware pin AXE in the desired status.
2.6.1.3 Set the desired volume on the active audio path speaker output
This setting is not strictly necessary; it is also possible to keep the default volume setting.
• Send command
where: <vol> is a number between 0 and 10 representing the volume setting:
0 – minimum volume
10 - maximum volume
• wait for
NOTE: The volume setting refers to the ACTIVE path ear line and is stored each time. When changing audio path the volume setting will be reset to the previously stored value for that audio path.
OK response
AT+CLVL=<vol><cr>
2.6.1.4 Check for microphone mute setting
The microphone of the active path can be muted with an AT command; to be sure that it is not muted, it is suggested to check it with this command:
• Send command
AT+CMUT?<cr>
• wait for response in the format:
+CMUT: <mute> OK where:
<mute> is the muting setting for the microphone: 0 - microphone active
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1 - microphone muted
NOTE: The mute setting is different from Volume setting: it refers to both the audio paths, the mute setting will remain even when changing audio path.

2.6.2 Phone number dialing

2.6.2.1 Dial a given phone number
• Send command ATD <PhoneNumber><cr>
where: <PhoneNumber> is the phone number to be dialed
• wait for response:
Response Reason Action
OK The call has been placed Wait for the other party to lift
the receiver.. BUSY The line called is busy retry later NO ANSWER The receiver did not answer the
call
NO CARRIER Call placing has not been
successful
retry later
check for mobile registration
and signal strength
For example: 1- Let's assume you have to call the national number 040 - 4192111,
command:
ATD 0404192111<cr>
response
OK 2- Let's assume you have to call the national number but in international format +39-40-4192111,
command:
ATD +39404192111<cr>
response
OK 3- Let's assume you have to call the international number +386-40-4192111 without previously setting
the +FCLASS=8 (voice),
command:
ATD +386404192111;<cr>
response
OK
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2.6.3 Closing the voice call

2.6.3.1 Hang up the voice call
• Send command
• wait for response
TIP: during the voice call the device remains in command mode, so the escape sequence (+++) must not be issued before sending commands.
ATH<cr>
OK
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2.7 Placing a CSD Data call (not GPRS)

Before a data call can be placed, it is recommended to check if the mobile is registered on a network (see par.

2.7.1 Data call device set up

2.7.1.1 Set the device in data mode
• Send command AT+FCLASS=0<cr>
• wait for
TIP: The +FCLASS setting is maintained in memory, so there's no need to repeat this command if +FCLASS setting is not changed.
2.5.3.1) and if the signal strength is enough to ensure that a call can be made.
OK response
2.7.1.2 Set the desired modulation and speed for the connection
The data connection can be made using different modulations at different speeds. This connection mode can be selected with the command +CBST. The syntax for the command is: AT+CBST=<mod>,0,<ce> These parameters can be selected as seen in the table:
Command Modulation Speed
[bps]
AT+CBST==0, 0, 1 Autobauding ---- non transparent AT+CBST==1, 0, 1 V.21 300 non transparent AT+CBST==2, 0, 1 V.22 1200 non transparent AT+CBST==3, 0, 1 V.23 1200/75 non transparent AT+CBST==4, 0, 1 V.22Bis 2400 non transparent AT+CBST==6, 0, 1 V.32 4800 non transparent AT+CBST==7, 0, 1 V.32 9600 non transparent AT+CBST==14, 0, 1 V.34 14400 non transparent AT+CBST==65, 0, 1 V.110 300 non transparent AT+CBST==66, 0, 1 V.110 1200 non transparent AT+CBST==68, 0, 1 V.110 / X.31 2400 non transparent AT+CBST==70, 0, 1 V.110 / X.31 4800 non transparent AT+CBST==71, 0, 1 V.110 / X.31 9600 non transparent AT+CBST==75, 0, 1 V.110 / X.31 14400 non transparent AT+CBST==1, 0, 0 V.21 300 transparent
Connection
Element
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AT+CBST==2, 0, 0 V.22 1200 transparent AT+CBST==3, 0, 0 V.23 1200/75 transparent AT+CBST==4, 0, 0 V.22Bis 2400 transparent AT+CBST==6, 0, 0 V.32 4800 transparent AT+CBST==7, 0, 0 V.32 9600 transparent AT+CBST==65, 0, 0 V.110 300 transparent AT+CBST==66, 0, 0 V.110 1200 transparent AT+CBST==68, 0, 0 V.110 / X.31 2400 transparent AT+CBST==70, 0, 0 V.110 / X.31 4800 transparent AT+CBST==71, 0, 0 V.110 / X.31 9600 transparent
Once selected the appropriate <mod > and <ce> parameters from the table:
• Send command
• wait for
OK response
AT+CBST=<mod>,0,<ce><cr>

2.7.2 Phone number dialing (data call)

2.7.2.1 Dial a given phone number
• Send command ATD <PhoneNumber><cr>
where: <PhoneNumber> is the phone number to be dialed
• wait for response:
Response Reason Action
CONNECT 9600 The called modem is now on
line. BUSY The line called is busy retry later NO ANSWER The receiver did not answer the
call NO CARRIER The modem handshaking has
not been successful
TIP: The response to the ATD command is returned after the modem handshaking, this takes about 30 seconds, so allow this time before doing anything.
exchange data..
retry later check for mobile registration
and signal strength and eventually retry.
TIP: When the device is doing the handshake the issue of any character closes the handshake and aborts the call.
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For example: 1- Let's assume you have to call the national number 040 - 4192111,
command:
ATD 0404192111<cr>
response
CONNECT 9600 2- Let's assume you have to call the national number but in international format +39-40-4192111,
command:
ATD +39404192111<cr>
response
CONNECT 9600 3- Let's assume you have to call the international number +386-40-4192111,
command:
ATD +386404192111<cr>
response
CONNECT 9600

2.7.3 Closing the Data call

2.7.3.1 Exit the data mode and enter the command mode
• Send escape sequence +++
• wait the escape sequence pause time ( see S12 parameter)
• wait for response
NOTE: After the Escape sequence and during the call the only command that is accepted by the GE863-GPS is the ATH. All the other commands are not supported during a call.
TIP: during the escape sequence pause time S12 no further characters should be sent to the device in order to enter the command mode.
OK
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2.7.3.2 Hang up the data call
• Send command
• wait for response
TIP: during the data call the device remains in data (on line) mode, so the escape sequence (+++) must be issued before sending AT commands to the device.
ATH<cr>
NO CARRIER

2.8 Answer an incoming Call

When an incoming call is detected the device reports an unsolicited code which may be:
Unsolicited code Reason
RING The extended format of incoming call indication is
disabled and a call (voice or data) is incoming.
+CRING: VOICE The extended format of incoming call indication is
enabled and a voice call is incoming.
+CRING: ASYNC The extended format of incoming call indication is
enabled and an asynchronous transparent data call is incoming.
+CRING: REL ASYNC The extended format of incoming call indication is
enabled and an asynchronous reliable (not transparent) data call is incoming.
+CRING: SYNC The extended format of incoming call indication is
enabled and a synchronous transparent data call is incoming.
+CRING: REL SYNC The extended format of incoming call indication is
enabled and a synchronous reliable (not transparent) data call is incoming.
+CRING: FAX The extended format of incoming call indication is
enabled and a fax call is incoming.
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GE863-GPS Software User Guide
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To answer the call:
• Send command
ATA<cr>
• wait for response:
Response Reason Action
CONNECT 9600 The incoming call was a DATA
exchange data.. one and called modem is now on line.
ERROR No incoming call is found, call
call lost may have been lost
NO CARRIER The incoming call was a DATA
one and the modem handshaking has not been
check for mobile registration
and signal strength and modem
settings. successful
OK The incoming call was a VOICE
proceed ahead call and is now active.
TIP: The call is answered with the appropriate type (VOICE or DATA) regardless of the +FCLASS setting active. To distinguish between Data and Voice see the command response or the extended format incoming call indication.
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3 Advanced Operations

3.1 Accessing the phonebook

The GE863-GPS can access the phonebook storage of the SIM card inserted, by using specific AT commands it is possible to store and recall phone numbers and their associated name.

3.1.1 Preliminary phonebook set up

The GE863-GPS supports several SIM phonebook storages:
•
"SM" - SIM phonebook
This is the PB used to store and recall numbers during the normal operation of the device.
"FD" - SIM fixed dialing-phonebook (only phase 2/2+ SIM)
• This PB has several restrictions; to set it you need the PIN2 code and after having activated the FD only the calls to the numbers stored in the FD or their children are allowed, all the other calls are forbidden.
"LD" - SIM last-dialing-list (+CPBW and +CPBF are not applicable for this storage)
• This is the list of the last dialed numbers, it is updated automatically at each call originated and insertion or search on it is not possible, the only operations allowed are recall, read and delete.
"MC" - SIM missed-calls-list (+CPBW and +CPBF are not applicable for this storage)
• This is the list of the missed calls calling numbers, it is updated automatically at each call missed and insertion or search on it is not possible, the only operations allowed are recall, read and delete.
"RC" - SIM received-calls-list (+CPBW and +CPBF are not applicable for this storage)
• This is the list of the received calls calling numbers, it is updated automatically at each call received and insertion or search on it is not possible, the only operations allowed are recall, read and delete.
In order to access the storage you have to choose which one will be active. This must be the first PB operation always. Once selected storage, it is not anymore needed to select it again until the desired storage remains the one active and the device is not turned off.
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