2.12.1 Reset signal ................................................................................................................................... 18
2.15 Mounting the GE864 on your Board................................................................................ 21
2.15.1 General .......................................................................................................................................... 21
2.16 Mounting the GC864 on your board................................................................................21
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Telit GE864 and GC864 Product Description
80273ST10008a Rev. 14 - 18/09/08
DISCLAIMER
The information contained in this document is the proprietary information of Telit Communications
S.p.A. and its affiliates (“TELIT”). The contents are confidential and any disclosure to persons other
than the officers, employees, agents or subcontractors of the owner or licensee of this document,
without the prior written consent of Telit, is strictly prohibited.
Telit makes every effort to ensure the quality of the information it makes available. Notwithstanding the
foregoing, Telit does not make any warranty as to the information contained herein, and does not
accept any liability for any injury, loss or damage of any kind incurred by use of or reliance upon the
information.
Telit disclaims any and all responsibility for the application of the devices characterized in this
document, and notes that the application of the device must comply with the safety standards of the
applicable country, and where applicable, with the relevant wiring rules.
Telit reserves the right to make modifications, additions and deletions to this document due to
typographical errors, inaccurate information, or improvements to programs and/or equipment at any
time and without notice. Such changes will, nevertheless be incorporated into new editions of this
document.
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Telit GE864 and GC864 Product Description
80273ST10008a Rev. 14 - 18/09/08
1 Overview
The Telit GE864 and GC864 modules are small, lightweight, low power consumption and RoHS compliant
devices that allow digital communication services wherever a GSM 850, 900, DCS 1800 or PCS 1900
network is present.
The GE864 is a low cost connector-less best solution for medium to high quantity projects.
The GC864 is provided with a 80 pin Molex board to board connector and a 50 Ohm Murata RF
connector.
The GE864-PY and GC864-PY models integrate the “EASY SCRIPT” on top of all other features of the
GE864-QUAD and GC864-QUAD. The Python, is an engine script interpreter, allowing self controlled
operations. With the EASY SCRIPT feature the GE864-PY and GC864-PY become a finite product, they
just needs your script to be run.
The GC864-QUAD with SIM holder has an integrated SIM holder on the board and identical technical
characteristics as the classic GC864-QUAD.
All GE864 and GC864 models includes features like GPRS Class 10, Voice, Circuit Switched Data
transfer, Fax, Phonebook and SMS support, ‘EASY GPRS’ embedded TCP/IP stack and battery
charging capabilities.
The GE864 and GC864 are specifically designed and developed by Telit for OEM usage and dedicated
to portable data, voice and telemetric applications such as:
• Telemetry and Telecontrol (SCADA applications)
• Security systems
• Automated Meter Reading (AMR)
• Vending machines
• POS terminals
• PDAs and Mobile Computing
• Phones and Payphones
• Automotive and Fleet Management applications
• Battery powered applications needing a battery charger
• Return channel for digital broadcasting
• Applications, where the external application processor can be replaced by the PYTHON
engine provided by the GE864-PY or GC864-PY
All four models support the following functionalities
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Telit GE864 and GC864 Product Description
80273ST10008a Rev. 14 - 18/09/08
• JAMMING DETECT & REPORT (detect the presence of disturbing devices)
• CMUX
• SAP (SIM Access Profile)
• Multisocket
From the interface point of view, the GE864 and GC864 provide the following:
•Full RS232 UART, CMOS level (ASC0) interface for AT commands:
- Autobauding from 2.4 up to 57.6 Kbps
- Fixed baud rate up to 115.2 Kbps
• Two wires RS232, CMOS level (ASC1) for PYTHON debug:
• SIM card interface, 1.8 / 3 volts with auto-detection, hot insertion
• 21 x GPIO ports (max)
• 3 x A/D converters
• 1 x D/A converter
• 1 x buzzer output
• 1 x vibrator motor driver output
• 1 x single led supply output
In order to meet the competitive OEM and vertical market stringent requirements, Telit supports its
customers with a dedicatedSupport Policywith:
• TelitEvaluation Kit EVK2 to help you develop you application;
• A Website with all updated information available;
• an high level specialist technical support to assist you in your development;
For more updated information concerning product Roadmap and availability, technical characteristics,
commercial and other issues, please check on the Telit website www.telit.com
> Products > Modules.
NOTE: Some of the performances of the Telit modules depend on SW version installed on the module
itself.
The Telit modules SW group is continuously working in order to add new features and improve the
overall performances.
The Telit modules are easily upgradeable by the developer using the Telit Flash Programmer.
Furthermore, all the Telit modules have the conformity assessment against R&TTE.
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Telit GE864 and GC864 Product Description
80273ST10008a Rev. 14 - 18/09/08
2 General Product Description
2.1 Dimensions
2.1.1 GE864
The Telit GE864 module overall dimension are:
• Length: 30 mm
• Width: 30 mm
• Thickness: 2.8 mm
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2.1.2 GC864
The Telit GC864 module overall dimensions are:
• Length: 36.2 mm
• Width: 30 mm
• Thickness: 3.2 mm
Telit GE864 and GC864 Product Description
80273ST10008a Rev. 14 - 18/09/08
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Telit GE864 and GC864 Product Description
80273ST10008a Rev. 14 - 18/09/08
2.2 Weight
weight
GE864 6 gr
GC864 6,1 gr
2.3 Environmental requirements
The Telit GE864 and GC864 modules are compliant with the applicable ETSI reference documentation
GSM 05.05 Release1998.
2.3.1 Temperature range
Operating
Temperature
Range
Storage and Non
Operating
Temperature Range
(*) Functional: the module is able to make and receive voice calls, data calls, SMS and make GPRS traffic.
GE864-QUAD /
GE864-PY
–20°C ÷ +55°C –20°C ÷ +55°C
–40°C ÷ +85°C –40°C ÷ +85°C
–40°C ÷ +85°C –40°C ÷ +85°C
GC864-QUAD /
GC864-PY
Note
The module is fully functional(*) in all
the temperature range, and it fully
meets the ETSI specifications.
The module is fully functional (*) in all
the temperature range. Temperatures
outside the range –20°C ÷ +55°C,
might slightly deviate from ETSI
specifications.
2.3.2 Vibration Test (non functional)
• 10 ÷12Hz ASD = 1.92m 2 /s 3
• 12 ÷ 150Hz –3dB/oct
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Telit GE864 and GC864 Product Description
80273ST10008a Rev. 14 - 18/09/08
2.3.3 RoHS compliance
As a part of Telit corporate policy regarding environmental protection, the GE864 and GC864 comply
with the RoHS (Restriction of Hazardous Substances) directive of the European Union (EU Directive
2002/95/EG).
2.4 Operating Frequency
The operating frequencies in GSM, DCS, PCS modes are conform to the GSM specifications.
The Telit GE864 and GC864 transceiver modules in GSM–850/900 operating mode are class 4 in
accordance with the specifications which determine the nominal 2W peak RF power (+33dBm) on 50
Ohm.
DCS–1800/PCS–1900
The Telit GE864 and GC864 transceiver modules in DCS–1800/PCS–1900 operating mode are class 1
in accordance with the specifications which determine the nominal 1W peak RF power (+30dBm) on
50 Ohm.
2.6 Reference sensitivity
GSM–850/900
The sensitivity of the Telit GE864 and GC864 modules according to the specifications for the class 4
GSM 850/900 portable terminals are –107 dBm typical in normal operating conditions.
DCS–1800/PCS–1900
The sensitivity of the Telit GE864 and GC864 module according to the specifications for the class 1
portable terminals DCS-1800/PCS 1900 are –106 dBm typical in normal operating conditions.
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Telit GE864 and GC864 Product Description
80273ST10008a Rev. 14 - 18/09/08
2.7 Antenna
The antenna that the customer chooses to use should fulfill the following requirements:
Depending by frequency band(s) provided by
Frequency range
Bandwidth
For further information please refer to the GE864 and GC864 Hardware User Guide.
the network operator, the customer shall use
the most suitable antenna for that/those
band(s)
80 MHz in EGSM 900, 70 MHz if GSM 850,
170 MHz in DCS, 140 MHz PCS band
2.7.1 GC864 Antenna connector
The GC864 module is equipped with a 50 Ohm RF connector from Murata, GSC type P/N MM9329-2700B. The suitable counterpart is Murata MXTK92 Type or MXTK88 Type.
Moreover, the GC864 has the antenna pads on the back side of the PCB. This allows the manual
soldering of the coaxial cable directly on the back side of the PCB. However, the soldering is not an
advisable solution for a reliable connection of the antenna.
2.8 Supply voltage
The external power supply must be connected to VBATT signal and must fulfill the following
requirements:
POWER SUPPLY
Nominal Supply
Voltage
Max Supply Voltage 4.2 V 4.5 V
Supply voltage range
SW rel. 7.02.xx4 or
older
3.8 V 3.8 V
3.4 V - 4.2 V 3.22 V – 4.5 V
SW rel. 7.03.x00 or
newer
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Telit GE864 and GC864 Product Description
80273ST10008a Rev. 14 - 18/09/08
NOTE: Operating voltage range must never be exceeded; care must be taken in order to fulfill
min/max voltage requirements.
2.9 Power consumption
The typical current consumption of the Telit GE864 and GC864 are:
Power off current (typical)
< 26 μA;
Stand–by current (GSM Idle)
Operating current in voice channel
Operating current in GPRS class 10
< 22 mA (< 4 mA using command AT+CFUN=5)
<200 mA @ worst network conditions
< 370 mA @ worst network conditions
2.10 Embodied Battery charger
The battery charger is suited for 3.7V Li-Ion rechargeable battery (suggested capacity 500-1000mAH).
The Charger needs only a CURRENT LIMITED power source input and charges the battery directly
through VBATT connector pins.
Battery charger input pin
Battery pins
Battery charger input voltage min
Battery charger input voltage typ
Battery charger input voltage max
Battery charger input current max
Battery type
NOTE: If embodied battery charger is used, then a LOW ESR capacitor of at least 100μF must be
mounted in parallel to VBATT pin.
NOTE: when power is supplied to the CHARGE pin, a battery must always be connected to the
VBATT pin of the GE864 / GC864.
CHARGE
VBATT, GND
5.0 V
5.5 V
7.0 V
400mA
Li-Ion rechargeable
2.11 User Interface
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Telit GE864 and GC864 Product Description
80273ST10008a Rev. 14 - 18/09/08
The user interface is managed by AT commands specified on the ITU-T V.250, GSM 07.07 and 07.05
specifications.
2.11.1 Speech Coding
The GE864 and GC864 voice codec support the following rates:
• Half Rate
• Full rate
• Enhanced Full Rate
• Adaptive Multi Rate
2.11.2 SIM Reader
The GE864 and GC864 support phase 2 GSM11.14 - SIM 1.8V and 3V ONLY with an external SIM
connector. For 5V SIM operation an external level translator can be added.
2.11.3 SMS
The GE864 and GC864 support the following SMS types:
• Mobile Terminated (MT) class 0 – 3 with signaling of new incoming SMS, SIM full, SMS
read
• Mobile Originated class 0 – 3 with writing, memorize in SIM and sending
• Cell Broadcast compatible with CB DRX with signaling of new incoming SMS.
2.11.4 Real Time Clock and Alarm
The Telit GE864 and GC864 support the Real Time Clock and Alarm functions through AT commands,
furthermore an alarm output pin (GPIO6) can be configured to indicate the alarm with a hardware line
output.
Furthermore the Voltage Output of the RTC power supply is provided so that a backup capacitor can
be added to increase the RTC autonomy.
2.11.5 Data/fax transmission
The Telit GE864 and GC864 support:
• GPRS Class 10, MS Class B
• CSD up to 14.4 Kbps
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Telit GE864 and GC864 Product Description
80273ST10008a Rev. 14 - 18/09/08
• Fax service, Class 1 Group 3
2.11.6 Local security management
The local security management can be done with the lock of Subscriber Identity module (SIM), and
security code request at power–up.
2.11.7 Call control
The call cost control function is supported.
2.11.8 Phonebook
This function allows the storing of the telephone numbers in SIM memory. The capability depends on
SIM version and embedded memory.
2.11.9 Characters management
The Telit GE864 and GC864 supports the IRA characters set (International Reference Alphabet), in TEXT
and PDU mode.
2.11.10 SIM related functions
Activation and deactivation of the numbers stored in phone book FDN, ADN and PINs are supported.
Extension at the PIN2 for the PUK2 insertion capability for lock condition is supported.
2.11.11 Call status indication
The call status indication by AT commands is supported.
2.11.12 Automatic answer (Voice, Data or FAX)
After a specified number of rings, the module will automatically answer with a beep. The user can set
the number of rings by means of the command ATS0=<n>.
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Telit GE864 and GC864 Product Description
2.11.13 Supplementary services (SS)
The following supplementary services are supported:
• Call Barring,
• Call Forwarding,
• Calling Line Identification Presentation (CLIP),
• Calling Line Identification Restriction (CLIR),
• Call Waiting, other party call Waiting Indication,
• Call Hold, other party Hold / Retrieved Indication,
• Closed User Group supplementary service (CUG),
• Advice of Charge,
• Unstructured SS Mobile Originated (MO)
80273ST10008a Rev. 14 - 18/09/08
2.11.14 Acoustic signaling
The acoustic signaling of the GE864 and GC864 on the selected acoustic device are the following:
• Call waiting;
• Ringing tone;
• SMS received tone;
• Busy tone;
• Power on/off tone;
• Off Hook dial tone;
• Congestion tone;
• Connected tone;
• Call dropped;
• No service tone;
• Alarm tone.
2.11.15 Buzzer output
The General Purpose I/O pin GPIO7 can be configured to output the BUZZER output signal, with only
an external MOSFET/transistor and a diode a Buzzer can be directly driven.
The ringing tone and the other signaling tones can be redirected to this Buzzer output with a specific
AT command.
2.11.16 RF Transmission Monitor
As alternate function of the GPIO5, the GE864 and GC864 provide the RF transmission monitor. When
the alternate function is activated, the pin of GPIO5 changes to HIGH every time the module transmits
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Telit GE864 and GC864 Product Description
80273ST10008a Rev. 14 - 18/09/08
an RF signal and remains HIGH for the duration of the transmission sequence, i.e. it does not change
with every GSM signal burst.
2.12 Logic level specifications
Where not specifically stated, all the interface circuits work at 2.8V CMOS logic levels. To get more
detailed information about the logic level specifications used in the Telit GE864 and Telit GC864interface
circuits please consult the Hardware User Guide.
2.12.1 Reset signal
Signal Function I/O GE864 ball GC864 pin
RESET Phone reset I/O A2 54
RESET is used to reset the GE864 and GC864. Whenever this signal is pulled low, the GE864 / GC864 is
reset. When the device is reset it stops any operation and after the release of the reset it is
unconditionally rebooted, without doing any detach operation from the network where it is registered
to. This behavior is not like a proper shut down because any GSM device is requested to issue a
detach request on turn off. For this reason the Reset signal must not be used to normally shutting
down the device, but only as an emergency exit in the rare case the device remains stuck waiting for
some network response.
The RESET is internally controlled on start-up to achieve always a proper power-on reset sequence,
so there's no need to control this pin on start-up. It may only be used to reset a device already on that
is not responding to any command.
NOTE: do not use this signal to power off theTelit GE864 / GC864 module. Use the ON_OFF* signal
to perform this function or the AT#SHDN command.
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Telit GE864 and GC864 Product Description
80273ST10008a Rev. 14 - 18/09/08
2.13 Audio levels specifications
The audio of the GE864 / GC864 is organized into two main paths:
• internal path (called also MT)
• external path (called also HF)
These two paths are meant respectively for handset and headset/hands-free use. The GE864 / GC864
has a built in echo canceller and a noise suppressor, tuned separately for the two audio paths; for the
internal path the echo canceller parameters are suited to cancel the echo generated by a handset,
while for the external audio path they are suited for a hands-free use.
For more information on the audio refer to the Hardware User Guide.
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Telit GE864 and GC864 Product Description
80273ST10008a Rev. 14 - 18/09/08
2.14 Converters
2.14.1 ADC Converter
The on board ADCs are 11-bit converter. They are able to read a voltage level in the range of 0÷2
volts applied on the ADC pin input, store and convert it into 11 bit word.
Input Voltage range 0 2 Volt
AD conversion - 11 bits
Resolution - < 1 mV
Sampling rate 1 (idle) 60 (on traffic) sec
Min Max Units
2.14.2 DAC Converter
The on board DAC is a 10 bit converter, able to generate an analogue value based a specific input in
the range from 0 up to 1023. However, an external low-pass filter is necessary. See the HW User
Guide for the details.
Voltage range (filtered) 0 2,6 Volt
Range 0 1023 Steps
Min Max Units
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Telit GE864 and GC864 Product Description
80273ST10008a Rev. 14 - 18/09/08
2.15 Mounting the GE864 on your Board
2.15.1 General
The Telit GE864 modules has been designed in order to be compliant with a standard lead-free SMT
process. For detailed information about PCB pad design and conditions to use in SMT process please
consult Hardware User Guide.
2.16 Mounting the GC864 on your board
The position of the Molex board to board connector and the pin 1 are shown in the following picture.
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Telit GE864 and GC864 Product Description
80273ST10008a Rev. 14 - 18/09/08
NOTE: metal tabs present on GC864 should be connected to GND
2.17 Packing system
The Telit GE864 and GC864 are packaged on trays of 20 pieces each. This is especially suitable for
the GE864 according to SMT processes for pick & place movement requirements.
The size of the tray is: 329 x 176mm
NOTE: These trays can withstand at the maximum temperature of 65° C.
Section A-A
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Telit GE864 and GC864 Product Description
80273ST10008a Rev. 14 - 18/09/08
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Telit GE864 and GC864 Product Description
80273ST10008a Rev. 14 - 18/09/08
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Telit GE864 and GC864 Product Description
80273ST10008a Rev. 14 - 18/09/08
3 Evaluation Kit
In order to assist you in the development of your Telit GE864 / GC864 module based application, Telit can
supply the EVK2 Evaluation Kit with appropriate power supply, SIM card housing, RS 232 serial port
level translator, direct UART connection, Handset, Headset and Hands-free (car kit) audio, antenna.
The EVK2 provides a fully functional solution for a complete data/phone application.
The standard serial RS232 9 pin connector placed on the Evaluation Kit allows the connection of the
EVK2 system with a PC or other DTE.
The development of the applications utilizing the Telit GE864 / GC864 module must present a proper
design of all the interfaces towards and from the module (e.g. power supply, audio paths, level
translators), otherwise a decrease in the performances will be introduced or, in the worst case, a
wrong design can even lead to an operating failure of the module.
In order to assist the hardware designer in his project phase, the EVK2 board presents a series of
different solutions, which will cover the most common design requirements on the market, and which
can be easily integrated in the OEM design as building blocks or can be taken as starting points to
develop a specific one.
GE864 Evaluation Kit
For a detailed description of the Telit Evaluation Kit refer to the documentation provided with the Telit
GE864 / GC864 Hardware User Guide and EVK2 User Manual.
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App
App
Telit GE864 and GC864 Product Description
80273ST10008a Rev. 14 - 18/09/08
4 Software Features
4.1 Enhanced Easy GPRS Extension
4.1.1 Overview
The Easy GPRS feature allows the Telit GE864 / GC864 user to contact a device in internet and establish
with it a raw data flow over the GPRS and Internet networks.
This feature can be seen as a way to obtain a "virtual" serial connection between the Application
Software on the Internet machine involved and the controller of the Telit GE864 / GC864 module,
regardless of all the software stacks underlying.
An example of the protocol stack involved in the devices is reported:
Local
lication
EASY
GPRS
Serial Line
Driver
V. 24
Controller
Device
EASY
GPRS
Data on
Board
V. 24
Telit‘s
Module
TCP/UDP
VViirrttuuaall SSeerriiaall LLiinnkk
NNeettwwoorrkk IInntteerrwwoorrkkiinngg
GPRS Network and Internet
This particular implementation allows to the devices interfacing to the Telit GE864 / GC864 module the
use of the GPRS and Internet packet service without the need to have an internal TCP/IP stack since
this function is embedded inside the module.
Easy GPRS overcomes some of the known limitations of the previous implementation and implements
some new features such as:
Remote
lication
IP
IP
TCP/UDP
IP
L2
L2
L1
L1
Remote
Device
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Telit GE864 and GC864 Product Description
80273ST10008a Rev. 14 - 18/09/08
• Keep the GPRS context active even after the closing of a socket, allowing the application to keep
the same IP address;
• Also Mobile terminated (incoming) connections can be made, now it is possible to receive
incoming TCP connection requests;
• A new internal firewall has been implemented in order to guarantee a certain level of security on
internet applications.
4.1.2 Easy GPRS definition
The Easy GPRS feature provides a way to replace the need of an Internet TCP/IP stack at the
terminal equipment side. The steps that will be required to obtain a virtual serial connection (that is
actually a socket) to the Internet peer are:
• configuring the GPRS Access
• configuring the embedded TCP/IP stack behavior
• defining the Internet Peer to be contacted
• request the GPRS and socket connections to be opened (host is connected)
• exchange raw data
• close the socket and GPRS context
All these steps are achieved through AT commands.
As for common modem interface, two logical status are involved: command mode and data traffic
mode.
• In Command Mode
Internet stack and to start up the data traffic.
• In data traffic mode
will be encapsulated in the previously configured TCP / IP packets which will be sent to the other
side of the network and vice versa. Control plane of ongoing socket connection is deployed
internally to the module.
For more detailed information regarding GPRS please consult Easy GPRS User Guide and AT
Commands Reference Guide.
(CM), some AT commands are provided to configure the Data Module
(Socket Mode, SKTM), the client can send/receive a raw data stream which
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SSooc
Telit GE864 and GC864 Product Description
80273ST10008a Rev. 14 - 18/09/08
4.2 Multisocket
New functionality of the Telit modules, multisocket is an extension of Telit Easy GPRS feature, which
allows the user to have two contexts activated (that means two different IP address), more than one
socket connection (with a maximum of 6) and simultaneous FTP client service.
The basic idea of multisocket is the possibility of suspend a socket connection with the escape
sequence +++.
With IP Easy we can use a SKTD to open a socket connection and go online. After online activities we
use +++ sequence to close the connection (see the figure below).
OOnnlliinnee mmooddee
DDaattaa TTrraaffffiicc
Where the green part represents the module command mode while the red part is the online mode.
Now, the online mode can be suspended with the escape sequence by using the multisocket feature.
During suspend mode the data received by the socket will be buffered. These data will be displayed
after socket resumption, as shown in the figure below:
OOnn LLiinnee
DDaattaa
ckkeettiissssttiillllaalliivvee
++++++
DDaattaa
OOnn LLiinnee
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SSuus
sppeenndd
OOnn LLiinne
e
SSuus
sppeenndd
Telit GE864 and GC864 Product Description
80273ST10008a Rev. 14 - 18/09/08
This new feature allows the user to switch between online mode and command mode without closing
the connection and eventually opening another socket (or resuming the suspended one) or FTP
connection.
Another feature is the possibility to associate any socket connection to a specific context, this means
that we can use different IP addresses for the connections (max 2). Socket identifier is called
Connection Id (selects which socket we want to use from 1 up to 6) and every Connection Id is
associated to a context.
For more detailed information please consult Easy GPRS User Guide.
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Telit GE864 and GC864 Product Description
80273ST10008a Rev. 14 - 18/09/08
4.3 Jammed Detect & Report Extension
4.3.1 Overview
The Jammed Detect & Report feature allows a Telit GE864 / GC864 to detect the presence of a disturbing
device such as a Communication Jammer and give indication to the user and/or send a report of that
to the network.
This feature can be very important in alarm, security and safety applications that rely on the module
for the communications. In these applications, the presence of a Jammer device can compromise the
whole system reliability and functionality and therefore shall be recognized and reported either to the
local system for countermeasure actions or to the network providing remote actions.
An example scenario could be an intrusion detection system that uses the module for sending the
alarm indication for example with an SMS to the system owner, and a thief income using a Jammer to
prevent any communication between the GSM module and the network.
In such a case, the module detects the Jammer presence even before the break in and can trigger an
alarm siren, other communication devices (PSTN modem) or directly report this condition to the
network that can provide further security services for example sending SMS to the owner or police.
Obviously this last service depends also from network infrastructure support and it may not be
supported by some networks.
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Telit GE864 and GC864 Product Description
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4.4 CMUX
CMUX (Converter-Multiplexer) is a multiplexing protocol implemented in the Telit module that can be
used to send any data, SMS, fax, TCP data.
4.4.1 Product architecture
The Multiplexer mode enables one serial interface to transmit data to four different customer
applications. This is achieved by providing four virtual channels using a Multiplexer (Mux).
This is especially advantageous when a fax/data/GPRS call is ongoing. Using the Multiplexer features,
e.g. controlling the module or using the SMS service can be done via the additional channels without
disturbing the data flow; access to the second UART is not necessary.
Furthermore, several accesses to the module can be created with the Multiplexer. This is of great
advantage when several independent electronic devices or interfaces are used.
To access the three virtual interfaces, both the GSM engine and the customer application must
contain Mux components, which communicate over the multiplexer protocol.
In Multiplexer mode, AT commands and data are encapsulated into packets. Each packet has channel
identification and may vary in length.
4.4.2 Implementation feature and limitation
• 7.10 CMUX Basic Option used
• CMUX implementation support four full DLCI (Serial Port)
• Every CMUX instance has its own user profile storage in NVM
• Independent setting of unsolicited message.
• In case of GPS product one serial port can be dedicated to NMEA output.
• Every CMUX instance has its own independent flow control
NOTE: More details about the Multiplexer mode are available in the Cmux User Guide.
Reproduction forbidden without Telit Communications S.p.A. written authorization - All Rights Reserved page 31 of 62
Telit GE864 and GC864 Product Description
80273ST10008a Rev. 14 - 18/09/08
4.5 Easy Script Extension - Python interpreter
4.5.1 Overview
NOTE: This feature is available only for the
The Easy Script Extension is a feature that allows driving the modem "internally", writing the
controlling application directly in a nice high level language: Python.
The Easy Script Extension is aimed at low complexity applications where the application was usually
done by a small microcontroller that managed some I/O pins and the GE864-PY and GC864-PY
through the AT command interface.
A schematic of such a configuration can be:
FFLLAASSHH RROOMM
GGSSMM--GGPPRRSS
PPrroottooccooll SSttaacckk
FFLLAASSHH
mmeemmoorryy
RROOMM
PPHHYYSSIICCAALL AATT SSEERRIIAALL
HHAARRDDWWAARREE RREESSOOUURRCCEESS
Telit GE864-PY and GC864-PY.
EEXXTTEERRNNAALL
CCOONNTTRROOLLLLEERR
GGEE886644--PPYY // GGCC886644--PPYY
PPOORRTT
AATT ccoommmmaannddss
GGPPRRSS MMOODDEEMM
EENNGGIINNEE
RRAAMM ffoorr
GGSSMM--GGPPRRSS
mmooddeemm
RRAAMM
PPrroottooccooll SSttaacck
k
Reproduction forbidden without Telit Communications S.p.A. written authorization - All Rights Reserved page 32 of 62
Telit GE864 and GC864 Product Description
80273ST10008a Rev. 14 - 18/09/08
In order to eliminate this external controller, and further simplify the programming of the sequence
of operations, inside the GE864-PY / GC864-PY it is included:
• Python script interpreter engine v. 1.5.2+
• around 3MB of Non Volatile Memory room for the user scripts and data
• 1.2 MB RAM reserved for Python engine usage
A schematic of this approach is:
FFLLAASSHH RROOMM
AAvvaaiillaabbllee UUsseerr
NNVVMM FFLLAASSHH
MMeemmoorryy
((33MMbbyytte
GGSSMM--GGPPRRSS
e
))
PPrroottooccooll SSttaacckk
FFLLAASSHH
RROOMM
mmeemmoorryy
GGEE886644--PPYY // GGCC886644--PPYY
PPYYTTHHOONN IINNTTEERRPPRREETTEERR
EENNGGIINNEE
MMDDMM mmoodduullee
VVIIRRTTUUAALL IINNTTEERRNNAALL AATT
SSEERRIIAALL PPOORRTT
AATT ccoommmmaannddss
GGPPRRSS MMOODDEEMM
EENNGGIINNE
E
HHAARRDDWWAARREE RREESSOOUURRCCEESS
RRAAMM
AAvvaaiillaabbllee RRAAMM
ffoorr PPyytthhoonn
IInntteerrpprreetteerr
((11..55MMbbyytte
RRAAMM ffoorr
GGSSMM--GGPPRRSS
mmooddeemm
PPrroottooccooll SSttaacck
e
))
k
Reproduction forbidden without Telit Communications S.p.A. written authorization - All Rights Reserved page 33 of 62
STICHTING MATHEMATISCH CENTRUM AND CNRI DISCLAIM ALL WARRANTIES WITH
REGARD TO THIS SOFTWARE, INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY
AND FITNESS, IN NO EVENT SHALL STICHTING MATHEMATISCH CENTRUM OR CNRI BE
LIABLE FOR ANY SPECIAL, INDIRECT OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN
CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
.
Reproduction forbidden without Telit Communications S.p.A. written authorization - All Rights Reserved page 34 of 62
r
V
r
r
rry
y
A
A
r
r
r
rry
y
Telit GE864 and GC864 Product Description
80273ST10008a Rev. 14 - 18/09/08
4.5.3 Python implementation description
Python scripts are text files stored in NVM inside the Telit GE864-PY / GC864-PY. There's a file
system inside the module that allows to write and read files with different names on one single level
(no subdirectories are supported).
Attention: it is possible to run only one Python script at the time.
The Python script is executed in a task inside the Telit module at the lowest priority, making sure this
does not interfere with GSM/GPRS normal operations. This allows serial ports, protocol stack etc. to
run independently from the Python script.
The Python script interacts with the Telit module functionality through four build-in interfaces.
Reproduction forbidden without Telit Communications S.p.A. written authorization - All Rights Reserved page 35 of 62
Telit GE864 and GC864 Product Description
80273ST10008a Rev. 14 - 18/09/08
•The MDM interface is the most important one. It allows Python script to send AT commands,
receive responses and unsolicited indications, send data to the network and receive data from
the network during connections. It is quite the same as the usual serial port interface in the
Telit module. The difference is that this interface is not a real serial port but just an internal
software bridge between Python and mobile internal AT command handling engine. All AT
commands working in the Telit module are working in this software interface as well. Some of
them have no meaning on this interface, such as those regarding serial port settings. The usual
concept of flow control keeps its meaning over this interface, but it's managed internally.
•The MDM2 interface is the second interface between Python and mobile internal AT
command handling. It is used to send AT commands from Python script to mobile and receive
AT responses from mobile to Python script when the classic MDM built-in module already in
use.
•The SER interface allows Python script to read from and write to the real, physical serial port
where usually the AT command interface resides, for example to read NMEA information from
a GPS device. When Python is running this serial port is free to be used by Python script
because it is not used as AT command interface since the AT parser is mapped into the
internal virtual serial port. No flow control is available from Python on this port.
•The SER2 interface allows Python script to read from and write to the real physical serial port
ASC1, that is usually available for trace and debug.
•The GPIO interface allows Python script to handle general purpose input output faster than
through AT commands, skipping the command parser and going directly to control the pins.
• The MOD interface is a collection of useful functions.
• The IIC interface is an implementation on the Python core of the IIC bus Master. It allows
Python to create one or more IIC bus on the available GPIO pins.
•The SPI interface isan implementation on the Python core of the SPI bus Master. It allows
Python to create one or more SPI bus on the available GPIO pins.
For the debug, the print command is directly forwarded on the EMMI TX pin (second serial port) at
baud rate115200bps 8N1.
4.5.4 Python core supported features
The Python core version is 1.5.2+ (string methods added to 1.5.2).
You can use all Python statements and almost all Python built-in types and functions.
.
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Built-in types and functions not
supported
complex marshal
float imp
long _main_
docstring _builtin_
sys
md5
Available modules
(all others are not supported)
Telit GE864 and GC864 Product Description
80273ST10008a Rev. 14 - 18/09/08
4.5.5 Python Build-in Custom Modules
Several build in custom modules have been included in the python core, specifically aimed at the
hardware environment of the module.
The build in modules included are:
MDM
MDM2
SER
SER2
GPIO
MOD
IIC
SPI
NOTE: More details about the Python modules are available in the Easy Script in Python Guide.
interface between Python and mobile internal AT command handling
second interface between Python and mobile internal AT command handling
interface between Python and mobile internal serial port ASC0 direct handling
interface between Python and mobile internal serial port ASC1 direct handling
interface between Python and mobile internal general purpose input output direct
handling
interface between Python and mobile miscellaneous functions
custom software Inter IC bus that can be mapped on creation over almost any
GPIO pin available
custom software Serial Protocol Interface bus that can be mapped on creation
over almost any GPIO pin available
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Telit GE864 and GC864 Product Description
80273ST10008a Rev. 14 - 18/09/08
4.6 SAP: SIM Access Profile
4.6.1 Product architecture
The SAP feature allows the module to use the SIM of a remote SIM Server. This feature is
implemented using special AT Command on a Virtual circuit of the CMUX interface.
4.6.2 Implementation feature
• SAP is based on 7.10 CMUX Basic Option used
• Only SAP Client features
• Logic HW flow control is recommended on the Virtual instance selected for the SAP command.
4.6.3 Remote SIM Message Command Description
The module sends request commands to the client application through a binary message that is
crowned in the CMUX message. The client application shall extract the message and send it to the
SAP server, through the appropriate protocols (e.g. by RFCOMM, that is the Bluetooth serial port
emulation entity).
The client application shall extract all the messages sent by SAP server and put them in the CMUX
message, to sent to the module.
The module satisfies the following feature requirements:
• Connection management
• Transfer APDU
• Transfer ATR
• Power SIM on
• Report Status
• Error Handling
Every feature needs some procedures support:
Feature Procedure
Connect Connection Management
Report Status
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Telit GE864 and GC864 Product Description
80273ST10008a Rev. 14 - 18/09/08
Transfer ATR
Disconnection Initiated by the Client
Disconnection Initiated by the Server
Transfer APDU Transfer APDU
Transfer ATR Transfer ATR
Power SIM on Power SIM on
Transfer ATR
Report Status Report Status
Error Handling Error Response
Report Status, Disconnection Initiated by the Server and Error Response are independent messages
sent by server. The other procedures consist of couples of messages, started by client.
NOTE: More details about the SAP are available in the SAP User Guide.
4.7 TFUS (Telit Firmware Update Service)
Telit Firmware Update Service (TFUS) provides a cost-effective, fast, secure and reliable way for
wirelessly reflashing the firmware on mobile devices, ensuring that embedded software is up-to-date
with the latest enhancements and features.
Customers, who want to benefit from this service, must pass through the Telit certification program,
where Telit will assist the customer in validating the correct implementation of FOTA.
4.7.1 FOTA (Firmware Over The Air)
Telit, which has signed a partnership agreement with the worldwide leader of Firmware OTA
technology Red Bend, has integrated its unique vCurrent® Mobile client software for use in its m2m
product portfolio. Telit is therefore able to upgrade its products by transmitting only a delta file, which
represents the difference between one firmware version and another.
All Telit modules, starting from SW version 7.03.x00, support Over-the-Air firmware update. Note that
this service will be enabled only after signing specific agreement with Telit.
See “TFUS Application Note” for details in www.telit.com
Application Notes
.
> Product > GSM/GPRS > Product Family >
Reproduction forbidden without Telit Communications S.p.A. written authorization - All Rights Reserved page 39 of 62
5 AT Commands
Telit GE864 and GC864 Product Description
80273ST10008a Rev. 14 - 18/09/08
The Telit GE864 / GC864 module can be driven via the serial interface using the standard AT commands
1
.
The Telit GE864 / GC864 module is compliant with:
1. Hayes standard AT command set, in order to maintain the compatibility with existing SW
programs.
2. ETSI GSM 07.07 specific AT command and GPRS specific commands.
3. ETSI GSM 07.05 specific AT commands for SMS (Short Message Service) and CBS (Cell
Broadcast Service)
4. FAX Class 1 compatible commands
Moreover the Telit GE864 / GC864 module supports also Telit proprietary AT commands for special
purposes.
For a more information about AT commands supported by GE864/GC864 modules please refer to
document AT Commands Reference Guide, code 80000ST10025a.
1
The AT is an ATTENTION command and is used as a prefix to other parameters in a string. The AT command
combined with other parameters can be set up in the communications package or typed in manually as a
command line instruction.
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Telit GE864 and GC864 Product Description
80273ST10008a Rev. 14 - 18/09/08
6 Conformity Assessment Issues
The Telit GE864 and GC864 are assessed to be conform to the R&TTE Directive.
If the antenna connected to the module is conforming to the requirements specified
under this document, it requires no further evaluation under Article 3.2 of the
R&TTE Directive and do not require further involvement of a R&TTE Directive
Notified Body for the final product.
In all other cases, or if the manufacturer of the final product is in doubt then the
equipment integrating the radio module must be assessed against Article 3.2 of the R&TTE Directive.
In all cases assessment of the final product must be made against the Essential requirements of the
R&TTE Directive Articles 3.1(a) and (b), safety and EMC respectively, and any relevant Article 3.3
requirements.
The Telit GE864 and GC864 are conforming to the following European Union Directives:
• Low Voltage Directive 73/23/EEC and product safety
• Directive 89/336/EEC for conformity for EMC
In order to satisfy the essential requisite of the R&TTE 99/5/EC directive, the GE864 module is
compliant with the following standards:
• GSM (Radio Spectrum). Standard: EN 301 511 and 3GPP 51.010-1
• EMC (Electromagnetic Compatibility). Standards: EN 301 489-1 and EN 301 489-7
• LVD (Low Voltage Directive) Standards: EN 60 950
In this document and the Hardware User Guide, Software User Guide all the information you may
need for developing a product meeting the R&TTE Directive is included.
Furthermore the Telit GE864 / GC864 module is FCC Approved as module to be installed in other devices.
This device is to be used only for fixed and mobile applications. If the final product after integration is
intended for portable use, a new application and FCC is required.
The Telit GE864 / GC864 is conforming with the following US Directives:
• Use of RF Spectrum. Standards: FCC 47 Part 24 (GSM 1900)
• EMC (Electromagnetic Compatibility). Standards: FCC47 Part 15
To meet the FCC's RF exposure rules and regulations:
Reproduction forbidden without Telit Communications S.p.A. written authorization - All Rights Reserved page 41 of 62
Telit GE864 and GC864 Product Description
80273ST10008a Rev. 14 - 18/09/08
• The system antenna(s) used for this transmitter must be installed to provide a separation
distance of at least 20 cm from all the persons and must not be co-located or operating in
conjunction with any other antenna or transmitter.
• The system antenna(s) used for this module must not exceed 3 dBi for mobile and fixed or
mobile operating configurations.
• Users and installers must be provided with antenna installation instructions and transmitter
operating conditions for satisfying RF exposure compliance.
Manufacturers of mobile, fixed or portable devices incorporating this module are advised to clarify
any regulatory questions and to have their complete product tested and approved for FCC
compliance.
Reproduction forbidden without Telit Communications S.p.A. written authorization - All Rights Reserved page 42 of 62
Telit GE864 and GC864 Product Description
80273ST10008a Rev. 14 - 18/09/08
6.1 GE864-QUAD Conformity Assessment
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Telit GE864 and GC864 Product Description
80273ST10008a Rev. 14 - 18/09/08
Reproduction forbidden without Telit Communications S.p.A. written authorization - All Rights Reserved page 44 of 62
Telit GE864 and GC864 Product Description
80273ST10008a Rev. 14 - 18/09/08
6.2 GE864-PY Conformity Assessment
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Telit GE864 and GC864 Product Description
80273ST10008a Rev. 14 - 18/09/08
Reproduction forbidden without Telit Communications S.p.A. written authorization - All Rights Reserved page 46 of 62
Telit GE864 and GC864 Product Description
80273ST10008a Rev. 14 - 18/09/08
6.3 GE864-QUAD/PY : RoHS certificate
Reproduction forbidden without Telit Communications S.p.A. written authorization - All Rights Reserved page 47 of 62
Telit GE864 and GC864 Product Description
80273ST10008a Rev. 14 - 18/09/08
6.4 GC864-QUAD: Conformity Assessment
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Telit GE864 and GC864 Product Description
80273ST10008a Rev. 14 - 18/09/08
Reproduction forbidden without Telit Communications S.p.A. written authorization - All Rights Reserved page 49 of 62
Telit GE864 and GC864 Product Description
80273ST10008a Rev. 14 - 18/09/08
6.5 GC864-PY: Conformity Assessment
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Telit GE864 and GC864 Product Description
80273ST10008a Rev. 14 - 18/09/08
Reproduction forbidden without Telit Communications S.p.A. written authorization - All Rights Reserved page 51 of 62
Telit GE864 and GC864 Product Description
80273ST10008a Rev. 14 - 18/09/08
6.6 GC864-QUAD/PY : RoHS certificate
Reproduction forbidden without Telit Communications S.p.A. written authorization - All Rights Reserved page 52 of 62
Telit GE864 and GC864 Product Description
80273ST10008a Rev. 14 - 18/09/08
6.7 GE864-QUAD/PY: FCC Equipment Authorization
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Telit GE864 and GC864 Product Description
80273ST10008a Rev. 14 - 18/09/08
6.8 GC864-QUAD/PY: FCC Equipment Authorization
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Telit GE864 and GC864 Product Description
80273ST10008a Rev. 14 - 18/09/08
6.9 GE864-QUAD/PY: IC Equipment Authorization
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Telit GE864 and GC864 Product Description
80273ST10008a Rev. 14 - 18/09/08
6.10 GC864-QUAD/PY: IC Equipment Authorization
Reproduction forbidden without Telit Communications S.p.A. written authorization - All Rights Reserved page 56 of 62
Telit GE864 and GC864 Product Description
80273ST10008a Rev. 14 - 18/09/08
7 SAFETY RECOMMENDATIONS
READ CAREFULLY
Be sure the use of this product is allowed in the country and in the environment required. The use of
this product may be dangerous and has to be avoided in the following areas:
Where it can interfere with other electronic devices in environments such as hospitals, airports,
aircrafts, etc
Where there is risk of explosion such as gasoline stations, oil refineries, etc
It is responsibility of the user to enforce the country regulation and the specific environment regulation.
Do not disassemble the product; any mark of tampering will compromise the warranty validity.
We recommend following the instructions of the hardware user guides for a correct wiring of the
product. The product has to be supplied with a stabilized voltage source and the wiring has to be
conforming to the security and fire prevention regulations.
The product has to be handled with care, avoiding any contact with the pins because electrostatic
discharges may damage the product itself. Same cautions have to be taken for the SIM, checking
carefully the instruction for its use. Do not insert or remove the SIM when the product is in power
saving mode.
The system integrator is responsible of the functioning of the final product; therefore, care has to be
taken to the external components of the module, as well as of any project or installation issue,
because the risk of disturbing the GSM network or external devices or having impact on the security.
Should there be any doubt, please refer to the technical documentation and the regulations in force.
Every module has to be equipped with a proper antenna with specific characteristics. The antenna has
to be installed with care in order to avoid any interference with other electronic devices and has to
guarantee a minimum distance from the body (20 cm). In case of this requirement cannot be satisfied,
the system integrator has to assess the final product against the SAR regulation.
The European Community provides some Directives for the electronic equipments introduced on the
market. All the relevant information’s are available on the European Community website:
The text of the Directive 99/05 regarding telecommunication equipments is available, while the
applicable Directives (Low Voltage and EMC) are available at:
: available for download into the Website www.telit.com >Products
: accessible via E-Mail service with 48 hr replies assured under normal
Reproduction forbidden without Telit Communications S.p.A. written authorization - All Rights Reserved page 58 of 62
9 List of acronyms
Telit GE864 and GC864 Product Description
80273ST10008a Rev. 14 - 18/09/08
ACM
ASCII
AT
CB
CBS
CCM
CLIP
CLIR
CMOS
CR
CSD
CTS
DAI
DCD
DCE
DRX
DSR
DTA
DTE
DTMF
DTR
EMC
ETSI
FTA
GPRS
GSM
HF
IMEI
IMSI
IRA
ITU
IWF
LCD
LED
LF
ME
MMI
MO
MS
Accumulated Call Meter
American Standard Code for Information Interchange
Attention commands
Cell Broadcast
Cell Broadcasting Service
Call Control Meter
Calling Line Identification Presentation
Calling Line Identification Restriction
Complementary Metal-Oxide Semiconductor
Carriage Return
Circuit Switched Data
Clear To Send
Digital Audio Interface
Data Carrier Detected
Data Communications Equipment
Data Receive
Data Set Ready
Data Terminal Adaptor
Data Terminal Equipment
Dual Tone Multi Frequency
Data Terminal Ready
Electromagnetic Compatibility
European Telecommunications Equipment Institute
Full Type Approval (ETSI)
General Radio Packet Service
Global System for Mobile communication
Hands Free
International Mobile Equipment Identity
International Mobile Subscriber Identity
International Reference Alphabet
International Telecommunications Union
Inter-Working Function
Liquid Crystal Display
Light Emitting Diode
Linefeed
Mobile Equipment
Man Machine Interface
Mobile Originated
Mobile Station
Reproduction forbidden without Telit Communications S.p.A. written authorization - All Rights Reserved page 59 of 62
MT
OEM
PB
PDU
PH
PIN
PLMN
PUCT
PUK
RACH
RLP
RMS
RTS
RI
SCA
SIM
SMD
SMS
SMSC
SS
TIA
UDUB
USSD
Telit GE864 and GC864 Product Description
80273ST10008a Rev. 14 - 18/09/08
Mobile Terminated
Other Equipment Manufacturer
Phone Book
Protocol Data Unit
Packet Handler
Personal Identity Number
Public Land Mobile Network
Price per Unit Currency Table
PIN Unblocking Code
Random Access Channel
Radio Link Protocol
Root Mean Square
Ready To Send
Ring Indicator
Service Center Address
Subscriber Identity Module
Surface Mounted Device
Short Message Service
Short Message Service Center
Supplementary Service
Telecommunications Industry Association
User Determined User Busy
Unstructured Supplementary Service Data
Reproduction forbidden without Telit Communications S.p.A. written authorization - All Rights Reserved page 60 of 62
Telit GE864 and GC864 Product Description
10 Document Change Log
80273ST10008a Rev. 14 - 18/09/08
RReevviissiioonn DDaattee
DRAFT #0 Draft for comments
DRAFT #1 23/06/2005 Updated Para 2.16 Interfaces on GE864 and Pins allocation
DRAFT #2 04/08/2005 1 Overview: updated
ISSUE #3 25/01/2006 GC864 drawings and size: added
ISSUE #4 21/03/2006 DAC converter Max voltage range filtered: changed
2.22.1 GE864 orientation on the tray: updated module image
5.3 Easy Script Extension - Python Interpreter: updated schema
6 AT commands: cancelled AT commands table
7.3 GE864-QUAD/PY: RoHS certificate
7.6 GC864-QUAD/PY: RoHS certificate
ISSUE #8 08/02/2007 2.11 Power Consumption: updated operating current in GSM
general review of the document
complete revision of the document: removed camera, and come
paragraphs transferred to the HW or SW User Guide
ISSUE #9 12/11/2007 -Introduced new discaimer
-Updated temperature range values
-Added Python’s new features
-Added Multisocket paragraph
ISSUE #10 15/01/2008 Added CE mark
ISSUE #11 11/03/2008 Updated temperature specification
ISSUE #12 16/05/2008 Added new GC864-QUAD variant with SIM holder on the board
ISSUE #13 16/07/2008 Updated temperature range specification
ISSUE #14 18/09/2008 Updated applicability list
Updated temperature range specification
Updated RoHS compliance certification
Added FOTA service description
Reproduction forbidden without Telit Communications S.p.A. written authorization - All Rights Reserved page 62 of 62
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