Projecto
Estudo de mercado - Modem GSM e Dispositivo móvel
1 - Modem GSM
Tipos de modems GSM
Um modem gsm pode ser um dispositivo externo, como o modem Wavecom Fastrack. Basta inserir o cartao SIM neste modem e conectá-lo a uma porta serie disponivel no PC.
Um modem GSM poderá ser um PC Card instalado num PC portatil, um exmplo é o Nokia Card Phone.
Um modem GSM ainda poderá ser um telefone móvel GSM com um cabo apropriado e com software (driver) para conectar a uma porta serie disponivel no PC. Telefones moveis como o Nokia 7110 com um cabo DLR-3 cable ou alguns telefones Ericsson podem ser utilizados nesta configuração.
Um modem GSM dedicado (externo ou PC Card) é usualmente preferivel à configuração que utiliza um telefone movel GSM e um cabo. Isto deve-se a questões de compatibilidade que poderá existir com os telefones moveis. Alguns telefones moveis não permitem receber correctamente mensagens de texto SMS maiores que 160 bytes (conhecido como “concatenated SMS” ou “long SMS”). Isto acontece porque estas mensagens longas sao fragmentadas e enviadas como mensagens SMS separadas, no entanto, o telefone movel faz uma tentativa de reasemblagem da mensagem antes de o colocar na interface(cabo para a porta serie) do telefone movel.
Especificações num modem
As especificações dos modulos e terminais GSM / GPRS dividem-se em:
1- Especificaçoes gerais – caracteriza-se por:
• Frequencia de Banda: Dual band (900/1800) ou Tri band (900/1800/1900);
• Tensão de alimentação;
• Potência de transmissão;
• Normas de controlo atraves dos comandos AT: 07.07 e 07.05;
• Potência de consumo e questões relacionadas com a gestão da alimentação, por exemplo: idle mode.
2- SMS – caracteriza-se por:
• MT, MO, CB, Text and PDU mode
3- GPRS
4- Fax
5 - Dados – caracteriza-se por:
• Circuit Switched Data (CSD) transmission rates: asynchronous, transparent, non-transparent
• GPRS data downlink transfer
• GPRS data uplink transfer
• Unstructured Supplementary Service Data (USSD)
• Coding scheme: CS 1, 2, 3 4
Pesquisa
A pesquisa na internet por modems GSM foi feita nos seguintes motores de busca:
www.google.com
www.yahoo.com
Foram utilizadas as seguintes keywords na procura:
• GSM Modem
• GSM module
• GSM terminal
• Embedded GSM modem
Os resultados obtidos encontram-se resumidamente na tabela: Lista dos modems, modulos e terminais GSM/GPRS
No entanto, foi efectuada uma selecção destes modems segundo vários criterios, dos quais se apontam:
• Preço ;
• Local do fornecedor – demos preferencia a fornecedores nacionais (inclusivé de Aveiro) ou de Espanha;
• Especificações desejadas;
• Informação que permite o desenvolvimento de aplicações: manuais, datasheets etc
Em seguida mostramos alguns dos modems selecionados que preenchem os requisitos e uma breve descrição das suas espeficações.
Análise
Os modulos e terminais fornecidos pela Siemens preenchem os requisitos, nomeadamente os modelos TC35, TC35T, MC35 e MC35T. O MC35 foi concebido para oferecer as mesmas funcionalidades GSM que o TC35 e para preencher os requisitos da conectividade GPRS. No entanto, MC35 utiliza uma banda base e chipset RF diferente. Alem disto, existem umas pequenas diferenças entre o TC35 e MC35 como:
• Electricas (alimentação)
• Devido à performance do GPRS, existe maior consumo de corrente enquanto decorre a transferencia de dados.
Fabricante: Télit |
Modelo: GM862- GSM |
Especificidades |
Interfaces |
• Dual-band E-GSM900 and GSM1800
• GSM: Compliant to GSM phase 2/2+
• Output power:
– Class 4 (2W) at GSM900
– Class 1 (1W) at GSM1800
• Control via AT commands standard ETSI 07.05 e 07.07(ITU, GSM, GPRS and telit supplementary)
• Supply voltage range 3.4V ÷ 4.2V, Nominal: 3.8 V
SMS:
• SMS Mobile originated (MO) and mobile Terminated (MT)
• SMS cell broadcast (CB – DRX)
• EMS (concatenated messages)
Data:
• Circuit Switched Data (CSD) up to 14.4 kbps
• Coding schemes CS1, CS2, CS3, CS4
• PBCCH support |
- 50 pin industrial conector:
• power supply
• serial Bi-directional bus
• 7 general purpose I/O ports
• internal / external SIM 3V
• Analog audio
- V.24 serial link
• Baud rate from 300 to 115.2kbps
• Autobauding from 1200 to 57.600bps
- 50 Ohm antenna connector |
Fornecedores possiveis: |
www.roundsolutions.com |
|
|
Preço: |
Unit € 88 |
|
|
Fabricante: Télit |
Modelo: GM862- GPRS |
Especificidades |
Interfaces |
• Dual-band E-GSM900 and GSM1800
• GSM: Compliant to GSM phase 2/2+
• Output power:
– Class 4 (2W) at GSM900
– Class 1 (1W) at GSM1800
• Control via AT commands standard ETSI 07.05 e 07.07(ITU, GSM, GPRS and telit supplementary)
• Supply voltage range 3.4V ÷ 4.2V, Nominal: 3.8 V
SMS:
• SMS Mobile originated (MO) and mobile Terminated (MT)
• SMS cell broadcast (CB – DRX)
• EMS (concatenated messages)
Data:
• Circuit Switched Data (CSD) up to 14.4 kbps
• GPRS class 8 up to 85.6 KBps
• Coding schemes CS1, CS2, CS3, CS4
• PBCCH support |
- 50 pin industrial conector:
• power supply
• serial Bi-directional bus
• 7 general purpose I/O ports
• internal / external SIM 3V
• Analog audio
- V.24 serial link
• Baud rate from 300 to 115.2kbps
• Autobauding from 1200 to 57.600bps
- 50 Ohm antenna connector
|
Fornecedores possiveis: |
www.roundsolutions.com |
|
|
Preço: |
Unit € 99 |
|
|
Fabricante: round solutions |
Modelo: TER-GX100S |
Especificidades |
Interfaces |
• Dual-band E-GSM900 and GSM1800 designed for data, fax, SMS and voice applications
• GSM: Compliant to GSM phase 2+ specifications ( Normal MS )
• Control via AT commands Standard(GSM 07.07 e 07.05) and AT+
• Input voltage: 8V - 40V, Input current @ 12V:
• 8mA in idle mode
• 150mA by output power 2W
SMS:
• SMS Mobile originated (MO) and mobile Terminated (MT)- point 2 point
• SMS cell broadcast
• Text and PDU
Data / Fax:
• Circuit Switched Data (CSD) asynchronous, transparent and non transparent up to 14.4 kbps
• Automatic fax group 3 (class 1)
• Coding schemes CS1, CS2, CS3, CS4 |
• RS-232 through D-Type 9 pin connector
• RJ11 voice connector
• Power supply through molex 4 pin connector
• SMA antenna connector
• Toggle spring SIM card reader 3 V |
Fornecedores possiveis: : |
www.roundsolutions.com |
|
|
Preço: |
Unit € 148 |
|
|
Fabricante: round solutions |
Modelo: TER-GX101S |
Especificidades |
Interfaces |
• Dual-band GSM GPRS modem / terminal (E-GSM900 and GSM1800) designed for GPRS, data, fax, SMS and voice applications
• GSM: Full compliant to GSM phase 2+ specifications ( Normal MS )
• Control via AT commands Standard(GSM 07.07 e 07.05) and AT+
• Input voltage: 8V - 40V, Input current @ 12V:
• 8mA in idle mode
• 150mA by output power 2W
• embedded IP/ TCP stack
SMS:
• SMS Mobile originated (MO) and mobile Terminated (MT)- point 2 point
• SMS cell broadcast
• Text and PDU
GPRS / Data / Fax:
• Circuit Switched Data (CSD) asynchronous, transparent and non transparent up to 14.4 kbps
• Packed Data (GPRS class B, class 8)
• Automatic fax group 3 (class 1)
• Coding schemes CS1, CS2, CS3, CS4 |
• RS-232 through D-Type 9 pin connector
• RJ11 voice connector
• Power supply through molex 4 pin connector
• SMA antenna connector
• Toggle spring SIM card reader 3 V |
Fornecedores possiveis: |
www.roundsolutions.com |
|
|
Preço: |
Unit € 155 |
|
|
Fabricante: round solutions ------------só disponivel a partir de NOV / 2003---------------- |
Modelo: TER-GX102S |
Especificidades |
Interfaces |
• Tri band GSM GPRS modem / terminal (E-GSM900, GSM1800 and 1900MHz) designed for GPRS, data, fax, SMS and voice applications
• GSM: Full compliant to GSM phase 2+ specifications ( Normal MS )
• Control via AT commands Standard(GSM 07.07 e 07.05) and AT+
• Input voltage: 8V - 40V, Input current @ 12V:
• 8mA in idle mode
• 150mA by output power 2W
• embedded IP/ TCP stack
SMS:
• SMS Mobile originated (MO) and mobile Terminated (MT)- point 2 point
• SMS cell broadcast
• Text and PDU
GPRS / Data / Fax:
• Circuit Switched Data (CSD) asynchronous, transparent and non transparent up to 14.4 kbps
• Packed Data (GPRS class B, class 10)
• Automatic fax group 3 (class 1)
• Coding schemes CS1, CS2, CS3, CS4 |
• RS-232 through D-Type 9 pin connector
• RJ11 voice connector
• Power supply through molex 4 pin connector
• SMA antenna connector
• Toggle spring SIM card reader 3 V |
Fornecedores possiveis: |
www.roundsolutions.com |
|
|
Preço: |
Unit € 155 |
|
|
Fabricante: Siemens |
Modelo: MC35 |
Especificidades |
Interfaces |
• Dual-band E-GSM900 and GSM1800 for Voice, Data, SMS, Fax
• GSM: Compliant to GSM phase 2/2+
• Output power:
– Class 4 (2W) at GSM900
– Class 1 (1W) at GSM1800
• Control via AT commands standard ETSI 07.05 e 07.07
• Single Supply voltage 3.3V - 4.8V
SMS:
• SMS Mobile originated (MO) and mobile Terminated (MT)
• SMS cell broadcast (CB )
• text and PDU mode
Data:
• Circuit Switched Data (CSD) transmission rates:2.4, 4.8, 9.6, 14.4 kbps, non-transparent
• GPRS multi -slot class 8 and mobile station class B
• GPRS data downlink transfer: max. 85.6kbps
• GPRS data uplink transfer: max. 21.4kbps
• Coding schemes CS1, CS2, CS3, CS4
• PBCCH support
Fax:
• Group 3: class 1, class 2 |
RS-232 (CMOS level) bi-directional bus for commands / data using AT commands.
MC35 supports Multiplex mode according to the GSM 07.10 Multiplexer Protocol and enables one physical serial interface to be partitioned into three virtual channels. This allows you to take advantage of up to 3 simultaneous sessions on the serial interface. For example, you can transfer data over one channel while two further channels are free to control the GSM engine with AT commands.
External SIM card reader has to be connected via interface connector (note that card reader is not part of MC35)
|
Fornecedores possiveis: |
BCE - AVEIRO |
|
Preço: |
Unit €180 |
|
Fabricante: Siemens |
Modelo: MC35 terminal |
Especificidades |
Interfaces |
• Dual-band EGSM900 and GSM1800
• GPRS multi-slot class 8
• GPRS mobile station class B
• Compliant to GSM phase 2/2+
• Output power:
– Class 4 (2W) at EGSM900
– Class 1 (1W) at GSM1800
• Control via AT commands standard ETSI 07.05 e 07.07
• SIM application tool kit
• Supply voltage range 8V...30V
SMS:
• Point-to-point MT and MO
• SMS cell broadcast
• Text and PDU mode
Data:
• CSD up to 14.4 kbps
• USSD
• Non transparent mode
• V.110
• GPRS: max. 85.6 kbps (downlink)
• Coding schemes CS1, CS2, CS3, CS4
• PPP-stack |
• Plug-in power supply
• Handset audio interface
• Mini-SIM card reader
• Antenna connector FME (male)
• V.24/V.28 interface on the 9-terminal Sub-D-socket
• Operating status LED
• Ignition lead on the 6-pin Western connector
• Antennas, SIM cards, power supply units, RS232 connection cable, handsets,mounting set for DIN rail can be obtained on the open market
|
Fornecedores possiveis: |
webpage
|
BCE - AVEIRO |
Preço: |
Unit €140 + iva |
Unit €235 |
Fabricante: Siemens |
Modelo: TC35 |
Especificidades |
Interfaces |
• Dual-band EGSM900 and GSM1800
• Compliant to GSM phase 2/2+
• Output power:
- Class 4 (2 W) at EGSM900
- Class 1 (1 W) at GSM1800
• Control via AT commands standard ETSI 07.05 e 07.07
• Supply voltage range 3.3...5.5 V
• Power consumption:
• Idle mode (registered) < 3.5 mA
• Speech mode 300 mA (average) Typ. 2.3 A (peak)
• Power down 100 µ A
SMS:
• Point-to-point MO and MT
• SMS cell broadcast
• Text and PDU mode
Fax:
• Group 3, Class 2
Data:
• CSD up to 14.4 kbps (as of 06/2001)
• USSD
• Non transparent mode
• V.110
|
- 40pin connector:
• Power supply
• SIM 1.8/3 V
• RS232 bi-directional bus
• Autobauding
• Analog audio
- 50 Ohm-antenna connector
|
Fornecedores possiveis: |
BCE - AVEIRO |
|
Preço: |
Unit €165 |
|
Fabricante: Siemens |
Modelo: TC35 terminal |
Especificidades |
Interfaces |
•Dual-Band EGSM900 and GSM1800
• Compliant to GSM phase 2/2+
•Output power:
-
Class 4 (2 W) for EGSM900
-Class 1 (1 W) for GSM1800
•Control via AT commands standard ETSI 07.05 e 07.07
•SIM Application Toolkit
•Multiplex RS232 interface
•Supply voltage range 3.3 ... 4.8 V
•Power save mode
•Power consumption:
-
Idle mode (registered) 25 mA
•Speech mode 300 mA
•Peak <2.5 A
•Power down 50 µ A
•Sleep mode 3.5 mA
Specifications for SMS:
•Point-to-point MO and MT
• SMS cell broadcast
•Text and PDU mode |
- 40-pin ZIF connector:
• Power supply
• SIM 3 V
•RS232 bi-directional bus
•Autobauding
•Analog audio
- Antenna connector GSC, 50 ? |
Fornecedores possiveis: |
webpage
|
BCE - AVEIRO |
Preço: |
Unit €170 + iva |
Unit €220 |
2 - Dispositivo móvel
Palm OS versus Pocket PC 2002 |
Feature |
Palm OS 4.0 |
Pocket PC 2002 |
THE BASICS |
|
|
Address book |
yes |
yes |
Calendar |
yes |
yes |
Note pad |
yes |
yes |
Email |
yes |
yes |
Task list |
yes |
yes |
Calculator |
yes |
yes |
Handwriting recognition |
Graffiti, on-screen keyboard |
Character Recognizer, Transcriber, on-screen keyboard |
PC CONNECTIVITY |
|
|
Works with PCs |
yes |
yes |
Works with Macs |
yes |
no |
Desktop PIM included |
Palm Desktop |
Outlook 2002 |
Synchronisation software |
HotSync Manager 4.0 |
ActiveSync 3.5 |
Syncs with Outlook |
requires additional software (usually provided with handheld) |
yes |
Syncs with Lotus Notes |
requires additional software (not usually provided with handheld)</< FONT> |
requires additional software (not usually provided with handheld)</< FONT <> |
MOBILE OFFICE |
|
|
MS Word document support |
third-party software available |
Pocket Word |
MS Excel document support |
third-party software available |
Pocket Excel |
MS PowerPoint document support |
third-party software available |
third-party software available |
Adobe Acrobat document support |
third-party software available |
third-party software available |
Voice recorder |
no |
yes |
MOBILE INTERNET |
|
|
HTML browser |
third-party software available |
Pocket Internet Explorer |
WAP browser |
third-party software available |
Pocket Internet Explorer |
Offline browsing browser |
third-party software available (AvantGo) |
Pocket Internet Explorer |
Instant messaging client |
third-party software available |
MSN Messenger |
VPN client |
third-party software available |
yes |
Terminal client |
third-party software available |
yes |
Macromedia Flash support |
no |
third-party software available |
ENTERTAINMENT |
|
|
MP3 playback support |
no |
Windows Media Player |
Video playback |
third-party software available |
Windows Media Player |
HARDWARE SUPPORT |
|
|
16-bit colour support |
yes |
yes |
Screen resolution |
160 x 160 pixels |
320 x 240 pixels |
Processor |
33MHz Motorola Dragonball VZ |
206MHz Intel StrongARM SA-1110 |
SOFTWARE SUPPORT |
|
|
Number of third-party applications on Download.com |
1,840 |
386 |
SECURITY |
|
|
Password protection |
yes |
yes (2 levels) |
Produtos:
PDA:
TMN e Optimus comercializam:
• Qtek 1010 pelo preço 679,90 €
PALM:
www.handspring.com (USA) :
• Treo 270 pelo preço $99
• Treo 600 pelo preço $499
www.telemoveis.com :
• Zircom €889,00
Ferramentas de desenvolvimento:
PALM: Palm OS adquirido por a Universidade
PDA: Embedded Visual Tools 3.0 –2002 edition (free):
• Microsoft embedded visual C++
• Microsoft embedded basic 3
• Software development kit for pc pocket
• Visual Studio .Net 2003 (.Net Compact Framework)
Telemóveis
1 - Qtek 1010 (€679,90):
Plataforma
- Pocket PC 2002 Phone Edition
- Combinação GSM/GPRS e PDA
- GSM/GPRS pode ser desligado, funcionando unicamente como PDA
Características físicas
Funcionalidades PDA
- Processador Intel Strong ARM 206MHz RISC
- 32 MB ROM + 32 MB RAM
- Suporta SD card / MMC card
- Data Bus de 32-bit
Funcionalidades GSM/GPRS
- GSM dual Band
- Chamada em espera, chamada em conferência, ...
- SMS integrado com o Pocket Outlook
- Browser Wap/HTML integrado com o Pocket Internet Explorer
- 99 números de marcação rápida
Autonomia
- 3 a 5 horas em conversação
- 10 horas em modo PDA
- 150 horas em standby
- Bateria recarregável, Li-Hon Polymer - 3 horas de carregamento
Outras características
- Ecran Reflective TFT display (240x320 pixel) com 4096 Cores - Touch Sensitive
- Cradle de mesa para carregamento e ligação ao PC
- Gravação de chamada
- Modo altifalante
- Aúdio MP3 estério
- Microfone, altifalante e earphone incluídos
- Infravermelhos IrDA SIR x 1
|
2 - Zircom GSM/PDA (€889,00)
Dados gerais |
Telemóvel |
|
Sim |
PDA |
|
Sim |
Dimensões |
|
48x100x1 mm |
Peso |
|
130g |
Ano de nascimento |
|
2003 |
Telefonia |
Sistema |
|
900/1800 |
Cartão SIM |
|
Plug-in |
VibraCall |
|
Sim |
Voice Dial |
|
Sim |
EFR (Enhanced Full Rate) |
|
Sim |
Chamada em espera |
|
Sim |
Chamada em conferência |
|
Sim |
Identificação de chamada |
|
Sim |
Recusa de identificação |
|
Sim |
Aviso de débito |
|
Sim |
Conectividade |
GPRS |
|
Sim |
Bluetooth |
|
--- |
IrDA (infra-vermelhos) |
|
Sim |
WAP |
|
Sim |
Modem |
|
Sim |
Data/fax |
|
Sim |
Mensagens escritas |
Recepção de SMS |
|
Sim |
Envio de SMS |
|
Sim |
MMS |
|
Sim |
T9 |
|
--- |
Bateria |
Bateria |
|
Li-ion 950 mAh |
Autonomia conversação |
|
2h |
Autonomia em stand-by |
|
100h |
Aplicações |
Email |
|
Sim |
GPS |
|
Não |
Câmara fotográfica |
|
Sim |
Jogos |
|
Sim |
Calculadora |
|
Sim |
Organizer |
|
Sim |
Alarme |
|
Sim |
Outras Características |
Memória |
|
MASK ROM 16 MB, SDRAM 16MB, Flash 4MB |
Nº de cores |
|
4096 colors |
Ecrã a cores |
|
260.000 cores, 176x240 pixeis, TFD |
Extas |
|
Palm OS 4.1, CPU-Motorola Dragonball 33 Mhz |
|


|
|
Product Specifications
Item |
Treo smartphone |

|
Radio |

Treo 270:
- GSM/GPRS
- 900/1900 MHz
- World phone

Treo 300:
- CDMA 2000 (1xRTT)
- 1900MHz
- Nationwide coverage

|
Processor
Technology |

33 MHz Motorola Dragonball VZ

|
Memory |

16 MB

|
Battery |

Rechargeable Lithium Ion

Treo 270: up to 3 hours talk time, 150
hours standby time

Treo 300: up to 2.5 hours talk time,
150 hours standby time

|
Palm OS
Version |

Palm OS 3.5.2H

|
Built-in
Software |

PhoneBook
Instant Lookup
Date Book Plus
SMS Messages (Treo 300—receive only)
Blazer Web Browser
To Do List
Memo Pad
Advanced Calculator
CityTime world clock
Expense 1
Desktop synchronization:
- Palm™ Desktop
- HotSync® Manager
- Link to Microsoft Outlook 2 (Windows
only)

Email options:
- Treo Mail™ (sold separately)
- A variety of solutions from your
mobile service providers and other
third-party developers (see our
Software section for more
information)

|
Available Color |

Treo 270: Steel Gray

Treo 300: Silver

|
Size |

Treo 270: 4.2" x 2.8" x 0.82"
(10.8cm x 7.1cm x 2.1cm)

Treo 300: 4.4" x 2.8" x 0.82"
(11.2cm x 7.1cm x 2.1cm)

|
Weight |

Treo 270: 5.4 oz

Treo 300: 5.7 oz

|
IR |

Yes

|
Display |

Over 4,000 colors (12-bit color,
backlit)

|
Additional
Features |

Built-in, backlit keyboard
Protective flip lid
Personal speakerphone
Rocker switch
Ringer switch with vibrate option
Headset jack
Touch-screen with stylus
Infrared (IR) communication
Palm OS® compatible
Mute button

|

|

|

|
|
|
Item |
Product Specifications |
Treo smartphone |
|

|
Radio |

GSM/GPRS (AT&T Wireless, Cingular Wireless, T-Mobile
and others):
- 850/900/1800/1900 MHz world phone
CDMA (Sprint):
- 800/1900 MHz nationwide coverage

|
Processor
Technology |

144 MHz ARM processor

|
Memory |

32 MB RAM (24 MB user-available)

|
Battery |

Rechargeable Lithium Ion

GSM/GPRS:
- Up to 6 hours talk time
- Up to 240 hours (10 days) standby time

CDMA:
- Up to 4 hours talk time
- Up to 240 hours (10 days) standby time
Add up to 3 hours of additional talk time and 180 hours
of standby with an external battery pack.

|
Palm OS
Version |

Palm OS 5.2.1H

|
Included
Software |

Built-in software
Contact List with Instant Lookup
Calendar
SMS
MMS/Picture Mail
Blazer Web Browser
Camera plus software, including photo viewer
To Do List
Memo Pad
Advanced Calculator
CityTime world clock
Desktop synchronization:
- Palm™ Desktop 4.1 for Windows and Macintosh
- HotSync® Manager
- Link to Microsoft Outlook (Windows
only)

Email options:
GSM/GPRS:
- Included POP3 email client
CDMA:
- PCS Business Connection
Also available: A variety of solutions from your mobile service
providers and other third-party developers, including Visto's
MessageXpress from the company that brought us Treo Mail
(see our Software section for more information)
Third party software:
Documents To Go
Sheet To Go
SplashID
SplashMoney
SplashShopper
Klondike
Zap! 2016

|
Available
Color |

GSM/GPRS: Silver

CDMA: Carbon

|
Size |

4.4 x 2.4 x 0.9 inches
(11.2 x 6.0 x 2.2 cm)

|
Weight |

GSM/GPRS: 5.9 ounces (168 grams)

CDMA: 6.2 ounces (175 grams)

|
IR |

Yes

|
Display |

Bright CSTN backlit display

|
Expansion |

SD/MMC, SD I/O-ready

|
MP3-
capable |

Yes, with third-party software application. (SD memory card
required. To use with standard stereo headphones you will also
need a stereo headset adapter.)

|
Camera |

VGA, 640 by 480 resolution, 0.3 mega pixels, automatic light
balancing digital camera

|
Additional
Features |

Backlit keyboard
Speakerphone
Vibrate mode
Touch-screen with stylus
Infrared (IR) communication
16-channel MIDI polyphonic ring tones
Stereo audio headset-compatible
External volume buttons and ringer/silent switch

|

|

|

|
|
|