PWG acts as a dual mode mobile phone offering seamless voice and data connectivity to multiple communication networks viz. GSM/GPRS, WiFi and VoIP. To access these networks and use the features offered, users can make use of existing Bluetooth enabled PDA/Notebook devices.
Bluetooth
- Bluetooth is used as front-end connectivity between PDA and PWG. Using Bluetooth, PWG can be used to make/receive calls, browse internet and for configuration purposes
- Affix Bluetooth stack has been used
- Data transfer between PDA and PWG is done using Bluetooth Serial Port Profile. It supports a bandwidth of 500 kbps
- Dial-Up Networking profile connects PDA to either GPRS or WiFi networks thus enabling internet browsing on PDA
- Headset profile (HSP) connects to PWG and can be used to make/receive calls from GSM or VoIP. It also has a feature of transferring a call to or from a PDA
- Cordless telephony profile (CTP TL) has been implemented to make use of a third party network through any standard CTP Gateway
- Secured connection between all connected Bluetooth devices using Bluetooth pairing
GSM
- Dual SIM, Quad Band GSM
- Conformance with standards for GSM AT command set (07.05 and 07.07)
- Provides Call Control features
- SMS and Phone Book handling
- GPRS: Mobile Station Class B
WiFi
- WiFi confirms to IEEE 802.11b standard
- Philips BGW211 chipset with SPI interface
- Supports up to 128 bit WEP for security
- Provides 802.1x Authentication
- Static IP or DHCP
- Automatic or manual selection of hotspot
VoIP
- VoIP confirms following standards:
- SIP - RFC 3261
- SDP - RFC 2327
- RTP - RFC 1889
- RTP AV Profile - RFC 1890
- Codecs supported: G.711a, G.711u, G.723.1, G726 and G.729ab
- Call Control features, DTMF generation
- Seamless voice connectivity while roaming
OS, Drivers and Stacks
- Embedded Linux porting
- Drivers - USB, PMU, Flash driver, Device drivers for WiFi-SPI, Bluetooth-HCI, Codec driver, Keyboard, LCD
- Stacks - Bluetooth, Protocol stacks for VoIP (SIP, RTP), TCP/IP, PPP
- File systems - JFFS2, CRAM-FS
Application
- Phone Applications
- VoIP Client
- Phone Book Client
- SMS Client
- Power Management
- BT, WiFi, VoIP Configuration