VGSM
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[edit] Overview
The vGSM card is a PCI adapter to make GSM network services available to the hosting system. It may be used in several applications: voice, data and SMS gateways, SMS interactive systems, remote control, etc...
[edit] General
- PCI v2.2, 5V and 3.3V signaling
- Dimensions : 154mm x 107mm (PCB) , 164mm x 129mm including SIM holder, bracket and connectors.
- FPGA based for greater flexibility. Firmware may be field-reprogrammed.
- Firmware reprogramming may be disabled with a jumper for further security
- Little-endian and Big-endian modes directly implemented in hardware
[edit] GSM Modules
- Two or four MC55 or MC56 Siemens GSM modules
- GSM900/PCS1800/PCS1900 bands for MC55
- GSM850/PCS1800/PCS1900 bands for MC56
- Phase 2/2+ compliant
- Output power: Class 4 (2 watt) in EGSM900/EGSM850, Class 1 (1 watt) in PCS1800/PCS1900
- Antenna connectors: 4, female SMA 50 Ω
[edit] UART Interfaces
- One 38400 serial port for each module
- Deep FIFOs for serials
[edit] SIM Interfaces
- Hot swappable SIM holders
- One holder directly connected to its respective module
[edit] Audio
- Balanced analog audio paths automatically synchronized with system clock
- DMA RX and TX FIFOs
- Interrupt-less audio handling
- Hardware A-law compander/decompander on each FIFO
[edit] Indications
- 4 status LEDs connected one to each module
[edit] Software support
A powerful software framework supports the vGSM-II cards under Linux and Asterisk.
