•CSD (Circuit Switched Data)

The GS64 wireless modem is capable of establishing a CSD communication at 9.6 kbps over the air.

2.3.5GPRS Multi-Slot Support

GSM Multi-slot classes supported by Gx64 devices

 

Multislot Class

 

 

Maximum slot allocation

 

 

 

Allowable

 

 

Max data rate

 

 

 

 

Downlink

 

Uplink

 

Active

 

 

Configuration

 

 

 

 

 

 

8

 

 

4

 

1

 

5

 

 

 

1 up; 4 down

 

8-12Kbps Send

 

 

 

 

 

 

 

32-48Kbps Receive

 

 

 

 

 

 

 

 

 

 

 

 

1 up; 4 down

 

8-12Kbps Send

10

 

 

4

 

2

5

 

 

 

 

32-48Kbps Receive

 

 

 

 

 

 

2 up; 3 down

 

16-24Kbps Send

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

24-36Kbps Receive

2.3.6 SIM Card

The GS64 supports an external SIM card through its system connector. Both 3V and 1.8V SIM technology is supported. Older, 5V SIM technology is not supported.

A mechanical variant of the GS64 also supports an on-card SIM. For dual SIM support, automated SIM-switching is available. Only one SIM is active at any one time, it is not possible to concurrently register on more than one network.

2.3.7 Power Consumption

 

 

Feature

 

 

 

 

Sleep Mode

 

 

 

Idle Mode

 

 

 

Transmit

 

 

 

 

 

 

 

DRX 8

 

 

 

 

 

 

Operation

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

GSM850 & E-GSM900

Voice/CSD

 

 

1.6 mA

 

 

17 mA

 

 

2000 mA

 

 

Data (GPRS)

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

GSM1800 & GSM1900

Voice/CSD

 

 

1.6 mA

 

 

16 mA

 

 

1450 mA

 

 

Data (GPRS)

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

The power consumption figures shown represent average current for maximum transmitted power, single uplink (transmit) slot, single downlink (receive) slot. The module will consume more average power in different multi-slot configurations, the worst case being that of two uplink and three downlink slots.

LZT 123 1836

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