I believe there is a CDMA version available for appropriate markets. The European models have a Siemens SL35 GSM/GPRS Modem. From MC35 specsheet:
Table 1: MC35 key features
Feature Implementation
Transmission Voice, Data, SMS, Fax
Power supply Single supply voltage 3.3V Π4.8V
Frequency bands Dual Band EGSM 900 and GSM1800
(GSM Phase 2+
GSM class Small MS
Transmit power Class 4
(2W
) for EGSM900
Class 1
(1W
) for GSM1800
GPRS connectivity GPRS multi-slot class 8
GPRS mobile station class B
Temperature range Normal operation: -25°C to +55°C
Restricted operation: -29°C to -25°C and +55°C to +70°C
Storage: -40°C to +85°C
Temperature control and automatic shutdown
Constant temperature control prevents damage from the module when the
specified temperature range is exceeded. When an emergency call is in
progress the automatic temperature shutdown functionality is deactivated.
DATA GPRS:
CSD:
GPRS data downlink transfer: max. 85.6 kbps
(see Table 2
)
GPRS data uplink transfer: max. 21.4 kbps
(see Table 2
)
Coding scheme: CS-1, CS-2, CS-3 and CS-4
MC35 supports the two protocols PAP
(Password Authentication
Protocol
) and CHAP
(Challenge Handshake Authentication Protocol
)
commonly used for PPP connections.
Support of Packet Switched Broadcast Control Channel
(PBCCH
) allows
you to benefit from enhanced GPRS services when offered by the
network operators.
CSD transmission rates: 2.4, 4.8, 9.6, 14.4 kbps, non-transparent, V.110
Unstructured Supplementary Services Data
(USSD
) support
Table 2: Coding schemes and net data rates over air interface
Coding scheme 1 Timeslot 2 Timeslots 4 Timeslots
CS-1: 9.05 kbps 18.1 kbps 36.2 kbps
CS-2: 13.4 kbps 26.8 kbps 53.6 kbps
CS-3: 15.6 kbps 31.2 kbps 62.4 kbps
CS-4: 21.4 kbps 42.8 kbps 85.6 kbps
The data rates supported are a function of your local network.
Hope this helps. For GSM1900 I guess you could swap the module for the US market model, sourced locally? It's a plug-in unit
(internally
)
hope this helps
Chris
