
XT65/XT75 Hardware Interface Overview
2.1 Key Features at a Glance
s
XT65_XT75_HO_v00.130
Page 15 of 58
2006-10-12
Confidential / Preliminary
SMS
Point-to-point MT and MO
Cell broadcast
Text and PDU mode
Storage: SIM card plus 25 SMS locations in mobile equipment
Transmission of SMS alternatively over CSD or GPRS. Preferred mode can be
user defined.
Fax
Group 3; Class 1
Audio
Speech codecs:
Half rate HR (ETS 06.20)
Full rate FR (ETS 06.10)
Enhanced full rate EFR (ETS 06.50/06.60/06.80)
Adaptive Multi Rate AMR
Speakerphone operation, echo cancellation, noise suppression, DTMF, 7 ringing
tones
GPS Features
Supported Protocol
NMEA-0183, RTCM v2.2, UBX binary protocol
GPS modes
GPS, Assisted GPS (AGPS), Differential GSP (DGPS), Satellite Based Augmen-
tation Systems (SBAS)
Position accuracy
10-15m, with DGPS/SBAS 1-3m
Start-up times
Hot start < 3.5s
Warm start 33s, average
Cold start 34s, average
Sensitivity
Active antenna:
Aquisition sensitivity: -141dBm
Tracking sensitivity: -158dBm
At antenna connector:
Aquisition sensitivity: -139dBm
Tracking sensitivity: -156dBm
General
Receiver 16 channel, L1 1575.42 MHz, GPS part controlled by GSM baseband
controller, Java engine or via application (ASC0)
Software
AT commands
AT-Hayes GSM 07.05 and 07.07, Siemens
AT commands for RIL compatibility (NDIS/RIL)
Microsoft
TM
compatibility
RIL / NDIS for Pocket PC and Smartphone
Java platform
JDK Version: 1.4.2_09
Java Virtual Machine with APIs for AT Parser, Serial Interface, FlashFileSystem
and TCP/IP Stack.
Major benefits: seamless integration into Java applications, ease of program-
ming, no need for application microcontroller, extremely cost-efficient hardware
and software design – ideal platform for industrial GSM applications.
The memory space available for Java programs is around 1.2 MB in the flash file
system and around 400kB RAM. Application code and data share the space in
the flash file system and in RAM.
Feature
Implementation