Filter
Top Products
GTR64 http://www.matrix.es/GTR64
1.4 Main Features and Services
The GTR64 performs a set of telecom services (TS) according to GSM standard phase 2+, ETSI and ITU-
T. The services and functions of the GTR64 are implemented by issuing customised applications
embedded on the device, or by AT commands issued internally, or over the RS232 serial interface.
1.4.1 Types of Mobile Station
The GTR64 is a
a fully Quad Band capable GSM/GPRS mobile station with the characteristics shown in the
table below.
Feature GSM850 E-GSM900 GSM1800 GSM1900
Tx 824-849 880-915 1710-1785 1850-1910
Frequency
range (MHz)
Rx 869-894 925-960 1805-1880 1930-1990
Channel spacing 200kHz 200kHz 200kHz 200kHz
Number of channels 124 174 374 299
Number of TD slots 8 8 8 8
Duplex spacing 45MHz 45MHz 95MHz 80MHz
GSM power class 4 (2W) 4 (2W) 1 (1W) 1 (1W)
Modulation GMSK
Receive sensitivity <-102dBm at antenna connector
GPRS multi-slot class Class 10
1.4.2 Short Message Service
The wireless modem supports the following SMS services:
• Sending; MO (mobile-originated) with both PDU (protocol data unit) and textvmode supported
• Receiving; MT (mobile-terminated) with both PDU and text mode supported
• CBM (cell broadcast message); a service in which a message is sent to all subscribers located in one or more
specific cells in the GSM network (for example, traffic reports)
• SMS status report according to 3GPP TS 23.40
The maximum length of a text mode SMS message is 160 characters using 7-bit encoding. The wireless
modem supports up to six concatenated messages to extend this function. Concatenation is performed by the
host application.
1.4.3 Voice Calls
The wireless modem offers the capability of MO (mobile originated) and MT (mobile terminated) voice calls,
as well as supporting emergency calls. Multi-party, call waiting and call divert features are available. Some of
these features are network operator specific.
For the inter-connection of audio, the wireless modem offers balanced analogue input and output lines. The
wireless modems support HR, FR, EFR and AMR vocoders.
GTR64 Integrators Manual V.1.2 Pag. 9
Preliminary. Subject to change without prior notice