User's Manual

Page 13 of 187
TECHNICAL MANUAL
Telit GM862 PCS
Tri Band GPRS Data Terminal System Rev.1
1.11 User Interface
The user interface is managed by AT commands specified on the GSM 07.07 and 07.05
specification and listed in the chapter 2, AT Command.
1.11.1 Speech Coding
The Telit GM862-PCS vocoder supports the following rates:
• Half Rate.
• Full rate,
• Enhanced Full Rate
1.11.2 Sim Reader
The Telit GM862-PCS support phase 2 GSM11.14 - SIM 3 volts ONLY. For 5V SIM operation an
external level translator can be added.
Furthermore the Telit GM862-PCS have an internal built-in SIM card reader, so there's no need for
an external SIM housing.
The Telit GM862-PCS has an enhanced internal built-in SIM card reader that allows also hot
removal of the SIM sensing, so there's no need for an external SIM housing.
1.11.3 SMS
The Telit GM862-PCS module supports the following SMS types:
Mobile Terminated (MT) class 0 – 2 with signalling of new incoming SMS, SIM full, SMS read
Mobile Originated class 0 – 3 with writing, memorise in SIM and sending
Cell Broadcast compatible with CB DRX with signalling of new incoming SMS.
1.11.4 Real Time Clock and Alarm
The Telit GM862-PCS module supports the Real Time Clock and Alarm functions through AT
commands, furthermore an alarm output pin (GPIO6) can be configured to indicate the alarm with a
hardware line output.
1.11.5 Data/fax transmission
The Telit GM862-PCS module supports:
• Packed Data transfer GPRS Class B, Multislot Class 10.
• Data transmission according to the GSM 07.07, 07.05
• CSD up to 14.4 Kbps
• Fax service, Class 1 Group 3