Xircom An Intel Company GEM3501 User Manual
Core Engine GSM/GPRS Modem Developer Guide Preliminary Draft: 7/6/2001
12
Part Number: 07100026, Revision: 002
Confidential
© 2001 Xircom, Inc., an Intel company All rights reserved.
All trademarks and copyrights are the property of Xircom, Inc., an Intel company
All trademarks and copyrights are the property of Xircom, Inc., an Intel company
Listed below are the essential characteristics and assumptions regarding the form of SMS
supported by the Core Engine modem.
supported by the Core Engine modem.
!
Support of both mobile originated and mobile terminated SMS.
!
8-bit data in PDU mode
!
Message Class 1
!
Up to 140 ASCII characters per message using 8-bit data mode. (160 characters if
7bit GSM ASCII used)
7bit GSM ASCII used)
!
Notify the network when it has memory capacity available to receive one or more
SMS messages after it has previously rejected a message because its memory
capacity was exceeded
SMS messages after it has previously rejected a message because its memory
capacity was exceeded
3.7.4 Voice
The Core Engine modem has full voice capabilities, provided the necessary connections
have been made for the speaker and microphone pins on the 60-pin I/O connector. The
AT commands and their responses allow the user to enter and receive information from
the Core Engine modem. These functions include the ability for dialing, for providing on-
hook or off-hook, and for controlling other aspects of the voice call interface.
have been made for the speaker and microphone pins on the 60-pin I/O connector. The
AT commands and their responses allow the user to enter and receive information from
the Core Engine modem. These functions include the ability for dialing, for providing on-
hook or off-hook, and for controlling other aspects of the voice call interface.
The Core Engine modem supports two (2) vocoder compression algorithms for voice
communication: full-rate and enhanced full-rate (EFR)
communication: full-rate and enhanced full-rate (EFR)
3.7.5 General Packet Radio Service (GPRS)
GPRS is the next step in GSM data services: a fully packet-based protocol service with
direct access to the Internet. By bringing the best features of messaging, circuit-switched
services, and packet data into harmony, GPRS promises to make new applications even
more practical and affordable. Future releases of the Core Engine modem will support
GPRS mode. Currently, the Core Engine modem is hardware-ready for GPRS.
direct access to the Internet. By bringing the best features of messaging, circuit-switched
services, and packet data into harmony, GPRS promises to make new applications even
more practical and affordable. Future releases of the Core Engine modem will support
GPRS mode. Currently, the Core Engine modem is hardware-ready for GPRS.