This manual describes the features and use of the GR64 GSM/GPRS modem.
This Integrators Manual for the Sony Ericsson GR44 GSM/GPRS Modem is intended for engineers and developers who need to incorporate the modem into their products. It includes confidentiality notices, publication information, and a table of contents covering all aspects of the device.
The document details mechanical dimensions, connector pin‑outs, power supply requirements, audio and serial interfaces, SIM card handling, antenna installation, safety precautions, and developer kit information. It also provides guidance on system integration, regulatory notices, and references to additional resources such as the separate user manual for the Universal Developer’s Kit.