Hello! I've been wanting to design a phone for a while -- and I'm looking for recommendations for tiny quad-band GSM modules for embedded projects. These things have started turning up for machine-to- machine (telemetry) applications and the like over the past few years. In particular, the Telit series of modules (sparkfun.com) and the motorola G24 both look awesome.
Currently, some of the Telit ones (such as the GE864-PY) are smaller, but the motorola one accepts digital audio in (which is nice, because I can preprocess the voice audio). Can anyone else recommend embedded modules similar to these?
Thanks, ...Eric