| sometimes carrier in my country have good deal for sending sms, like 0.1c per message for gsm. $1 unlimited for cdma, etc (caveat: only within-carrier, far more expensive across-carrier) the thing is i can't have 4 or 5 digits short sms number; however, that didn't stop me either :d for gsm, i use gnokii, iterating on a list of number with corresponding message is all needed for cdma, it's a bit harder since no open source program is ready-to-use-out-of-box ... basically it boils down to sending `proprietary` at commands to /dev/bla (whatever dmesg spits) or port comm (if the cdma modem only has windows driver, forcing you to) my only gripe with sms is it's 'serial' in the sense i can't 'broadcast' -- that's it, i can only send 1 sms per say 6-10 seconds (depends on how busy the network is) there's no handshake? so there's no way for me to know if the recipient gets it ... and sometimes they get 'empty' sms ... maybe the carriers' mechanism to block spam shrug that's all i know about sms, i don't know about sms-center, maybe if one has access to it, s/he can broadcasts sms just like email if someone knows more / better, please enlighten me thx |