not_IO@lemmy.blahaj.zone to Microblog Memes@lemmy.worldEnglish · 1 天前maybe sending dms across the fediverselemmy.blahaj.zoneimagemessage-square136linkfedilinkarrow-up11.2Karrow-down115file-text
arrow-up11.19Karrow-down1imagemaybe sending dms across the fediverselemmy.blahaj.zonenot_IO@lemmy.blahaj.zone to Microblog Memes@lemmy.worldEnglish · 1 天前message-square136linkfedilinkfile-text
minus-squarenonentity@sh.itjust.workslinkfedilinkEnglisharrow-up17·21 小时前SMS was never intended to be available to end users. It was built as a side channel to help field techs with diagnostics. When consumer handsets started to add features, it was co-opted to provide what we know it as today.
minus-squareAceticon@lemmy.dbzer0.comlinkfedilinkEnglisharrow-up4·11 小时前That explains why way back when I tried to read the GSM (1.x) specification out of curiosity, it turned out SMS were going via a “control channel”. Always wondered why the data for those was going via a control channel rather than some kind of data channel.
SMS was never intended to be available to end users. It was built as a side channel to help field techs with diagnostics. When consumer handsets started to add features, it was co-opted to provide what we know it as today.
That explains why way back when I tried to read the GSM (1.x) specification out of curiosity, it turned out SMS were going via a “control channel”.
Always wondered why the data for those was going via a control channel rather than some kind of data channel.