ptt3i
2014-05-01, 03:25 PM
Full material about GSM from Siemens for all.
https://www.facebook.com/notes/vntelecom/gsm-full-material-from-siemens/824905940853193
BRs,
ptt3i.
https://www.facebook.com/notes/vntelecom/gsm-full-material-from-siemens/824905940853193
BRs,
ptt3i.