300 likes | 483 Vues
???????? ???? ??? ???? ????????? . . 3. ????? ??? ????????? ????????? . ??? ????? ?????? ?????? ???? ???? ???? ?????? ??????? ????? ??? ?????? ??? ??????? ??????? ?? ???? ?????? ?????? ??????? .????? ??? ????? ???????? (NRZ-L) ,(HDB3) , (AMI). ???? ?? ????? ?????? ????? ?????? ???????. ???? ??? ??
E N D
1. Point to Point Protocol??????? ???? ??? ????
Eng.Abdulatif zeno
Riyadh Teachers College
2. ???????? ???? ??? ???? ?????????
3. 3 ????? ??? ????????? ????????? ??? ????? ?????? ?????? ???? ???? ???? ?????? ??????? ????? ??? ?????? ??? ??????? ??????? ?? ???? ?????? ?????? ??????? . ????? ??? ????? ???????? (NRZ-L) ,(HDB3) , (AMI). ???? ?? ????? ?????? ????? ?????? ???????. ???? ??? ????? ???????? ??? ??? ??? ??????? ???????? ????????, ??? ??? ?????? ????????? ????????? ???????? ?????: RS-232-E V.35 ??????? ????????? ????? ?????? (HSSI)