WAN Technology srnpiseygmail com WAN Connection Type WAN

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ជពកទ៤ WAN Technology srnpisey@gmail. com

ជពកទ៤ WAN Technology srnpisey@gmail. com

WAN Connection Type • យ ងអ ចធវ ក រតភជ ប រប បផស ងៗគន ។

WAN Connection Type • យ ងអ ចធវ ក រតភជ ប រប បផស ងៗគន ។ WAN ប នត ម ៣ – Point-to-Point technologies – Circuit-switched technologies – Packet-switched technologies

Packet Switching (con)

Packet Switching (con)

Common WAN Terms (con) • CSU/DSU (Channelized Service Unit/Data Service Unit) វ ជ ឧបករណដ

Common WAN Terms (con) • CSU/DSU (Channelized Service Unit/Data Service Unit) វ ជ ឧបករណដ លទទល Signal ព T 1 or T 3 technology. បនទ បមក CSU/DSU បល ង Signal ដ ល ទទលប នព Ethernet (LAN Technology ) T 1 or T 3 ដ មបបរ ជ មយ • Demarc (short for demarcation)សដ ទ ក រទទលខសតរវទ ល ក រផតល – រ លឧបករណរបស Costumer វ គជ អនកធ ន នវក រខចខ តន ន – Demarc គជ Patch-panel ដ លម នយ ងហ ច 2 port ទ 4 port Service។

WAN Encapsulation • WAN Technology operate ដណ រក រល Physical Layer , Data Link

WAN Encapsulation • WAN Technology operate ដណ រក រល Physical Layer , Data Link Layer ន OS Model ហ យចន ក Higher-Level ដចជ IP តរវ ប ន Encapsulated ន ព លបញជនឆលងក ត WAN Link • ខ ងករ មន គជ Encapsulated ន WAN – SDLC – PPP – LAP – X. 25 – ATM – SMDS

WAN Virtual Circuits • Virtual Circuits គជ Logical Circuits ដ លបងក តឡ ងដ មបទកចតតទ

WAN Virtual Circuits • Virtual Circuits គជ Logical Circuits ដ លបងក តឡ ងដ មបទកចតតទ ល ក របញជន ទ វញទ មក។ • Virtual Circuit ម ន 2 បរភ ទ Data រវ ង Network Devices – switched virtual circuits (SVCs) – permanent virtual circuits (PVCs).

WAN Switch • WAN switch រជ internetworking devices ដ លម នចរ ន ports៕ •

WAN Switch • WAN switch រជ internetworking devices ដ លម នចរ ន ports៕ • Protocol ដ លបរ សរ ប Frame Delay SMDS , X. 25 ដណ រក រនវសរទ បទ២ data link layer ន OSI model

Example image

Example image

CSU/DSU • CSU/DSU (Channelized Service Unit/Data Service Unit) វ ជ ឧបករណដ លទទល Signal ព

CSU/DSU • CSU/DSU (Channelized Service Unit/Data Service Unit) វ ជ ឧបករណដ លទទល Signal ព T 1 or T 3 technology. បនទ បមក CSU/DSU បល ង Signal ដ ល ទទលប នព T 1 or T 3 ដ មបបរ ជ មយ Ethernet (LAN Technology )

Example of CSU/DSU

Example of CSU/DSU

ISDN Terminator Adapter • Integrated Services Digital Network (ISDN) វ ជ Device ដ លម

ISDN Terminator Adapter • Integrated Services Digital Network (ISDN) វ ជ Device ដ លម នបញជលនវ digital telephony ហ យនង data transport service ដ លផតលដ យករមហនទរសពទ។

Example of ISDN adapter

Example of ISDN adapter

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