3. Diferencias de xPON Objective Supporting Functionality GPON EPON High Speed Internet & TV Capacity >70 Mbps/user <30 Mbps/user Bandwidth Efficiency Downlink:94% Uplink:92%-93% Downlink:73% Uplink:61%-69% RF overlay Standardized No or Proprietary Fragmentation Standardized No Telephony, TDM, real-time Dynamic Bandwidth Allocation Standardized Proprietary Fixed framing Yes, 125 s No Secure Services Encryption Standardized AES No or Proprietary ONT management Management & Control Interface Standardized OMCI Partly standardized. Proprietary needed. Multi vendor Industry Driven Interop Yes No
4. Protocolos x-PON BPON GPON UIT EPON-GEPON IETF http://www.aptsec.org/meetings/2005/WS-BHT/Files-pres/WS-19%20050901%20NTT%20H019-APT(HS%20access1).ppt ATM frame base Generic frame base Ethernet frame base AAL1/AAL2 AAL5 TCP+UDP etc. IP Ethernet Layer 2 Layer 3 Layer 4 Layer 5 or more Layer 1 ATM cell PON-PHY T1/E1 TDM POTS Video Data TCP+UDP etc. IP Ethernet Generic frame T1/E1 TDM POTS Video Data TCP+UDP etc. Ethernet frame T1/E1 TDM Video Data IP POTS VoIP VoIP VoIP
23. Loss Budget - Example OLT V-OLT ODF In Out Patch Panel ONT 1:32 20km +2dBm 1dBm +18.5dBm +19.5dBm 0dBm +17.5dBm -17.5dBm -0 dBm -25.5dBm -6 dBm 1dB 1dB 17.5dB OSP 8dB over 20km 0.35dB loss per km WDM Splitter - 1.490nm Optical Power Level - 1.550nm Optical Power Level: “señal RF” - Element Insertion Loss
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31. Aplicaciones Also: WiMax, WiFi, Cellphone equip. Video surveillance Data Transport VDSL DSL BPL switch Mini MDU 2 – 4 homes Up to 4 POTS lines IP or RF Video Up to 100Mb data service Single Family Home