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Basic voice over IP

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VoIP basics ABL style
Steven De Baerdemaeker
FlashCards por Steven De Baerdemaeker, atualizado more than 1 year ago
Steven De Baerdemaeker
Criado por Steven De Baerdemaeker quase 6 anos atrás
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Resumo de Recurso

Questão Responda
1. CME Router 2. SCCP 1. Call Manager - Gateway 2. Skinny Client Control Protocol (gebruikt TCP/IP -> CME Router) Commsprotocol voor hardware met beperkte CPU en geheugen
1. SIP 1. Session Initiation Protocol (Internet) Multimediacomms, vergelijkbaar met H.323 (ITU / Telefonie)
RTP Real-time Transport Protocol: Transport van real-time datapakketten Multimediastreaming (1 stream per richting) Real-time = UDP = Geen verzekerde aflevering / Geen QoS fties
RTCP RTP Control Protocol: Monitor transmissiestatistieken + QoS Feedback kwaliteit RTP data distr: round-trip time delay, Jitter, Packet-Loss, Packet Count Sync van meerdere streams Eigen UDP connectie, optioneel protocol
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Gedecentraliseerde VoIP Architectuur SCCP = Comms met GW / CME RTP en RTCP stream tss eind telefoons => idem gecentraliseerde VoIP H.323 Protocol suite = Comms tss GW en Gatekeeper (GK)
H.323 CoIP nettwerk componenten: Terminal 1. LAN client endpoint - Voice - Audi/Video = Optioneel Multipoint / Ad-hoc / Multicast
GW - Comms tss H.323 terminals en terminals aan IP based netwerk of ander H.323-GW - Call admission control op basis van toegekende rechten (internat / nat / intern)
GK Belangrijkste onderdeel van H.323 Functies: - Directory server (Gebruik IP en naamgeving) - Supervisie (Call admission - bandbreedte limiet) -Call signaling (Call routing - Multipoint) -Call Mgmt
MCU Multipoint Control Units 3 of meer terminals aan multipoint conferentie Gecentraliseerd (met MCU) Gedecentraliseerd (zonder MCU) Mixed Multipoint Verminderen RTP stromen
H.225 RAS H.225 Call Control (Setup) Signalling H.245 Control Signaling (Media ctl en transport) Registration, Admission, Status Tss eindpunten (term, GW) en GK Connectie maken tss 2 H.323 terminals Ctl - Oper overschouwen
Call Routing with GK - Address translation (IP <-> Tel nrs) - Admission ctl (Req,Rej,Confirm) - Bandwith ctl (Req,Rej,Confirm) - Zone mgmt Optie (extra restricties): -Call Auth , Call Mgmt , Bandwith mgmt -Call ctl signalling (Direct vs GK Routed)
H.323 Call Setup H.245 Call Control - Capability Negotiation - Master / Slave determination - Logical channel signalling
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