The term VoIP is often used to describe general IP telephony technology. Behind this term lies a range 9L0-509 of different protocols, languages used to communicate between a range of different devices and vendors.
These protocols are one of the most important factors in choosing a VoIP solution. It is generally 9L0-402 Questions impossible to get different devices to communicate, unless they support the same protocol.
[edit] VoIP Protocols
The following protocols are associated with VoIP voice call termination and inter-gateway communication.
H.323 - H.323 is used by many commercial vendors for IP telephony, It is a suite of protocols which includes H.245, Q.931, etc. This suite takes care of session establishment 9L0-509 between phone and switch and is heavily based on the Integrated Services Digital Network (ISDN) signalling protocols. Signalling part is also taken care by this protocol. This suite uses RTP, RTCP, RSVP for actual data transfer and QOS between phones.
SIP (Session Initiation Protocol) - SIP is a standard developed by the for use in establishing Apple 9L0-402 multimedia sessions such as voice, instant messaging and video, amongst other applications.
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