Difference between H.323 and SIP
H.323 :
H.323 is a standard for real-time audio and video conferencing over the Internet. H.323 also specifies how end system are attached to Internet by circuit switched telephone network.
SIP :
Session Initiator protocol describes establishment, management and termination of multimedia session. Multimedia sessions can be Internet telephone call or video conferencing.
Difference between of H.323 and SIP :
H.323 |
SIP |
It is compatible with PSTN. |
It is not compatible with PSTN. |
H.323 is not internet compatible. |
SIP is internet compatible. |
It follows monolithic architecture. |
It follows modular architecture. |
It uses Binary message format. |
It uses ASCII message format. |
For Addressing purpose it uses Host or Telephone numbers. |
For Addressing it uses URL. |
It does not support instant messaging. |
It supports instant messaging. |
Large and complex Implementation. |
Moderate Implementation. |
Designed by ITU. |
Designed by IETF. |
Last Updated :
05 Jul, 2022
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