No relevant resource is found in the selected language.

This site uses cookies. By continuing to browse the site you are agreeing to our use of cookies. Read our privacy policy>Search


To have a better experience, please upgrade your IE browser.


Voice Feature Guide 01

Rate and give feedback:
Huawei uses machine translation combined with human proofreading to translate this document to different languages in order to help you better understand the content of this document. Note: Even the most advanced machine translation cannot match the quality of professional translators. Huawei shall not bear any responsibility for translation accuracy and it is recommended that you refer to the English document (a link for which has been provided).
H.248/SIP over SCTP

H.248/SIP over SCTP

Currently, most devices adopt H.248/SIP over UDP. H.248.4 recommends H.248/SIP over SCTP, which implements the message retransmission at the application layer through SCTP.

Compared with the UDP protocol, the SCTP protocol has the following advantages:

  1. Reliability: Messages can be transmitted fast and reliably through SCTP.
  2. Multi-homing: With the multi-homing feature, multiple IP addresses are supported on an SCTP endpoint. That is, an SCTP endpoint can use multiple physical network ports to enhance the endpoint reliability.
  3. Congestion control: The congestion control through SCTP is similar to the congestion control through TCP.
  4. Heartbeat mechanism: SCTP provides the heartbeat mechanism at the network layer.
  5. Security: Four-way handshake and cookie mechanisms effectively prevent the DoS attack.

As shown in Figure 1-164, the IP protocol is used at the network layer, SCTP the transport layer, and H.248/SIP the application layer.

Figure 1-164 Protocol architecture of H.248/SIP over STCP

Updated: 2019-02-22

Document ID: EDOC1100067358

Views: 13256

Downloads: 129

Average rating:
This Document Applies to these Products
Related Documents
Related Version
Previous Next