H3C Technologies H3C MSR 5600 - Manual (Page 91)

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Tasks at a glance
(Optional.) Configuring extended SIP functions
• Configuring out-of-band DTMF
• Configuring periodic refresh of SIP sessions
• Configuring PSTN cause-to-SIP status mappings
• Configuring caller privacy
• Setting the P-Asserted-Identity or P-Preferred-Identity header field
Configuring SIP UA registration
A SIP UA registers with a SIP registrar as shown in Figure 32 :
1. The SIP UA sends a REGISTER request to the registrar.
2. The registrar returns a 200 OK response to the UA if the registration is accepted.
Figure 32 Registration process
If the registrar needs to authenticate the UA, the UA registers with the registrar as shown in Figure 33 :
3. The UA sends a REGISTER request to the registrar.
4. The registrar returns a 401/407 response, challenging the originator to provide credentials.
5. The UA sends a REGISTER request that includes credentials to the registrar.
6. The registrar returns a 200 OK response to the UA if the authentication succeeds.
Figure 33 Registration process with authentication
Configuration prerequisites
Complete the following tasks before you configure SIP credentials information:
IP network
UA
Registrar
200 OK
REGISTER