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. WIKIMERIONET
Merion Mertics , ,

CRM

SIP

IP

4

, IP , SIP. SIP 3 , .


1

User Agent, . , . UA (User Agent), UA (User Agent Client) - UAS (User Agent Server) - . : .

  SIP
  1. A B, INVITE , .
  2. B 100 Trying , , .
  3. B , A 180 Ringing, .
  4. B , 200 OK, .
  5. A ACK, INVITE.
  6. . RTP (Real-Time Transfer Protocol).
  7. , SIP , , - RTP.
  8. A , . A Bye, B.
  9. B 200 OK, Bye.
  10. A B .

, , . SIP , , , .


2

.

, . ,

    SIP

, , SIP SIP Proxy.


3

, , . , (redirection) , . , .

  • (Registration Server) .
  • (Allocation Server) .
  • (Redirect Server) , .

SIP Proxy, Registar. SIP Proxy , .

, SIP Proxy, , . , , A, B, .

   SIP
  1. User Agent A REGISTER , .
  2. . User Agent A , Registar 401 Unauthorized
  3. User Agent A REGISTER + login, .
  4. Registar 200 OK, . .
  5. User Agent A B INVITE.
  6. , 302 Moved Temporarily, , .
  7. User Agent A ACK, Redirect INVITE.
  8. User Agent A B, .

1.

SIP , -7.