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SIP Service Examples:
11. Three-Way Conference (Third Party Joins)

Top Prev Next Start   Reader's guide
01. Call Hold
02. Consultation Hold
03. Music On Hold
04. Transfer: Unattended
05. Transfer: Attended
06. Transfer: Instant Messaging
07. Call Forwarding Unconditional
08. Call Forwarding Busy
09. Call Forwarding No Answer
10. 3-Way Conference: 3rd Party is Added
11. 3-Way Conference: 3rd Party Joins
12. Single Line Extension
13. Find-Me
14. Call Management (Incoming Call Screening)
15. Call Management (Outgoing Call Screening)
16. Call Park
17. Call Pickup
18. Automatic Redial
19. Click to Dial
 

Three-Way Conference (Third Party Joins)
Top 1) INVITE (A2B) 2) 180 Ringing 3) 200 OK 4) ACK (A2B) 5) INVITE (C2B Join:A-B) 6) 180 Ringing
Prev Next 7) INVITE (B2A) 8) 200 OK 9) ACK (B2A) 10) 200 OK (B2C) 11) ACK (C2B)

Three-Way Conference (Third Party Joins)
Top 1) INVITE (A2B) 2) 180 Ringing 3) 200 OK 4) ACK (A2B) 5) INVITE (C2B Join:A-B) 6) 180 Ringing
Prev Next 7) INVITE (B2A) 8) 200 OK 9) ACK (B2A) 10) 200 OK (B2C) 11) ACK (C2B)

Three-Way Conference (Third Party Joins)
Top 1) INVITE (A2B) 2) 180 Ringing 3) 200 OK 4) ACK (A2B) 5) INVITE (C2B Join:A-B) 6) 180 Ringing
Prev Next 7) INVITE (B2A) 8) 200 OK 9) ACK (B2A) 10) 200 OK (B2C) 11) ACK (C2B)

Three-Way Conference (Third Party Joins)
Top 1) INVITE (A2B) 2) 180 Ringing 3) 200 OK 4) ACK (A2B) 5) INVITE (C2B Join:A-B) 6) 180 Ringing
Prev Next 7) INVITE (B2A) 8) 200 OK 9) ACK (B2A) 10) 200 OK (B2C) 11) ACK (C2B)

Three-Way Conference (Third Party Joins)
Top 1) INVITE (A2B) 2) 180 Ringing 3) 200 OK 4) ACK (A2B) 5) INVITE (C2B Join:A-B) 6) 180 Ringing
Prev Next 7) INVITE (B2A) 8) 200 OK 9) ACK (B2A) 10) 200 OK (B2C) 11) ACK (C2B)

Three-Way Conference (Third Party Joins)
Top 1) INVITE (A2B) 2) 180 Ringing 3) 200 OK 4) ACK (A2B) 5) INVITE (C2B Join:A-B) 6) 180 Ringing
Prev Next 7) INVITE (B2A) 8) 200 OK 9) ACK (B2A) 10) 200 OK (B2C) 11) ACK (C2B)

Three-Way Conference (Third Party Joins)
Top 1) INVITE (A2B) 2) 180 Ringing 3) 200 OK 4) ACK (A2B) 5) INVITE (C2B Join:A-B) 6) 180 Ringing
Prev Next 7) INVITE (B2A) 8) 200 OK 9) ACK (B2A) 10) 200 OK (B2C) 11) ACK (C2B)

Three-Way Conference (Third Party Joins)
Top 1) INVITE (A2B) 2) 180 Ringing 3) 200 OK 4) ACK (A2B) 5) INVITE (C2B Join:A-B) 6) 180 Ringing
Prev Next 7) INVITE (B2A) 8) 200 OK 9) ACK (B2A) 10) 200 OK (B2C) 11) ACK (C2B)

Three-Way Conference (Third Party Joins)
Top 1) INVITE (A2B) 2) 180 Ringing 3) 200 OK 4) ACK (A2B) 5) INVITE (C2B Join:A-B) 6) 180 Ringing
Prev Next 7) INVITE (B2A) 8) 200 OK 9) ACK (B2A) 10) 200 OK (B2C) 11) ACK (C2B)

Three-Way Conference (Third Party Joins)
Top 1) INVITE (A2B) 2) 180 Ringing 3) 200 OK 4) ACK (A2B) 5) INVITE (C2B Join:A-B) 6) 180 Ringing
Prev Next 7) INVITE (B2A) 8) 200 OK 9) ACK (B2A) 10) 200 OK (B2C) 11) ACK (C2B)

Three-Way Conference (Third Party Joins)
Top 1) INVITE (A2B) 2) 180 Ringing 3) 200 OK 4) ACK (A2B) 5) INVITE (C2B Join:A-B) 6) 180 Ringing
Prev Next 7) INVITE (B2A) 8) 200 OK 9) ACK (B2A) 10) 200 OK (B2C) 11) ACK (C2B)

Last update: November 19, 2009 
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