[SIPForum-discussion] Query on re-invite port

[anusha deepti]

Hi folks,
      Can you please tell me which product is at fault here??

Product A                                              Product B

Product A(port 5060)  <--- INVITE ----        Product B(Port 47086)



Product A(port 5060)  --- 100 trying ---->  Product B(Port 47086)



Product A(port 5060)  --- 180 ringing ----> Product B(Port 47086)



Product A(port 5060)  --- 180 ringing ----> Product B(Port 47086)



Product A(port 5060)  --- 200 OK ---->        Product B(Port 47086)



Product A(port 5060)  <--- ACK ----              Product B(Port 47086)



Product A(port 5060)  <--- OPTIONS ----    Product B(Port 47086)



Product A(port 5060)  --- 200 (OPT) ---->   Product B(Port 47086)







Till here everything is fine







When HOLD is initiated from Product A







Product A(port 5060)  --- INVITE ---->        Product B(Port
47086)


Here Product B expects re-invite on 5060, But it is responding with 100
trying and 200 OK



Product A(port 5060)  <--- 100 trying ----  Product B(Port 5060)



Product A(port 5060)  <--- 200 OK ----        Product B(Port 5060)



Is Product B correct in responding from 5060 here instead of 48086?



Product A(port 5060)  --- ACK ---- >          Product B(Port 47086)



   Here Product A sends ACK to Product B ephemeral port 47086, Then  Product
B is not forwarding ACK to Product C



                Then Product C is re-transmitting the 200 OK







Product A(port 5060)  <--- 200 OK ----        Product B(Port 47086)



Product A(port 5060)  <--- 200 OK ----        Product B(Port 47086)



Here again Product A receiving 200 OK from Product B from 47086



                And Product A is not sending ACK for these 200 OKs


Thank you
Anusha
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