some question about minisip transfer function

[Mikael Magnusson]

Tony wrote:
> Hi Mikael , thanks for your reply
> about your question "What SIP UA is your Minisip connected to and which end is sending REFER?"
> 
> I describe in detial how the environment is , all my UACs are "minisip",
> UASs are "SER proxy" , network have two domains , Packet catch is "Ethereal"
> PC1 URI Bob at 192.168.1.1 , IP Address is 192.168.1.2 in one domain,
> PC2 URI Andy at 192.168.2.1 , IP Address is 192.168.2.2 in the other domain,
> 

SER is only acting as a UAS in some SIP transactions, for example
REGISTER, but not INVITE or REFER. The minisip instances are acting as
UAC or UAS.

> Bob has established unprotected session with Andy , transport mode is UDP,
> then Bob want to change session to anther device PC3 which has the same URI
> Bob at 192.168.1.1 but different IP Address is 192.168.1.3
> 
> 1. Bob Press "transfer" and enter a URI sip: Bob at 192.168.1.3 :5060 or
> Bob at 192.168.1.1 in PC1 ,
> minisip  show "Transfer requested..." , I find "REFER" doesn't send at once
> but "ACK" is sended continuously , after about 2~3 mins "REFER" be sended,
> is it normal response？
> 

Could you send a wireshark/ethereal dump of the SIP traffic to the list
or to me directly?

> 2. Bob want to change session to another device , if Andy have to know and
> press "Accept" in order to send invite to Bob in PC3？
> then Bob can press "Accept" in PC3 to establish session with Andy,
> if I want callee (Andy) to "Accept" automatically , is it workable？
> 

You'll need to modify the source.

> thanks for help
> Tony


Mikael