some question about minisip transfer function

[Tony]

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,

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？

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？



thanks for help
Tony
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