Subject: [Sip] How does SIP keepalive between 2 UA?

From: XuChunrong <[email-masked]>
Date: Thu, 01 Feb 2007 11:07:56 +0800

Hi..

I have a simple question..
When 2 SIP UAs have established a dialogue, and they want to exchange text  
infomations..
However this text infomation exchange may be very infrequent, how does SIP  
keepalive between the 2 UAs?
for example, 2 IM(Instance Message)
users may online but talk very infrequent,
-- 
Best Regards

Xu Chunrong
Southeast University, Nanjing

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