[SIPForum-discussion] Supplementary Services fo SIP

[alexzhang at gdnt.com.cn]

Hi All,
 
Which RFC is describing the Supplementary Services call flow, such as
Call Forwarding, Call Transfering, etc, for SIP?
 
Best Regards,
Alex Zhang
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G/U Voice Core
GDNT R&D Center
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alexzhang at gdnt.com.cn <mailto:alexzhang at gdnt.com.cn> 
 
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