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I-D ACTION:draft-roy-sip-h323-interworking-3pcc-00.txt



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	Title		: Transparent Third Party Call Control Model for 
                          SIP-H.323 Interworking
	Author(s)	: R. Roy
	Filename	: draft-roy-sip-h323-interworking-3pcc-00.txt
	Pages		: 29
	Date		: 26-Feb-02
	
This contribution describes a generalized interworking mechanism
between SIP and H.323 for third party call control where the
controller function can reside anywhere within the IP Telephony
network. The proposed generalized interworking mechanism offers
transparent IP Telephony services between the SIP and H.323
endpoints considering the third party call control function resides
in a separate application server. The implementation of the third
party call control function on a SIP proxy, SIP endpoint, H.323 GK,
H.323 endpoint, MCU, or IWF is a special case of the generalized
mechanism proposed in this document

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