Hi,

I just start to dig into SIP-T development which could have
the interworking with ISUP/BICC.

After I read internet draft: draft-chang-sipping-bicc-network-00.txt , I
have couple of confusions mainly referring to page 7 Table 1. BICC 
messages mapped into SIP:

1) Why CGB, CFN, GRS, RES, RSC and UCIC map to NOTIFY 
instead of BYE (like ISUP to SIP mapping, refer to draft-ietf-sipping-
isup-00.txt, section 10.1 and section 10.2)?

2) What's the purpose to encapsulate CQM and CGU and pass through
SIP network? 

Thanks for your time,


Best Regards,

Helen Luo

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