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FROM or PAID international CLI

2014-09-30 10:16:22
Hello,

I work on the international team for BT and I am trying to compose an 
internal document showing standards for international CLI delivery, 
both for C7 (TDM) and SIP, voice calls. I believe the IETF is the SIP 
equivalent of the ITU standards, so hopefully you will be able to help 
with my query.

I am trying to understand when dialling an international destination 
what is the correct CLI that should be displayed on the B end users 
handset. Is it either the P-asserted Identity (PAID) or the FROM?
Assuming both are sent, both are unrestricted, and the supplier used 
is trusted.

I have conflicted information from different suppliers, and it seems 
to differ per country. If you can provide advice on what the standard 
should be that would be really useful.

Thanks,

Matt


Matthew Pearson
International Traffic Management
Service Assurance

Group: 00800 8261 4354, opt 1, opt 1
Email: Matthew(_dot_)Pearson(_at_)bt(_dot_)com
Web: www.bt.com

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