Speaking of Standards

Today I submitted version 10 of the P-Charge-Info Internet Draft. You can find it at:

http://tools.ietf.org/html/draft-york-sipping-p-charge-info

For those not familiar with P-Charge-Info, it is a custom SIP header used for passing the address of the party to be charged from one SIP system to another. I wrote about why I originally wrote the draft back in 2008 and then posted an update on the changed IETF process in 2009. As I was getting ready to request expert review of the document earlier this year, some questions were raised about the formal definition and how that lined up with how it was actually being deployed. It took a bit of time and involved discussions with a number of folks but I believe those questions have now been resolved and we should be able to proceed with getting expert review.

Beyond the formal definition, the other change was updating the draft to reflect that RFC 5727 has now rendered RFCs 3427 and 3968 obsolete. Wording in the draft needed to reflect that fact.

The change log for the draft is:

• Formal ABNF definition updated.
• In formal syntax, semicolons added to npi-param and noa-param definitions.
• npi-param changed to a ‘gen-value’ to use digits vs text. Values npi-param are shown in Appendix A.
• Corrected example to show proper use of parameters.
• Updated references to RFC 3427 and RFC 3968 to reference RFC 5727.

If you have questions or comments about the draft, I do, as always, welcome such feedback.

Related posts:

1. New version of P-Charge-Info (08) Internet Draft available
2. New version of P-Charge-Info (07) Internet-Draft now available – and an update on the draft status
3. P-Charge-Info and incredible disconnect between PSTN billing and the new world of SIP
4. Final (Maybe?) Internet-Draft of MRCP Version 2 Now Available
5. Updated P2PSIP Security Overview Internet-Draft posted

Tags: IETF, P-Charge-Info, SIP

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