[Speermint] SPEERMINT Peering Architecture - LF - OF - SF

["Stastny Richard" <[e-mail]>]

Folks,
 
One general statement in advance:
Coming from the VON Europe last week with discussions
about walled garden and IMS,
my overall expression is that this draft in IMS in text-mode.
 
I have another question for clarification to this draft,
because I am confused:
 
I do not understand that the LF is discovering the OF

   o  Location Function (LF):  Purpose is to enable discovery of the OF 
      peering point. 

   o  Operation Function (OF):  Purpose is to enable discovery and 
      exchange of policy and parameters to be used in with the SF 
      peering point. 

   o  Signaling Function (SF):  Purpose is to enable the discovery of 
      endpoints and assist in discovery and exchange of parameters to be 
      used with the MF peering point. 

I always had the naive idea (also triggered by the SPEERMINT chartert 
that e.g. ENUM is a LF and discovering the SIP URIs uses in the SF

How is now OF coming in between thsi, especially what is listed
in the draft, especially CALEA, Accounting and Applications?

"Operational data mediation:  TBD 

   o  CALEA implementation:  TBD 

   o  Accounting:  Call Detail Record's (CDR's) MAY be collected to be 
      utilized by the peering operators.  Based on the application, the 
      format should be an open standard for common consumption of 
      billing systems.  Operators may use this data for a number of 
      reasons, including billing in the event the peering relationship 
      becomes asymmetric (unbalanced traffic flow) or there is a Tier 1 
      to Tier 2 relationship.  In order to limit the potential for 
      billing systems to impact the OF, a separate server should be 
      created to maintain all records collected from a single 
      interconnection to any number of OF's. 
    An OF can also be a special function that contains bi-laterally 
   disclosed information about the application servers and databases of 
   each IP service provider. An example of this function is to allow a 
   session to select a better suited application server from a set of 
   application servers located inside both service providers' network.  "
 
Richard

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