Re: DPC + OPC Routing

Cathy,

Well, if you follow ETSI TS 102 142-V1.1.1 (2003-05) then you will not
assign an RK more granular than a point code and there is no issue.

It does mean, however, that if you have 50 M3UA blades, each serving a
different AS, you will need 50 point codes for the rack.

In the case of SCCP, it is better to use SUA (RFC 3868).  It requires only
a single point code for a rack of blades, and it can route down to an
individual subsystem or global title range (AMF).

--brian

Newman, Catherine J wrote:                      (Fri, 13 Apr 2007 13:41:35)
> Ansi T1.112.4-1996 doesn't have the SCCP Flow Control procedures.
> Ansi T1.112.4-2001 and T1.112.4-2005PPP have these procedures as
> optional:
> "5.5	SCCP Flow Control (Optional)"
> 
> And Section 5.3.6.7 & 8 and other related requirements have footnote 20:
> 20.  Flow Control procedures in clause 5.5 are optional.
> 
> Telcordia GR-246, T1.112.4-2005 (the latest version) states these
> procedures aren't used:
> "5.5 SCCP Flow Control
> 
> NOTE: SCCP Flow Control procedures are not specified for use in Client
> Company networks."
> 
> I'm pointing this out since I think there is likely to be
> interoperability issues if UPU (re: SCCP) is sent in ANSI networks -
> processing a received UPU (re:SCCP) is optional.  ANSI T1.112.4 Section
> 5.5 should be made mandatory if this solution is agreed upon, but then
> there will be backward compatibility issues.   
> 
> Alternately, limitations could be put on RK use (e.g., force user to
> provision a separate SSN for each of the AS1 and AS2 in the original
> example) to avoid such circumstances so no changes to standard SS7
> procedures are needed.
> 
> Cathy 
>  

-- 
Brian F. G. Bidulock
[email protected]
http://www.openss7.org/