Calling Party Number

Klaghofer Karl ICN EN HC SE 81 Karl.Klaghofer at ICN.SIEMENS.DE
Thu Jul 6 15:37:16 EDT 2000

Some further thoughts on this issue,

A calling party may provide both E.164 number and PNP number within H.323
(applies also in case of calling party being in SCN (e.g. PBX).
I agree, the E.164 address should be in H.225.0 Calling Party Number IE; the
PNP address should be within the
Setup-UUIE.sourceAddress.partyNumber.privateNumber field.

A second E.164 number - if received from the SCN  - may be sent further by
an ingress GWY within a second H.225.0 Calling Party Number IE if the two
calling party number option is supported.
The alternative to map this second E.164 number received into
Setup-UUIE.sourceAddress.partyNumber.publicNumber field is not recommended,
since we currently in H.225.0 have the problem that the
SetupUUIE.presentatioIndicator and SetupUUIE.screeningIndicatir always apply
to all alias addresses in Setup-UUIE (PNP, E.164, etc) which might be a

Furthermore, you may want to provide any kind of modified/prefixed calling
party number (e.g. by GWY or GK). This should then be placed within
Setup-UUIE.sourceAddress.dialledDigits field.


-----Ursprüngliche Nachricht-----
Von: Francois Audet [mailto:audet at NORTELNETWORKS.COM]
Gesendet am: Donnerstag, 6. Juli 2000 19:38
An: ITU-SG16 at
Betreff: Re: Reference which version of Q.931, etc.?


I do not know of any impact directly.  However, it will be necessary to
verify what the impact might be, if any.

As an additional though, Q.931 supports two Calling Party IEs.  Do we need
two calling party structures in ASN.1 for equivalent support?

I am not sure.

I tought the 2 Calling Party IEs are only use when one is
public-network-provided (i.e., verified by Ma Bell) and the other is "user"
or "private-network" provided. In that case, it might be sufficient to only
use the information element (the 2 of them) since it will always be E.164
numbers (at least for the E.164 number). I could see 2 IEs (one with the
verified E.164 number, the other with the un-verified user-provided number),
or 1 IE (with the verified number) and 1 ASN.1 with the private number.

What do you think?

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