Francois,

See H.225.0 Section 7.2.2.4 (Called Party Number):

Numbering plan identification (octet #3, bit 1-4) -********** Encoded following the values and rules of Table 4-9/Q.931. If set to "1001" (Private Numbering Plan) in a packet based network originated call, this indicates that (1)the E.164 address is not present in SETUP, and (2)the call will be routed via an alias address in the user-to-user information.

This says that the identification of the Private Number Plan requires the call to be routed based on an alias address in the UUI. This also means that the Private Number Plan cannot indicate that a number conforming to a private numbering plan is present in the IE.

It is possible to use the value indicating an Unknown Number Plan and place a private number in the IE. However, this is only a digit string without any defined structure.

Bob ------------------------------------------------------- Robert Callaghan Siemens Enterprise Networks Tel: +1.561.997-3756 Fax: +1.561.997-3403 Email: mailto:Robert.Callaghan@ICN.Siemens.com Robert.Callaghan@ICN.Siemens.com --------------------------------------------------------

-----Original Message----- From: Francois Audet [mailto:audet@nortelnetworks.com] Sent: Wednesday, June 20, 2001 1:40 PM To: Callaghan, Robert; 'Glenn FREUNDLICH (E-mail)' Cc: 'SG16 ITU-T (E-mail)'; 'Paul JONES (E-mail)' Subject: RE: Private telephone number in H.323v4

Hi Bob, I'm not sure I understand your point. The way I read it now: * H.323 says "Put a private number in the Q.931 IE"; and * H.225.0 says "Put a private number in the UUIE".

Which one is it? I think you are saying H.225.0 is right (I tend to agree and so does Paul). We need to make sure everybody does (Glenn in particular), and H.323 should be clarified, because I would assume most people who read it will think they are supposed to put the IE in the Q.931 information element. -----Original Message----- From: Callaghan, Robert [SMTP:Robert.Callaghan@icn.siemens.com] Sent: Wednesday, June 20, 2001 05:00 To: Audet, Francois [SC2:4K02:EXCH]; 'Glenn FREUNDLICH (E-mail)' Cc: 'SG16 ITU-T (E-mail)'; 'Paul JONES (E-mail)' Subject: RE: Private telephone number in H.323v4 Francois,

The problem is that both H.323 and H.225.0 state that in the Q.931 elements used for "telephone numbers" the code point indicating the presence of a private number is used to indicate that the address is in the UUI. It is not possible to conform to this usage and to use this value to indicate that the Q.931 element contains a private number.

Bob ------------------------------------------------------- Robert Callaghan Siemens Enterprise Networks Tel: +1.561.997-3756 Fax: +1.561.997-3403 Email: Robert.Callaghan@ICN.Siemens.com < mailto:Robert.Callaghan@ICN.Siemens.com mailto:Robert.Callaghan@ICN.Siemens.com > --------------------------------------------------------

-----Original Message----- From: Francois Audet [ mailto:audet@nortelnetworks.com mailto:audet@nortelnetworks.com ] Sent: Tuesday, June 19, 2001 7:27 PM To: Callaghan, Robert; 'Glenn FREUNDLICH (E-mail)' Cc: 'SG16 ITU-T (E-mail)'; 'Paul JONES (E-mail)' Subject: Private telephone number in H.323v4

Hi,

I just realize a contradiction in H.323v4 and H.225.0v4 concerning the encoding of "private telephone numbers" (i.e., the type we all use at work): * H.225.0v4 says that "Private telephone numbers" shall be encoded in the UUIE as private numbers, and NOT in the Q.931 information elements (Calling party IE, etc.). Let's call this the "Bob method". See Table 18/H.225.0 Note 1. * H.323v4 says that the Q.931 information element is used for "telephone numbers", and that the UUIE is used for things that are not telephone numbers. Let's call this the "Glenn method". See H.323v4/7.8.2.1 and 7.8.2.2. There is no conflict with both method for "public" telephone number, but there is a conflict for "private" telephone numbers.

Which method is right, Bob's or Glenn's?

---- François AUDET, Nortel Networks < mailto:audet@nortelnetworks.com mailto:audet@nortelnetworks.com >, tel:+1 408 495 3756