Here are a few problems I've found in H.225 Annex G. They are problems of an "editorial" nature, but should probably be fixed in the near term (Geneva?).
(1) Section 1.7.1 - The end of the first paragraph states the following:
" (Note that since " * " is a meaningful character, the template actually includes a Boolean flag to indicate whether the address is specific or not. These examples use " * " to indicate a wild card, but the actual representation in the template is through the Boolean flag.) "
In the latest version of the Annex, there is no longer a boolean flag in the template. Each pattern in a template explicitly indicates whether it is a specific or wildcard pattern. I suggest to change the wording to:
" (Note that templates do not use the " * " character to indicate whether an address is specific or not because the " * " character can have other meanings - e.g., within an AliasAddress. Instead, the template explicitly specifies whether an address is a specific or a wildcard address. For illustrative purposes, the examples that follow use " * " to indicate a wildcard address.) "
(2) Section 1.7.1.2 - The first paragraph states:
"A border element may request the statically configured templates from another border element."
I think there is no reason to differentiate between templates that were configured statically and those received dynamically. I suggest the wording:
"A border element may request templates from another border element."
(3) Section 1.8.2.1
The third field, gatekeeperID, should be called elementIdentifier, for the following reasons: - a gatekeeper does not own a descriptor - a border element does - to be consistent with other messages (which use the elementIdentifier to represent the id of the relevant border element)
The Field and Description for this field should be changed to:
Field Description ================================= elementIdentifier This is a text identifier that indicates the owner of the descriptor (i.e., the border element that created this message
The ASN.1 for Descriptor should also be changed from:
Descriptor ::= SEQUENCE { descriptorInfo DescriptorInfo, templates SEQUENCE OF AddressTemplate, gatekeeperID GatekeeperIdentifier OPTIONAL, ... }
to:
Descriptor ::= SEQUENCE { descriptorInfo DescriptorInfo, templates SEQUENCE OF AddressTemplate, elementIdentifier ElementIdentifier OPTIONAL, ... }
(4) Section 1.8.2.3.3 - There is a typo in the Description of the transportQoS field. It currently states:
transportQoS Indicates where the responsibility lies for resource reservation for the all made through this contact.
I suggest:
transportQoS Indicates where the responsibility lies for resource reservation for a call made through this contact.
(5) Section 1.8.2.5 - There is a typo - the term SecurityCapability is misspelled.
(6) Section 2 (ASN.1 definitions) - the specification of serviceID is not correct. It reads:
serviceID ::= GloballyUniqueID
The "s" in serviceID should be capitalized. The correct line is:
ServiceID ::= GloballyUniqueID
This is actually a more serious problem, because it will cause ASN.1 compilation problems.
Michael Fortinsky ----------------------------------------------------------------- Program Manager, Servers Group R&D, VocalTec Communications Ltd. Email: mike@vocaltec.com Tel: 972 9 9707768 Fax: 972 9 9561867