Specification Required [6].
9.2. Registration of new information elements
The entities 'mediaTypes', 'popInformation', 'setupInformation', '
supportInformation' and 'providerInformation' define the information
elements probably included in the media, pop, setup, support and
provider elements. Inserting new values into these lists extends the
phone book by arbitrarily new information elements. Inappropriate
use of the XML content model can destroy the backward compatibility
of the DTD. Therefore the assignment of new information elements
requires the approval of a Designated Expert [6]. In addition to the
insertion of a new value into the list, the detailed definition of
the information element has to be appended to the specification part
maintained by the IANA.
10. References
[1] Bradner, S., "Key words for use in RFCs to Indicate Requirement
Levels", BCP 14, RFC2119, March 1997.
[2] Reynolds, J. and J. Postel, "ASSIGNED NUMBERS", STD 2, RFC1700,
October 1994.
[3] Barker, P. and S. Kille, "The COSINE and Internet X.500 Schema",
RFC1274, November 1991.
[4] ITU Rec. E.123, "Notation for national and international
telephone numbers", 1988.
[5] "Extensible Markup Language (XML) 1.0" W3C Recommendation 10-
February-1998 http://www.w3.org/TR/1998/REC-xml-19980210
[6] Narten, T. and H. Alvestrand, "Guidelines for Writing an IANA
Considerations Section in RFCs", BCP 26, RFC2434, October 1998.
11. Appendix: Examples
11.1. The most simple example
<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE phoneBook SYSTEM "roamPhoneBook.dtd">
<phoneBook name="minimalExample" version="1">
<pop entryVersion="1">
<address family="E164">+1 234 5678901</address>
<media><viaMODEM/></media>
</pop>
</phoneBook>
11.2. A more comprehensive example
<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE phoneBook SYSTEM "roamPhoneBook.dtd">
<phoneBook name="KNF_simple" version="1">
<pop entryVersion="1">
<address family="E164" countryCode="49">+49913130540</address>
<media>
<viaMODEM type="V90"/>
<viaMODEM type="V34B"/>
<viaISDN type="HDLC"/>
</media>
<setup>
<dnsServerAddress>192.168.147.5</dnsServerAddress>
<dnsServerAddress>193.175.24.33</dnsServerAddress>
</setup>
</pop>
<support id="KNF_main" language="EN DE">
<supportMailtoURL>mailto:support@franken.de</supportMailtoURL>
<supportTelephoneNumber>+499123968066</supportTelephoneNumber>
</support>
</phoneBook>
12. Acknowledgments
Thanks to Pat Calhoun, Bernard Aboba, Jay Farhat, Butch Anton,
Quentin Miller, and Ken Crocker for salient input and review.
13. Authors' Addresses
Questions about this memo can be directed to:
Max Riegel
Siemens AG
Hofmannstr. 51
Munich, 81359
Germany
Phone: +49 89 722 49557
EMail: maximilian.riegel@icn.siemens.de
Glen Zorn
Cisco Systems, Inc.
500 108th Avenue N.E., Suite 500
Bellevue, WA 98004
USA
Phone: +1 425 438 8218
EMail: gwz@cisco.com
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