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Re: [Dime] RFC 4006 bis - IMEI

Dave Dolson <ddolson@sandvine.com> Thu, 30 June 2016 17:38 UTC

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From: Dave Dolson <ddolson@sandvine.com>
To: "Gardella, Maryse (Nokia - FR)" <maryse.gardella@nokia.com>, "dime@ietf.org" <dime@ietf.org>
Thread-Topic: [Dime] RFC 4006 bis - IMEI
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Date: Thu, 30 Jun 2016 17:38:52 +0000
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Subject: Re: [Dime] RFC 4006 bis - IMEI
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Maryse,

If I understand correctly, you are proposing overloading a type, distinguishing the types only by length.

Is there precedent for the overloading you propose, such as a 3GPP standard or de facto standard usage that you can cite?

Otherwise, IANA may assign new values for new types, and we aren't short on space:
http://www.iana.org/assignments/aaa-parameters/aaa-parameters.xhtml#aaa-parameters-41


-Dave



-----Original Message-----
From: DiME [mailto:dime-bounces@ietf.org] On Behalf Of Gardella, Maryse (Nokia - FR)
Sent: Thursday, June 30, 2016 12:59 PM
To: dime@ietf.org
Subject: [Dime] RFC 4006 bis - IMEI

All,

As part of the updates to RFC 4006 I propose to consider the IMEI also when refering to IMEISV, otherwise it is not clear if User-Equipment-Info-Type value O can be used for IMEI. 


In section 8.50. User-Equipment-Info-Type AVP in RFC4006,the following is specified: 
  
 IMEISV                          0
      The identifier contains the International Mobile Equipment
      Identifier and Software Version in the international IMEISV format
      according to 3GPP TS 23.003 [3GPPIMEI].

Which I propose to be updated as follows:  

IMEI(SV)                          0
      The identifier contains the International Mobile Equipment
      Identifier and Software Version in the international IMEISV format, 
	or the International Mobile Equipment Identifier in the international IMEI format 
      according to 3GPP TS 23.003 [3GPPIMEI]. 


Differentiation between IMEI (15 digits) and IMEISV (16 digits) is based on AVP length, would this work?

BR
Maryse

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