Subject: [Simple] Reason-Phrase of 423 error

From: Akinori Iwakawa <[email-masked]>
Date: Wed, 02 Jul 2003 14:39:37 +0900

Hello Folks,

     Response status code 423 has three different suggested Reason Phrase as summarized below. 
Does SIP standard specification suggest different Reason Phrase for SUBSCRIBE request?

 Reason-Phrase          Method       RFC     Section    comments
 ----------------------------------------------------------------------
 Interval Too Brief     REGISTER     3261    10.3       Registration expiration
 Interval too small     SUBSCRIBE    3265    3.1.6.1    Initial subscription expiration
 Subscription Too Brief SUBSCRIBE    3265    3.1.6.4    Refreshing subscription expiration

     It seems "Interval Too Brief" is suggested even for specifying too brief subscription 
expiration. Is that correct?

 Regards

Akinori Iwakawa  
Web&IP Service Architecture Labs.
FUJITSU LABORATORIES LTD.
[email-masked]

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