The following errata report has been submitted for RFC3261,
"SIP: Session Initiation Protocol".

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You may review the report below and at:
http://www.rfc-editor.org/errata_search.php?rfc=3261&eid=2769

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Type: Technical
Reported by: Iñaki Baz Castillo <[email protected]>

Section: 17.1.2.2

Original Text
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   MUST be passed to the transport layer for transmission.  If an
   unreliable transport is in use, the client transaction MUST set timer
   E to fire in T1 seconds.  If timer E fires while still in this state,
   the timer is reset, but this time with a value of MIN(2*T1, T2).
   When the timer fires again, it is reset to a MIN(4*T1, T2).  This
   process continues so that retransmissions occur with an exponentially
   increasing interval that caps at T2.

Corrected Text
--------------
   MUST be passed to the transport layer for transmission.  If an
   unreliable transport is in use, the client transaction MUST set timer
   E to fire in T1 seconds.  If timer E fires while still in this state,
   the timer is reset, but this time with a value of MIN(2*T1, T2).
   When the timer fires again, it is reset to a MIN(4*T1, T2). Multiplier
   on T1 doubles with each reset so that retransmissions occur with an
   exponentially increasing interval that caps at T2.

Notes
-----
The original text doesn't clarify that the multiplier of T1 is doubled with 
each timer reset, so it could be understood that the maximum value the timer 
takes is MIN(4*T1, T2) which is 2s (so the timer would never reach 4s and the 
resulting intervals would be 500ms, 1s, 2s, 2s, 2s, 2s, etc).

Instructions:
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RFC3261 (draft-ietf-sip-rfc2543bis-09)
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Title               : SIP: Session Initiation Protocol
Publication Date    : June 2002
Author(s)           : J. Rosenberg, H. Schulzrinne, G. Camarillo, A. Johnston, 
J. Peterson, R. Sparks, M. Handley, E. Schooler
Category            : PROPOSED STANDARD
Source              : Session Initiation Protocol
Area                : Real-time Applications and Infrastructure
Stream              : IETF
Verifying Party     : IESG
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