Subject: RE: [rohc] crc check

From: "Surtees, Abigail" <[email-masked]>
Date: Mon, 18 Nov 2002 13:31:57 -0000

Hi Kwang Mien,
 
There were several emails on the list at the end of July this year in which several people agreed that the crc value is 0x62cb.  There is also a perl script version of the RFC 1662 crc code on the additional rohc website http://www.dmn.tzi.org/ietf/rohc/rohc-crc.pl <http://www.dmn.tzi.org/ietf/rohc/rohc-crc.pl>  and this also produces 0x62cb.
 
Best regards,
 
Abbie
Abbie Surtees 
Engineer 
Internet Applications and Mobility 
Roke Manor Research Ltd 
Tel:   +44 (0) 1794 833131 

-----Original Message-----
From: Chan Kwang Mien [mailto:[email-masked]]
Sent: 17 November 2002 06:26
To: Rohc (E-mail)
Subject: [rohc] crc check

hi,

i would like to refer to the CRC test in the 
http://www.ietf.org/internet-drafts/draft-price-rohc-sigcomp-torture-tests-00.txt <http://www.ietf.org/internet-drafts/draft-price-rohc-sigcomp-torture-tests-00.txt> 

the expected CRC value is given as 0x62cb. using the algorithm 
in RFC 1662, this value is the value before taking the complement of the actual 
CRC value. after taking the complement, the CRC value should be 0x9d34.

can someone confirm this ? thanks !!

regards,
Kwang Mien