Re: query on SUA RFC 3868 : Sequence Control

JEYASEELAN,

See the thread: SUA v16: sequence control parameter in CLDT msg
from Feb 5, 2004 on the sigtran mailing list archive.

--brian

JEYASEELAN Samuel Durairaj wrote:        (Mon, 23 Mar 2009 09:51:04)
> 
>    Sequence Control is not a valid parameter to protocol class '0' as per
>    the Q.711, section 6.2.2.2.2.
>    But RFC makes this as mandatory parameter for protocol class '0'.
>    Does anyone have a reason why this is a mandatory param in RFC?
>    Thanks & Regards
>    Samuel
>    -----Original Message-----
>    From: Brian F. G. Bidulock [[1]mailto:[email protected]]
>    Sent: Mon 3/23/2009 7:18 AM
>    To: JEYASEELAN Samuel Durairaj
>    Cc: [email protected]
>    Subject: Re: [Sigtran] query on SUA RFC 3868 : Sequence Control
>    JEYASEELAN,
>    RFC 3868 Section 3.10.22 Sequence Control:
>    3.10.22.  Sequence Control
>        0                   1                   2                   3
>        0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1
>       +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
>       |         Tag = 0x0116          |             Length = 8        |
>       +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
>       |                        Sequence  Control         |
>       +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
>       Sequence Control (6.2.2.2.2/Q.711)
>       The field is coded with the value of the sequence control parameter
>       associated with a group of messages and are chosen so as to ensure
>       proper loadsharing of message groups over SLS values while ensuring
>       that sequence control values within message groups have the
>    sequence
>       control value coded with the same value as the initial message of
>    the
>       message group.
>    So, pick a value that ensures proper loadsharing over SLS for your
>    protocol class 0 messages.
>    --brian
>    JEYASEELAN Samuel Durairaj
>    wrote:                                               (Sat, 21 Mar 2009
>    16:02:10)
>    >
>    >    Hi,
>    >    The CLDT msg mentions the parameter 'Sequence Control' as a
>    mandatory
>    >    in the rfc, but as per the Q.711, section 6.2.2.2.2 it is an
>    optional
>    >    parameter for the protocol class 0.
>    >    So the qtn is, what shall be the value to be stored in the
>    sequence
>    >    control while sending the CLDT to ASP?
>    >    Thanks & Regards
>    >    Samuel
>    > _______________________________________________
>    > Sigtran mailing list
>    > [email protected]
>    > [2]https://www.ietf.org/mailman/listinfo/sigtran
>    --
>    Brian F. G. Bidulock
>    [email protected]
>    [3]http://www.openss7.org/
> 
> References
> 
>    1. mailto:[email protected]
>    2. https://www.ietf.org/mailman/listinfo/sigtran
>    3. http://www.openss7.org/

-- 
Brian F. G. Bidulock
[email protected]
http://www.openss7.org/