Subject: Re: [SUA issues 3,6,7] text

From: "Brian F. G. Bidulock" <[email-masked]>
Date: Thu, 30 Aug 2001 23:51:51 -0500

John,

Here your original proposal...

--brian

John Loughney wrote:                                  (Wed, 22 Aug 2001 14:04:19)
> Hi all,
> 
> There was a suggestion to split up the flags parameter into components.
> 
> Please see if these parameters are sufficient.
> 
> John
> 
> 3.10.x Hop counter 
> 
>    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 = 0x010x          |             Length = 8        |
>   +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
>   |                unused                         |  Hop Counter  |  
>   +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
> 
> Hop Counter (3.18/Q.713)
> 
> The value of the hop counter is decremented with each global title
> translation, and should be in the range 15 to 1.
> 
> mandatory in CLDT, CLDR, CORE.
> 
> 3.10.y Importance & Message Priority(or Priority) 
> 
>    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 = 0x010y          |             Length = 8        |
>   +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
>   |          Importance           |        Message Priority       |
>   +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
> 
> Importance (3.19/Q.713)
> 
> Bits 1-3 are coded to indicate the importance of the messages. The values
> are between 0 and 7, where the value of 0 indicates the least important and
> 7 indicates the most important.
> 
> Bits 4-8 are spare bits and should be coded zero.
> 
> mandatory in CLDT, CLDR, CORE, COAK, COREF, RELRE.
> 
> 3.10.z Protocol Class
> 
>    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 = 0x010z          |             Length = 8        |
>   +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
>   |                  unused                       |  Protocol Cl. |
>   +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
> 
> Protocol class (3.6/Q.713)
> 
> Bits 1-2 indicate the protocol class.
> 
> 		Value	Description 
>       	  0       Class 0 (connectionless service) 
>       	  1       Class 1 (connectionless service) 
>       	  2       Class 2 (connection-oriented service) 
>       	  3       Class 3 (connection-oriented service)
> 
> Bit 8 indicates the use of the return on error procedure.
> 
> 		Value	Description 
>       	 0x0		No special options
>       	 0x1		Return message on error
> 
> 		Bits 3-7 are spare and should be coded zero.
> 
> 3.10.zz 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 = 0x010zz         |             Length = 8        |
>   +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
>   |                        Sequence  Control  				|
>   +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
> 
> Mandatory in CLDT, CORE, COAK, COIT.
> 
> Sequence Control (1.1.2/Q.714)
> 
> 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.
> 
> 
> 
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-- 
Brian F. G. Bidulock
[email-masked]
http://www.openss7.org/

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