Subject: [Sigtran] Re: Doubt of M3UA SCON message

From: "Brian F. G. Bidulock" <[email-masked]>
Date: Wed, 5 Jun 2002 22:59:59 -0500

fangjishang,

On Thu, 06 Jun 2002, fangjishang wrote:

> 
>    Dear Brian,
>    
>      I have a doubt in implementing the SCON message at ASP side.
>    
>      According to description in draft12, we have to fill Concerned DPC
>    field and Affected DPCs when we send SCON from ASP to SGP.
>    
>    Pls refer the case as shown in the diagram below,
>    
>                                                    AS1 : Signalling PC =
>    1
>                                                  _______
>                                  |--------------|       |
>        |-----|                   |              | ASP1  |
>        | SGP |-------------------|              |_______|
>        |-----|                   |              ________
>                                  |             |        |
>                                  |_____________|   ASP1 |
>                                                |________|
>                                                    AS2 : Signalling PC =
>    2
>    
>    When the ASP1 is congested, we should send SCON from ASP1 to SGP. My
>    doubt is:
>    <1>If ASP1 is operating in 2 diff AS (say AS1 and AS2), what should we
>    fill in "affected DPC list" and "Concerned DPC" parameter ? As per my
>    understanding, Affected DPC is 1 and 2(OPCs of AS1 & AS2). Concerned
>    DPC is either 1 or 2. Is it correct ? If this is so, what is the need
>    of "Concerned DPC" in SCON message ?

No, Concerned PC is the distant PC in the SS7 network which sent a
message that caused the congestion.

>    
>    <2> If SGP receives the SCON from ASP, what is the action to be taken
>    related to Concerned DPC ? what is the significance of "Concerned DPC"
>    in SCON sent from ASP to SGP ?

The SG might want to send TFC to the Concerned PC (DPC) with the
Affected PC as the OPC.  But that is implementation dependent.

--brian

>    Thanks and regards.
>    -Jesy

-- 
Brian F. G. Bidulock    ¦ The reasonable man adapts himself to the ¦
[email-masked]    ¦ world; the unreasonable one persists in  ¦
http://www.openss7.org/ ¦ trying  to adapt the  world  to himself. ¦
                        ¦ Therefore  all  progress  depends on the ¦
                        ¦ unreasonable man. -- George Bernard Shaw ¦

_______________________________________________
Sigtran mailing list
[email-masked]
https://www1.ietf.org/mailman/listinfo/sigtran