[asterisk-ss7] ANM without ACM

[Gustavo Marsico]

IMHO, and in the sake of a reliable and configurable SS7 stack, I think the user should know the protocol (at least basically) to understand which is denied of allowed in the protocol. This bring to my memory the issues with NAI in PRI... the people set NAI as Unknown, because they don't even know that in several countries National or international NAI must be marked for proper routing. As SS7 is a very complex protocol that needs full attention to the particular scenarios, the operator has the responsibility for the proper use of the protocol itself, not to mention the disaster in the network that an operator can make if he mess with MTP3 messages.

Salu2

Gustavo


On 6 May 2010, at 19:30, Horacio J. Peña wrote:

> Thanks for the answer!
> 
> Should the asterisk user be aware of each protocol intricacies? Shouldn't
> it be the channel task to send the needed messages? Conversely, should
> the user be able to make asterisk to do things not allowed by the
> protocols?
> 
> Saludos!
> H
> 
> On Thu, May 06, 2010 at 11:18:56PM +0000, gustavomarsico at gmail.com wrote:
>> Is not legal to send an ANM without ACM. You can send a CON instead of ANM.
>> Try to put a Proceeding() in the dial plan.
>> 
>> 
>> Sent via BlackBerry by AT&T
>> 
>> -----Original Message-----
>> From: Horacio J. Peña <horape at compendium.com.ar>
>> Date: Thu, 6 May 2010 20:03:43 
>> To: <asterisk-ss7 at lists.digium.com>
>> Subject: [asterisk-ss7] ANM without ACM
>> 
>> Hola!
>> 
>> I'm playing with libss7 and found that if I make a dialplan like:
>> 
>> exten => 08231451010,1,Answer
>> ...
>> 
>> the result is:
>> 
>> 105  12.024960         2146 -> 639          ISUP(ITU) IAM (CIC 2)
>> 107  12.028962          639 -> 2146         ISUP(ITU) ANM (CIC 2)
>> 109  12.065962         2146 -> 639          ISUP(ITU) RSC (CIC 2)
>> 111  12.068958          639 -> 2146         ISUP(ITU) RLC (CIC 2)
>> 113  12.103963         2146 -> 639          ISUP(ITU) RSC (CIC 54)
>> 
>> It seems that the switch I'm connecting to doesn't accept ANM without a
>> previous ACM. Who is wrong? asterisk (libss7) sending ANM directly or
>> the other switch not allowing that?
>> 
>> Thanks!
>> -- 
>> Horacio J. Peña
>> horape at compendium.com.ar
>> horape at uninet.edu
>> 
>> -- 
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> 
> -- 
> Horacio J. Peña
> horape at compendium.com.ar
> horape at uninet.edu