[OpenSIPS-Users] acc multileg accounting for standard columns and avp_db_query approach

[Bogdan-Andrei Iancu]

Hello Jayesh,

For your purpose + needs, I would rather suggest to use, instead of 
multi-leg accounting, standard accounting + missed calls accounting - so 
in ACC table you will get a single record showing calls from caller to 
GWn (successful one), while in MISSED_CALLS table you will get one 
record per failure (with the corresponding reply info). Probably you can 
use db_extra to push more than the standard info into the accounting 
records.

Regards,
Bogdan

On 11/28/2011 12:57 PM, Jayesh Nambiar wrote:
> Hi All,
> I use failure_routes to failover the calls to multiple carriers. So if 
> 1st carrier rejects the call, I route it to another carrier for the 
> call to get completed. Now, I need the accounting of first carrier 
> also in the acc table. Basically I need to know that this call was 
> rejected from the 1st carrier and got connected on the second carrier. 
> I am able to insert all the carrier related details in the acc table 
> using multi-leg info parameter. But I get stuck on the standard acc 
> columns like sip_code, sip_reason, to_tag etc.
> When the call gets connected on second carrier, the sip_code and 
> sip_reason for the first row also shows 200 OK when in reality the 
> sip_code and sip_reason for the first attempt was 503 Service 
> Unavailable. Is it possible to maintain those standard values also in 
> some variable/AVPs and insert appropriate values in appropriate rows??
>
> I also tried a different approach of not using acc module and using 
> avp_db_query for accounting on reply_routes. Basically this will 
> insert a record for every initial INVITE and all BYEs after a reply 
> for the method is received. Something like this gives me more control 
> on what is to be inserted according to my requirements:
>
> if(loose_route()) {
> if(is_method("BYE")) {
>    t_on_reply("1");
> }
>    t_relay();
> }
>
> if(is_method("INVITE")) {
> <my logic>
>     t_on_reply("1");
>     t_relay();
> }
>
> onreply_route[1] {
>    if(status =~ [2-6][0-9][0-9]) {
>        avp_db_query("insert into acc (sip_method, 
> sip_to_tag,sip_callid,sip_code,sip_reason, calling_party, 
> called_party, source_ip, dst_ip) values ('$rm', '$tt', '$ci', '$rs', 
> '$rr', '$fU', '$avp(called_party)', '$avp(source_ip)', '$avp(dst_ip)' )");
>    }
> }
> I set the appropriate AVPs like $avp(called_party), $avp(dst_ip) etc 
> after the initial INVITEs according to my requirements. These are my 
> questions:
>
> 1) First and foremost will this method insert proper INVITE and BYE 
> for accounting purpose?
> 2) How much roughly will be the penalty on efficiency as compared to 
> using the acc module?
> 3) Can AVP module take advantage of parameters like query_buffer_time 
> and query_flush_time for performance reasons?
> 4) Can I use prepared_statements while inserting using avp_db_query 
> for performance reasons?
>
> Any help and suggestions regarding the above queries are very much 
> appreciated.
> Thanks in advance.
>
> --- Jayesh
>
>
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-- 
Bogdan-Andrei Iancu
OpenSIPS Founder and Developer
OpenSIPS solutions and "know-how"

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