[asterisk-ss7] Charge indicator

[Bruno Rodrigues de Mello]

Hi Gustavo,


I think one solution for this case is send and receive the audio during the 
early media (183).
Asterisk when receive a ANM from pstn side not forward the 200 Ok to SIP 
side and establish the audio during the early media (183).
Does anyone know if it is possible ?

Regards,
Bruno Rodrigues
--------------------------------------------------
From: "Gustavo Marsico" <gustavomarsico at gmail.com>
Sent: Friday, February 05, 2010 11:40 PM
To: <asterisk-ss7 at lists.digium.com>
Cc: <jvalencia at chile.com>
Subject: Re: [asterisk-ss7] Charge indicator

> Unfortunately Asterisk doesn't have any way to map the charge indicator in 
> SIP. Actually, there are a couple of drafts, but nothing serious at this 
> time.
> If the other side supports it, you can send a P- or X- header to let the 
> other side knows if the call is chargeable or not.
>
> IMHO, in SIP terms, this is one of two biggest challenges for this 
> protocol. The other is the lack of support of SUSpend RESume capabilities 
> in the local loop side.
>
> Regards,
>
> Gustavo
>
>
> On 5 Feb 2010, at 22:56, Bruno Rodrigues de Mello wrote:
>
>> Hi Jorge,
>>
>> My problem is not when I receive a call but when I send a call to telco.
>> I use my asterisk box like a gateway and receive sip calls to route this 
>> calls to PSTN.
>> In some cases the Telco send a ACM with charge indicator = 1 (no charge) 
>> and after this
>> the telco send a ANM.
>> When asterisk receive the ANM, it send a 200 Ok to SIP side and my 
>> softswitch start bill the call.
>>
>> Anyone has a idea ?
>>
>> Regards,
>> Bruno Rodrigues
>>
>>
>>
>> From: Jorge Valencia
>> Sent: Friday, February 05, 2010 6:20 PM
>> To: asterisk-ss7 at lists.digium.com
>> Subject: Re: [asterisk-ss7] Charge indicator
>>
>>
>> Hi Bruno, well last year i had the same problem, it was posted here.  My 
>> solution was modify the source, inside isup.c you need modify the code, 
>> find this function static FUNC_SEND(backward_call_ind_transmit) and add 
>> some lines. I think Matt was going to setup an option..anyway here is the 
>> code
>>
>>
>> static FUNC_SEND(backward_call_ind_transmit)
>> {
>>  unsigned char alwayscharge= 2;
>>  parm[0] = 0x40 | alwayscharge;
>>  parm[1] = 0x14;
>>  return 2;
>> }
>>
>> Regards
>>
>> Jorge Valencia G.
>> Operaciones
>> Will Telefonía SA
>> Santo Domingo 1894 - Santiago - Chile
>> +56 2 5720000
>>
>>
>>
>> --------------------------------------------------------------------------------
>>
>>
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