[asterisk-ss7] charge indicator

Laura Maurizi lauramaurizi at gmail.com
Fri Jan 18 05:44:57 CST 2013

Hi Marcelo,

I agree to pay for your work and, since you have experience in SS7 I’ll
explain to you what else I need. 

I’m trying to interconnect to Telefónica de Argentina. We’ve made several
tests and they ask me to solve three things:

1.       Send charge indicator

2.       Make a call sending no caller id number

3.       When I receive a call without caller id number I should ask for it
before letting the call progress.

Could you make patches for items 2 and 3 too? 

Below I transcribe part of the mail I received from Telefonica, It’s in
Spanish but I maybe you speak Spanish too.


De: Benitez Estela Elizabeth [mailto:estela.benitez at telefonica.com] 

Enviado el: martes, 11 de diciembre de 2012 04:25 p.m.

Para: Mauricio Odo; 'Mugetti Rolando'

CC: Lewkowicz Javier Adrian; Corredoiras Nestor Osvaldo; Staffieri Gabriel

Asunto: RE: Pruebas en equipo de conmutación COOP MAR DE AJO


Buenas tardes

                        Los contacto nuevamente para detallarles los puntos
que deberían ser resueltos para permitirles la interconexión del equipo a
nuestra red. 


Operador Local:

Punto 9) Discar a un número libre de tasación. El equipo bajo prueba no
envía en ningún caso información de Tasación. El parámetro Charge indicator
contiene siempre el valor: No indication      

               Se requiere que el equipo bajo prueba envíe indicadores de


Punto 12) Llamadas sin ANI.  Cuando el equipo bajo prueba recibe un IAM sin
ANI la llamada progresa sin que se pida el parámetro faltante. Desde el
equipo evaluado no se pueden originar llamadas sin ANI. 

Se requiere que el equipo bajo prueba pueda interpretar y manejar los
mensajes INR e INF.

Con respecto al resto de los puntos contenidos en el protocolo de pruebas
algunos se completaron correctamente y otros no (en estos casos las
respuestas obtenidas no son bloqueantes para la interconexión y por ello no
se requiere que sean resueltos).




De: asterisk-ss7-bounces at lists.digium.com
[mailto:asterisk-ss7-bounces at lists.digium.com] En nombre de Marcelo Pacheco
Enviado el: Viernes, 18 de Enero de 2013 4:53
Para: asterisk-ss7 at lists.digium.com
Asunto: Re: [asterisk-ss7] charge indicator


Hi Laura,

If you expect this functionality for free, then you can delete this message.
However if you're willing to pay for it, I can create a patch that will look
for a channel variable and set the charge indicator accordingly
If the variable is absent, no special treament is made.

For instance, I set SS7_CIC, SS7_DPC on incoming calls

I'm a carrier services professional, using libss7 in production on complex
setups (one server talks to 6 separate DPCs, going through STPs in some
routes, directly in others, other remote servers go through the main server,
our libss7 switch is an STP). I have patched several potentially serious
libss7 MTP2 and ISUP bugs, but that don't hit users in normal setups, but
when they do, they will be sorry not to have those patched.
But since I don't work for a company that makes money selling asterisk
hardware, I can't give away my code.

I'm currently developing my own stand alone SS7 STP/Cluster with high end
capabilities (hundreds of point codes, dozens of signalling links, CIC based
routing - aka clustering).

I speak fluent English, but I'd rather communicate via e-mail or google talk
(I'm using MSN until I can, but I won't migrate to skype - I don't like
computer viruses on my laptops).

On 01/10/13 17:10, Laura Maurizi wrote:

Hi, how can I set charge indicator to “charge” or “no charge” is SS7.
Actually I’m sending charge indicator = 0. I’m using asterisk


Laura Maurizi 


Marcelo Pacheco
M2J Comunicações e Informática
Mobile: 55(27)2222-8118
Landline: 55(27)2233-2296
MSN: marcelo at macp.eti.br
Google Talk: marcelo at enterchip.com.br
E-mail: marcelo at m2j.com.br
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