[asterisk-r2] r2 cantv

Moises Silva moises.silva at gmail.com
Fri Dec 9 15:48:08 CST 2011


2011/12/9 Daniel Ferrer <daniel at teledata.com.uy>

> esa central para realizar llamadas. El proveedor de la NEC dice que hay
> que cambiar la señalización a DTMF, y no se si se refiere a DTMF-R2, pero
> no tengo claro cual es la diferencia contra el MFC/R2. Los tonos no son
> Multi-Frequency (son Dual-Tone) y no es Compelled ?
>

En MFC-R2 la sequencia de tonos se transmite usando un cierto set de
frequencias (pares de frequencias) conocido como MF (que no es lo mismo,
que otro set de pares de frequencias conocido como Bell MF). Usando este
set de frequencias se transmite DNIS, ANI y Categoria de abonado.

En DTMF-R2 los tonos son tambien pares de frequencias, pero frequencias
distintas (y son iguales a las de cualquier telefono analogo que transmite
digitos DTMF). La informacion transmitida se reduce a el DNIS unicamente y
es sequencial uno digito tras otro sin esperar ningun tipo de tono de
confirmacion.


*Moises Silva
**Software Engineer, Development Manager***

msilva at sangoma.com

Sangoma Technologies

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