[Asterisk-Users] Sipura-3000 - silent dial out on FXO port

[Rich Adamson]

> I am trying to configure the FXO port on a Sipura-3000 for use with Asterisk.
> 
> When I connect to the Sipura to dial out on the PSTN line connected to
> the Sipura's FXO port, it gives me the dialtone of the PSTN line and
> then I can hear the DTMF for the number I dialled beforehand.
> 
> It does work but the customer perceives this delayed second DTMF
> feedback as "unprofessional" and the sipura as a "toy". I wonder if
> there is anything that can be done to keep the channel to the caller
> silent until after the Sipura has sent the DTMF out on the PSTN line.
> 
> Any hints appreciated.

Upgrade to their latest firmware. They changed that so its silent now.