On Wed, Oct 28, 2009 at 6:37 AM, Alex To <tonhudung@gmail.com> wrote:
The problem is I could simply get everything working by buying a zaptel compatible card or a VoIP Gateway. However I would like to use the modem that I am developing since it does provides some additional features.
It depends on how your modem behave... Eg: in the past I developed a channel driver that was using voicemodems and ALSA to interface with PSTN: AT command for call control and ALSA for audio I/O. If you are in this situation (your modem accept AT commands, and has a way to do audio I/O through ALSA or some other interface), then maybe you would like to wait a little bit until I release a new endpoint for FreeSWITCH that do this for GSM, and just use that endpoint with little or no customization. -giovanni
Does that mean I could start my way reading about Zaptel and develop a modified version of Zaptel to control my modem ?
Thanks for pointing me the way.
Regards
Alex To
From: freeswitch-dev-bounces@lists.freeswitch.org [mailto:freeswitch-dev-bounces@lists.freeswitch.org] On Behalf Of Michael Jerris Sent: Wednesday, October 28, 2009 1:23 PM To: freeswitch-dev@lists.freeswitch.org Subject: Re: [Freeswitch-dev] Using a modem to connect ordinary phones
You are better off creating a zaptel driver than re-creating all that work that has already been done.
Mike
On Oct 28, 2009, at 1:05 AM, Alex To wrote:
Hi,
I found the same topic created 2 years back in Oct 2007 but it doesn’t seem to have the answer yet.
I am quite new to FS and having a hard time reading the documentation. Someone could tell me: how would I use a modem and develop an Endpoint in FS that I could bridge the call from VoIP to PSTN. I am a hardware engineer, I am developing this modem and would want to use it with FS. I know that I could simply buy a VoIP Gateway or a zaptel compatible card and use OpenZap.
Could someone point me out the direction for the following matters:
1. I feel that I need to develop an Endpoint module, like mod_sofia, mod_iax... that controls my modem so I could bridge the call from VoIP to PSTN ? If that is correct, could someone point me the documentation to start reading about Endpoint interface …?
2. Is there any similar module developed before about controlling a modem using AT Command
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-- Sincerely, Giovanni Maruzzelli Cell : +39-347-2665618