[asterisk-users] Developing VoIP with Asterisk (hardphones & softphones)

[Carlos Alberto Bernat Orozco]

Hi Group!


Thanks Joshua Colp for your answer!!. I thinking (aprox. ) 50 simultaneous
users up at the beginning.

Some of our users, most, have private adresses, automatically assigned by
dhcp. Some other, very few, has the public ones.

I was thinking on hardphones because the idea for the user to pick up a real
phone and make the call but our investment it's too short and I tried the
SJphone for first time because only have to download. (is there a better?).

But what you tell me it's right. I'll try to use hardphones to make some
tests and I will give the results on this list if there is someone with
similar troubles. I'm thinking to use some ATA's like cisco for testing.

Any idea is wellcome!

Carlos Bernat


> Hi Group!

Greetings and salutations.

> Still I'm concern about my problem with echo on the voice and I want to
ask
> some advice to developing VoIP. Maybe I'm very ambiciuos or maybe not
> because I want to give VoIP to near 500 users.

The thing that you should be thinking about is how many simultaneous calls
you want up. It's easy to have 500 accounts on a box.

> We got an small ISP and we have the project to give telephony (for now) to
> our users between them. Our resources are limited and I have installed *
as
> a hope to give this service to our users. We have a good network (with
small
> problems) but I believed that is possible to give this service. Our HFC
> network is very well calibrated and works fine. The users have cable
modems
> to connect to the internet and we give private adresses to some users.

This shouldn't be too bad. Do some users have public and some private? You
may be able to get away with reinviting internally. This way Asterisk would
not handle the audio.

> I'm searching for someone who has the same problem in the past with
similar
> things, to know how solve it and if is possible to give  VoIP calls with a
> server with a public address and the softphones (for the costs) with
> extensions registered on our * box. I configured * four months ago and
> between two extensions and works very well and but later I did the same
test
> on this week and unfortunaly the voice goes out with echo. So I have the
> feeling that maybe there's something wrong with the codecs and wich codecs
> do I need to give the service.

You should try with a hardphone so you can eliminate one of the variables in
the equation. I have heard of problems previously where users were using
softphones and they were introducing the echo. Switching to hardphones
solved it and narrowed down the problem ;)

> Thanks for any help you can give me

You're welcome and hopefully some others can give some insight and maybe
information on their own deployments similar to what you wish to do.

> Carlos Bernat
>
>

Joshua Colp
Digium
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