[asterisk-users] About voip gateway
kevin.larsen at pioneerballoon.com
Tue Dec 9 15:28:15 CST 2014
> I want to create a voip service, I do not know much about it, but
> the first thing I want to know if more than one client can make a
> call at the same time through internet to the PSTN, and what gateway
> should I use for this.
I think the first recommendation any of us will have is to research all
you can as there are a lot of mistakes to be made in the telephony world
and some of them can be expensive and/or dangerous. The kinds of questions
you are asking are not bad to ask, but they do place you squarely at a
It is hard to answer your questions without having further information.
What are you trying to accomplish with this system? Do you need to carry
more than one call? What types of phone service are available where this
will be installed?
For example, a single POTS line will allow you one call in or out of the
PSTN. This is not a limitation of Asterisk, this is a limitation on how
POTS lines work. A PRI style connection (E1 or T1 depending on location)
will allow many more (over 20 calls at once). A SIP trunk is only limited
by the number of lines your trunking provider allows and the bandwidth of
your internet connection. The gateway you would want to use will depend
entirely on what type of connection to the PSTN you are using. A lot of
manufacturers make hardware compatible with Asterisk for physical
connections to the PSTN and a SIP trunk just requires an internet
connection of sufficiently high bandwidth, low latency and a reasonably
stable path to the SIP provider.
Without knowing more about what you are aiming to do, it is hard for
anyone to give you any specific help. You were earlier asked for a
specific example of what you wish to accomplish. Please provide that and
you will get more people responding.
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