[Asterisk-Users] Multiple Calls with Asterisk?

[Adam Lewis]

For incoming calls on your POTS lines you need to have your telco
provide the busy rollover (sometimes called "hunt").  This is a common
feature available from the telco when you have several phone lines. 
The idea is that if someone calls a phone number associated with a
line that is in use, rather than getting a busy signal, the telco will
hunt for the next available line, and the call will be connected on
that line.  The process is repeated until the call is connected to an
available line or all lines are busy and a busy signal will be
delivered by the phone company.

When dealing with these analog POTS lines on Asterisk, you will have a
chanel for each line.  Asterisk will recieve a ring on one of several
lines.  You can configure Asterisk to handle calls from any of these
lines in the same way (have them start in the same "context"), which
will effectively recreate this hunt group for incoming calls on
Asterisk.

If you get  your inbound calls from a VoIP provider, it is another
story.  Generally if the provider support multiple simultaneous calls
on a single number, they will all come in on the same chanel.  Both
SIP and IAX (VoIP chanel types) support this.  This may be refered to
as trunking.

I've siplified some of this, but this should give you some good
keywords to look for as you read through the Wiki.

~Adam

On 10/05/05, chawki hammoud <chawkihammoud at yahoo.com> wrote:
> 
> --- Tim Litwiller <tim at litwiller.net> wrote:
> 
> > Your pstn land line can only handle 1 call at a time
> >
> > To handle more at the same number you need a
> > rollover or busy redirect.
> > Then you could forward the next calls to another
> > number. Either more
> > land lines or a voip provider number.
> 
> Please help me understand this.
> Lets's say I have three land lines connected to my *
> box and I have my VOIP provider setup to accept more
> than one call simultaneously. If people dialed one
> telephone number and it was busy, Can Asterisk detect
> a busy signal and forward the call to one of the other
> two landlines?
> 
> Thanks a lot
> 
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