[Asterisk-Users] Switch between FXS ports

[Rich Adamson]

> The Call Forward On Busy does cost YOU money each time you forward a call.

No, that is telco dependent. Most US telco's do not charge for that
as long as the forwarded number is a local number. If its not, then
LD charges apply. But in some US cities, you are correct that an
additional change _might_ apply.

> Call hunting group is different from Call forwarding.

Yup, that will work as well, however in the US that generally involves
a Service Order (and charge), and in some cases will require a telephone
number change (depends upon the exact type of central office switch the
telco is using).

Rich


 
> In a hunt group you have 2 or more phone lines grouped together. When a 
> call for a number associated with the group comes into the telco switch, 
> the switch checks which lines inside the group are available, then the 
> switch selects one of the available lines where it will send the call 
> to. This selection is done using a predefined algorythm (random, round 
> robin, ascending, descending,....)
> 
> Call hunting groups are also in most times used on  a T1 PRI or E1 PRI. 
> When a call comes in for a phonenumber associated with the T1/E1 only 1 
> channel will ring.
> 
> Some telcos may charge additional fees to setup a call hunting group, 
> but in cases you make a certain usage of Call forwarding, it may be less 
> expensive to use a call hunting group.
> 
> Best regards,
> 
> Marc
> 
> Rich Adamson wrote:
> >>>I have two FXS port on my TDM card.
> >>>channel 4 is attached with a telco line that I use frequently. And channel 3
> >>>have another telco line. but I dont publish that number to my friends.
> >>>If I receive a call through channel 4, how can I handover that call to
> >>>channel 3 ..so that I can keep channel 4 open for incoming call.
> >>>
> >>
> >>Basically, you'd need to have the telco have the phone calls auto 
> >>forwarded to the next available line.  That's pretty common for them to do.
> > 
> > 
> > That's exactly what I do with our business line. "Call Forward on Busy" is
> > a common description for that telco service. (I simply forward that next
> > call to an unlisted/unpublished number which also terminates in Asterisk.)
> > 
> > 
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