[Asterisk-Users] RE: how to manage Digium TDM04B outgoing calls

[Jason Kawakami]

-----Original Message-----

My question 
concern outgoing calls. How can I configure my extensions.conf to get a 
PSTN line on my TDM04B card in the following order : first trying on the 
channel 4 then if 4 is busy then switch to 3 if 3 is busy then switch to 
2 and if 2 is busy then say there's no more line available. I don't want 
to dial on the first channel as it's my main number and all calls are 
received by that channel if the line isn't busy. I don't have to manage 
it for incoming calls (it can't be done anyway) as it's done not on my 
side but on the side of my provider (with the callforward on busy thing) 
but for outgoing calls the asterisk server must manage it.

-put all of the zap channels in a group and specify that you want the
outgoing calls to choose from the back of the group.  Look on the wiki for
the g and G options to the Dial()application.
<snip>
So if you think the server can handle 5 TDM400P cards let me know. If 
not what FXOs device I should purchased? I don't want to switch to PRI 
for now (I know it would be easier to setup that way) as will be moving 
to a new building in a year or so and don't want to invest on that for 
now (as there's only one PRI provider where we are currently)

-you will probably have issues with that many zap cards in one server.  Look
at the IAXy as an ATA for the fax machines (be careful, faxing over IP can
be FUN!)or look at having a couple of machines sitting next to one another
that are trunked together.

Good Luck!

Jason Kawakami
www.optellabs.com
Salt Lake City, UT