[Asterisk-Users] Hardware for PBX with 4 incoming/outgoing lines and 20 phones

[Jeff Roberts]

Andrew Elchuk wrote:

> Most of the time we are only using 3 of the lines for calling.  If I 
> used VOIP termination for outgoing calls wouldn't I still need the 4 
> lines to receive all of our incoming calls?  Also do I need to have an 
> IP phone to connect to a Wildcard TDM40B or could I just use the 
> phones we have right now?  Thanks.
>
Don't know if your situation will lend itself to my solution, but it 
seems to work for me:  I called and had the call waiting turned off on 
my pots line and set up busy call forwarding to my nufone number.  Now, 
when someone dials my pots line, the first call comes in over a channel 
bank connected to a t100p.  Each additional call, whether they call the 
pots line or the nufone line comes in over iax.  I've only had a couple 
of simultaneous calls going, but I would think I could have as many as 
my internet connection will support bandwidth wise.  I've been using it 
for a few weeks, and looking at the charges, its pretty cost effective 
to me.  Unless your other three numbers are published or your faxing 
over several lines, I dont see why you can't shut them off and use one 
pots lines and voip for the rest.