asterisk users - Nov 2003 - 4 X100P's, 4 7960's Same Box?

I have a friend I am building a phone system for, I would like to use *
 
He owns a "Take Out" restaurant with 4 Phone lines and 4 Phones.
I'm going to use Cisco 7960's for the phones; is there a better phone I
should be using?
 
I need to know if this is possible...
 
On each phone program the appearances of 4 "Extensions" that are
really
the 4 phone lines?
If Phone "A" puts line 1 on hold can phone "B" see it on
hold or will it
just show off hook?
Can the phones ring back (Even the one that did not put the call on
hold) if it's not picked up in 30 or so seconds?
If phone A is using line 1 and phone B is using line 2 will phone C see
the other 2 call appearances?
MOST IMPORTANT can I use 4 X100P's in the same box?   What can I expect?

> I'm going to use Cisco 7960's for the phones; is there a better
phone I
> should be using?
excellent choice.
> I need to know if this is possible...
>
> On each phone program the appearances of 4 "Extensions" that are
really
> the 4 phone lines?
yes for inbound.  1 rings 1... 2 rings 2.. and so on.  Not the best method
of doing this.. but ok.
> If Phone "A" puts line 1 on hold can phone "B" see it
on hold or will it
> just show off hook?
Not possible with SIP... might be with Skinny.  Use parking or transfer.
> Can the phones ring back (Even the one that did not put the call on
> hold) if it's not picked up in 30 or so seconds?
Nope. (See previous answer)
> If phone A is using line 1 and phone B is using line 2 will phone C see
> the other 2 call appearances?
Nope. (Not with SIP)
> MOST IMPORTANT can I use 4 X100P's in the same box?   What can I
expect?
> >From what I read in the posts the X100P is a $10 modem marked up to pay
> for the Asterisk dev, and I don't mind paying for that I just want to
> make sure they are reliable and will get the job done, they will get a
> good workout for about 3 hours a day!
I have 3 in my Dell Poweredge 500SC but you need to have a good bios.  One
that will let you put each card on its own IRQ.
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These warnings are stupid.  They should be at the top if you really want
people to read them.