BFD.
1. The PM-3 is smaller over all, so the total volume isn't radically different.
2. The PM-3 is less expensive per port. 2 PM-3s should run less than 1 4004.
3. Putting 4 T1s in one chassis is riskier than 2 in 2 chassis.
4. The PM-3 can FULLY populate the PRI/T1 lines with modems. ALL channels
can be used. The 4004 with 4 PRI/T1 has up to 96 lines but only 72 modems.
5. The Ascend has all kinds of videoconferencing code, etc, that we just
aren't interested in doing.
I did this a while back, I'll comment it:
PM-3 vs MAX 4002
I picked the 4002 because it is the closest MAX to the PM-3 - 2 PRI
Both have 6 expansion slots, single ethernet, dual PRI.
The MAX 4002/4004 is US only however and is apparently limited to 48
modems. The PM-3 goes to 60. The 4002 can be upgraded in the field to a
4004 with 4 PRIs, something we cannot do (You'd need another chassis). But
at that point you have 96 lines of PRI and 72 modems max (their cards
are 12 modems per). So you can't use a full box on all channels for analog
support. I think that is a drawback to the design personally, but I've a
feeling it is a religious issue with no real right answer.
Both the PM-3 and 4002 support dialin as well as nailed up WAN connections
using PPP and Frame Relay.
Reading their info it looks like base support is flat channelized T1, which
Frame Relay and ISDN as part of the 'Hybrid Access' software upgrade. [This
is true. You must pay extra for each feature - included in the PM-3.]
I also don't see mention of multilink PPP support across chassis. [This JUST
started shipping, so they have no lead on us. And it looks like their
method is very similar, though possibly not as flexible.]
Apparently the 4002 is nothing but a 4004 with the software crippling the
other 2 ports. You need to upgrade the software to get the other 2 ports.
List of 4002 chassis is $11,000, digital modem cards are $6,250 each. I don't
quite understand what you need to make a 4002 like a PM-3 - I *think* you
need 'Hybrid Access64' for $1,500. There is also an option to enable ISDN
for $1,000 and Frame Relay for $1,000 - but I think those are both part of
Hybrid Access. They don't seem to have a great deal of Pricing info on the
web, or I couldn't find it. I got these prices when I stumbled across
<http://www.ascend.com/products/max4002-4/max4002-4produpdate.txt>
Since it isn't clear, and you have to call/fax/email for pricing info (lame)
I can't be sure of the current prices or bundles, etc. And I'm not
positive what one needs. But even doing a basic setup, their list is a lot
higher than ours. And I know, from sales, that our ISP discount also comes
out to a lower price for a unit configured with modems.
So the MAX 4002 seems more comparable to a PM-3 than the RA6300. The MAX
has features/baggage that the PM-3 doesn't - we don't have all those expansion
cards to turn a PM-3 into a video conferencing system, hub router (they have
V.35 and T1 port cards), or BRI cards. Interestingly to me, the BRI cards
and modem cards take the same slots, so it looks like using BRI reduces the
number of modems. It isn't clear that you can use the built in modems with
users coming in on BRI, but I'll give them the doubt on that one. The 4002
supports TACACS and TACACS+ as well as RADIUS. But with everyone and their
duck supporting RADIUS these days, I personally don't see it as a major issue.
Also, many of the features that are standard on a PM-3 are options on the
MAX - for a fee of course. ISDN, Frame Relay, V.120 Rate Adaption, and
V.25bis dialing are options.
I based this on:
<http://www.ascend.com/products/max4002-4/max4002-4index.html> (all the links)
<http://www.ascend.com/products/max4002-4/max4002-4produpdate.txt>
-MZ
-- Livingston Enterprises - Chair, Department of Interstitial Affairs Phone: 800-458-9966 510-426-0770 FAX: 510-426-8951 megazone@livingston.com For support requests: support@livingston.com <http://www.livingston.com/> Snail mail: 4464 Willow Road, Pleasanton, CA 94588