Yes, the PM4 futures look good. I have been following it very closely as I
have been the Assured Access systems, and others. Each has some stronger and
weaker points in contrast to the other. Without breaching my NDA's, I can
state that I found the current and future features of the PM4 and X600/X1000,
including dial, frame, ATM, and management, to be very similiar. Other areas
were not, such as redundency, availability of service, quality of service,
and virtual routers.
My conclusion, after a long history using Livingston products (since the
PM-11) was to move to a new vendor, Assured Access. I think if you too look
closely at the alternatives, you may find that your strong preference for the
PM4 may not be as justafiable as you think...
Specific to your assertions below, yes, I know another vendor that can
deliver the features you are describing, and more. 8-)
>From: MegaZone <megazone@megazone.org>
>Date: Thu, 18 Jun 1998 17:50:21 -0700 (PDT)
>Subject: Re: (PM) PM4 (fwd)
>
>Once upon a time alex@nac.net shaped the electrons to say...
>>Not only that, the PM-4 is ~$100 more per port than the PM-3, is only
>>moderately more dense than the 5800 (which will change soon anyway), and
>
>It is rather more dense than the AS5800. It also has a lot more growth
>room than the AS5800. At first I wasn't mentioning this, but since so
>many people have told me other Lucent reps are talking about it, expect the
>PM-4 to support multiple T3s for dialin in time. DSP die size is shrinking
>across the industry, AND *at the same time* these new DSPs support multiple
>modems sessions in one die!
>
>Two Cisco reps have straight up told me the AS5800 can handle 2 T3s on
>its backplane, possibly 3 - but they don't recommend it. A PM-4 could
>handle 2 T3s PER SLOT - and still have excess. You might even squeeze in
>3 T3s per slot, but that'd be tight - the minimum backplane per slot is
>155Mbps, but there is some overhead. A slot would be able to handle an
>OC-3 (also 155Mbps) I would think. The AS5800 cannot. The PM-4 also
>has a slot which has a 622Mbps interface - to handle an OC-12 - find another
>chassis to do that in this class.
>
>- -MZ
- Marc
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