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Re: (ASCEND) MAX 4004> Seeing Data Rate of 31200 after changing to 33.6

At 03:04 PM 5/19/97 -0400, Neil Movold wrote:
>I have recently changed my configuration under 90-800 Mod Config/Tserv 
>options/Max Baud from 28800 to 33600 in order to see if our 33.6 
>customers could work at higher speeds than 28.8.  Since the change on 
>both of my maxen, I have seen customers get data rates of 31200.  Is this 
>normal?  The cards are both the MOD-8 and MOD-12 cards.  Should I not 
>expect to see data rates of 33600?  Is this a hardware limitation?

Over the last few weeks I've seen postings of connect rates and %ages
of each. In al examples there were 33.6 connects in the low %ages. Hence
this is not a hardware limitation. You may find you have less success with
CT1 lines than PRI - just from experience....

>From a marketing perspective, the 31200 speeds is more than the 28800, 
>although not by much, and can be marketted as a speed improvement to the 
>customer base.

I think *all* modems are labelled with "up to XXX speed", are they not?
                                        ^^^^^
>What about these K56FLEX cards at lower speeds with heat etc as 
>problems?  I have seen before on the list that the boxes can only handle 
>48 56Kb modems do to heat etc. 

Heat is less of an issue with the new cards than the old ones, and there
is NO such limitation in the MAX400X. The MAX4048 is only allowed to
carry 48, so maybe that caused some of the confusion.

> However, if the maxen were configured to 
>only handle speeds to 33600, would that have any affect on the heat 
>problems and thus allow for a full 72 modems in a 4004 chassis?  The 
>thought here is to take advantage of the K56FLEX Upgrade plan to replace 
>the recently purchased MOD-12 28.8 modems with the newer 56Kb modems in 
>order to take advantage of the better performance of the new cards.

The MAX400X will happily take 72 modems, and you should use your own
data to determine the "performance" improvement (having read so many
performance reviews that are outright contradictory with each other).


Kevin Smith                              Updated Service and Support
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