Re: (ASCEND) TNT: series 1 vs series 2 modem cards

[yoni tzafrir <yonitz@isdn.net.il>]

This was something that ascend e-mailed me (but pay attention to my remark in
the end):

> Although Series56-3 cards are compatible with existing Series56 cards
> and can be installed in the same chassis, the Series56-3 cards consume
> more power. If you
> install more than 12 Series56-3 cards in the MAX TNT, you must replace
> the existing power supply with a new high-output power supply. However,
> Ascend
> recommends that if you install any Series56-3 cards, you should replace
> the existing power supply with a new high-output power supply.
>
> If you are using both Series56-3 and existing modem cards and choose not
> to install a high-output power supply, see Table 1 for a list of
> supported configurations.
>
> Table 1. Supported Series56 and Series56-3 configurations with existing
> power supplies
>
>  Number                          Number of existing modem cards
> of Series56-3 cards
>  1                                       1 to 6
>  2                                          1 to 6
>  3                                          1 to 5
>  4
>                          1 to 5
>  5
>                          1 to 4
>  6
>                          1 to 4
>  7
>                          1 to 3
>  8
>                          1 to 3
>  9
>                          1 or 2
>  10
>                          1 or 2
>  11
>                          1
>  12
>                          1
>  13
>                          0
>  14
>                          0
>


so far so good, BUT i had 1 new card, with 4 old ones, and the TNT heated like
mad.with seconds. the ventilators stopped working. and i had to unplug the TNT.
so, when the say: " However, Ascend
> RECOMMENDS that if you install any Series56-3 cards, you should replace
> the existing power supply with a new high-output power supply " they mean
replace it anyway.

yoni.





Joe Pautler wrote:

> A while back I remember seeing a post regarding power requirements
> of the series I and series II 56kbps digital modem cards.  It had
> a little chart of acceptable configurations for mixing the two
> cards, and I believe it was related to the type of power supplies
> in the chassis (based on serial number?).  I thought I saved the
> message, but I can't find it.  I also couldn't find it in the mailing
> list archives or on the ascend web site.  Can someone please point
> me in the right direction?
>
> My exact question is:
>   If we buy a new chassis, with a T3 card (672 lines) can we stock it
>   with 14 of the series II cards (672 modems)?  That would leave one slot
>   left open.  There is a network card in one of the existing
>   chassis in the stack.
>
> Thank you very much for any assistance you can provide!
>
> ___________________________________________________________________________
> Joe Pautler, E.I.T.                             University at Buffalo
> CIT/OSS Network Engineering                     224 Computing Center
> http://www.oss.buffalo.edu/~pautler             (716) 645-3536
>
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