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Re: (ASCEND) MAX Upgrade Problem - Help

At 08:53 PM 8/3/97 -0600, Stephen Fisher wrote:
>
>On Sun, 3 Aug 1997, Bennie wrote:
>
>> I was just scanning the Livingston site and stubbled across this. Is any
>> or all of this true? What I was really looking for was an ISP mailing
>> list. 
>>
>> Q. Don't Ascend and Cisco have "digital modem" offerings? 
>> 
>> A.Other Remote Access Server (RAS) vendors confuse customers by calling
>> their integrated modems "digital" modems. However, they actually employ
>> a hybrid combination of analog modem chips from Rockwell or AT&T and
>
>Yes, the new 56k boards are mostly/fully DSP based like Livingston as I
>understand it though.

Fully DSP based. You can see more about the architecture of both Ascend and
Cisco 56K modems on their respective web-pages...

>> Livingston's True Digital modem technology uses a DSP design that boosts
>
>This is true, each modem consists of a DSP chip and two little chips to
>control it on the other side of the board.

Pretty *similar* design on all RAS now...

>> Q. How many True Digital modems can the PortMaster 3 support? 
>> 
>> A.True Digital modem cards are high-density digital modems that support
>> either 8 or 10 V.34 modems per card. The PortMaster 3 can support up to
>> 46 PRI T1 or 60 PRI E1 modems via six rear-panel expansion slots. Any
>> combination of modem cards can be used in any slot.
>
>This is true.

The MAX4000/4 can support 72, the 4048 and 4002 can support 48. (E1 is
different;)

>> Q. Who developed the True Digital modem technology? 
>> 
>> A.Livingston designed the True Digital modem technology using standard
>> off-the-shelf DSPs and widely compatible V.34 modem source code.

I think maybe USR (boo, hiss ;) may question this.....

>This is true, but they are upgrading to Lucent DSP chips and code in a few
>weeks.


Kevin

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