Ascend Archive
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Re: (ASCEND) MAX Upgrade Problem - Help


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.

> 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.

> 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.

> 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.

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

> Livingston manufactures all True DigitalTM modem cards. 

This is true.


 - Steve
  - Systems Manager
  - Community Internet Access, Inc.
  - Gallup and Grants, New Mexico


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