HSP & HCF Modems?

[TheCorm]

Whats the difference and what do they stand ford, I guess the SP in HSP stands for signal processor or signal processing?

I used to think that HSP was a software modem and HCF is a hardware modem but i'm not sure now.

Whats the deal?

 

[todpod]

I don't know much but I have a HCF modem, it is a winmodem, their is a beta driver for linux, but I couldn't get it to work, have to recomplie something. other then that you know as much as I do

 

[Mem]

What is HSP?

HSP stands for Host Signal Processing. This refers to using the host computers processor (cpu) in place of a dedicated chip on the modem (DSP) to perform the Digital Signal Processing

,normally PCtel chipsets have these type,it`s a Winmodem.

You also have HSF modems which are software modems(Winmodem) which let the CPU do all the work(like the HSP above),HCF modems( HCF chipset is actually a single-chip PCI software-modem (controllerless, aka Win Modem) have a DSP to take most of the load off the CPU, both HSF and HCF normally use Rockwell / Conexant chipsets.


Nowadays the load on the CPU is very small even with WinModem,I`ve both Hardware and Winmodem(HCF type )and get the same pings ,performance in online gaming etc.

 

[TheCorm]

Excellent...cleared it up a bit there.

Cheers.

 

[stevewm]

HSP stands for Host Signal Processing, these modems are nothing more than a curcuit board with phone jacks, no work is done on the modem itself, EVERYTHING is done in software with your CPU. HSF stands for Host Signal Function and are exactlly the same as HSP modems.

HCF stands for Host Control Function, these modems are hardware modems for the most part, the only thing that seperates them from hardware modems is that they lack a controller (part that accepts AT commands and controls modem functions) The actual modulation/demodulation work is done on the modem, unlike the all software HSP and HSF "modems"


todpod: There isn't a Linux driver for HCF modems yet, Conextant promised one by the end of last year, but it has yet to show. They did however release a linux driver for their HSP chipsets. I've tried the HSP driver myself, it does make the modem go off-hook, but thats as far as it would go, wouldn't not dial at all. Nor would it hang up!