SV: [ltp] which cellphone with TP770 using IR-Port?

[Tino Keitel]

On Thursday, 16. August 2001 17:48, ole-thomas.naringsrud@telenor.com wrote:
> What about high speed GSM or GPRS..??

If you want to use this, the IR connection _could_ be a bottleneck if the 
modem of the cellphone uses hardware compression (I don't know if cellphones 
can do that). If you want to be sure, better use software compression. 

Hardware compression is done by the modem, so if compression ratio is high, 
there is much more traffic between the modem (cellphone) and the ThinkPad 
than between the modem and gateway of the ISP. This traffic can reach the 
limit of the IR connection.

Software compression is done by the ppp driver of your linux kernel, so the 
traffic between the modem and the ThinkPad is already compressed.

But all I heard from a friend of mine is that modems of cellphones are 
usually slow like hell, so I think that even a slow IR port is fast enough. 
:-)

Tino

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