External modem seems to be slower than internal.

[hotfusion]

I've aquired an external V90 modem to try out, but all indications are that it is about 25% slower than my internal V90 one.
This is an impression I've built up over a little time, and represents differences in download speeds.
As if to prove it, web pages are slow to load also.
Disappointing, really, as I expected the same performance.
Is there anything that can be tweaked?
I have the correct latest drivers installed, receive and transmit buffers are at maximum, and the port speed is set to 115200.
Ideas??
My suggestions are what I would try myself. If incorrect, I welcome corrections to my rather limited knowledge. Andy.

 

[edfair]

You might try setting speed to 57K. You might also try one of the lowpass filters. Either might help you, but then either might hurt. Ed Fair
unixstuff@juno.com
Any advice I give is my best judgement based on my interpretation of the facts you supply. Help increase my knowledge by providing some feedback, good or bad, on any advice I have given.

 

[hotfusion]

Hmmmmm........ connection speed is always an unwavering 31,200.
I've tried different settings, also ticked the box 'always connect at this speed', but when I do this, it fails to connect, even with the port set at 38,000.

Com port 2, which is the one I'm using for this modem is set to 115,200 in 'win.ini', and trying other lower settings makes no difference.

Are externals usually slower than internals? I could understand it if that was the case, what with internals slotting directly into the PCI slot, instead of having to go through a serial port. My suggestions are what I would try myself. If incorrect, I welcome corrections to my rather limited knowledge. Andy.

 

[edfair]

Function of the modems. The 57K was to limit the speed that the computer talks to the modem control posts, not the modem to modem speed. This is the 115K that you see on com2.
Internals go thru a serial port if they are hardware, processor talks directly to hardware if they are winmodems, but in either case the processor is fast enough to keep ahead.
And this is also a function of the box on the other end. Ed Fair
unixstuff@juno.com
Any advice I give is my best judgement based on my interpretation of the facts you supply. Help increase my knowledge by providing some feedback, good or bad, on any advice I have given.

 

[hotfusion]

O.K., thanks for that, but another thing - the cable I'm using between the com port and the modem is quite long, about 5 metres. This is the only cable I had going spare......
Could this length adversly affect the data transfer from PC to external modem? Could this be the bottleneck?

After all, I know the line is capable of more - I've seen it.
The computer is fast enough - Pentium 3 600Mhz.
The modem is a V90, so by definition is fast enough.

Questions, questions..... My suggestions are what I would try myself. If incorrect, I welcome corrections to my rather limited knowledge. Andy.

 

[edfair]

15 feet shouldn't be a problem. Specs are max 50. Modems are talking at the same speed but there may be tweaks for the handshaking. Do you have the modem manual? You would be looking for information on the S registers and lookin for anything that would affect the handshake. Ed Fair
unixstuff@juno.com
Any advice I give is my best judgement based on my interpretation of the facts you supply. Help increase my knowledge by providing some feedback, good or bad, on any advice I have given.