KM-5050 slow faxes

[Cirrus]

We are placing 250 of these with a new client and have run into a big problem. Faxes are failing at a hight rate. Especially the large faxes. Have noticed that the ones that go through take forever. The Laniers they had previously would send 60 pages in seven minutes and ours are taking five times longer. If we lose this I got a feeling someone is going to get fired just on general principle.

Any one seen a solution for this?

[qtech]

Unfortunately, I have seen this problem (KM-4050), but do not have a solution, even after firmware upgrades. A law firm we service sends 70, 80, and 90 page faxes, and the transmission time ranges from 25 to 40 minutes. It was explained to me that the transmission time can rely heavily on the receiving machine, and the amount of memory that the receiving machine has.
I do find it strange that when I enter the maintenance mode to adjust the fax tx speed, it doesn't list 33.6bps as an option.....the fastest speed listed is 14.4bps. I would think that this may be a solution, but have not found a way to select 33.6 on that model. I am also interested to see what others have to say about this problem.......
Chris

[aragul]

V.34 is the 33.6 kbit/s transfer mode. I've seen it elsewhere in the fax options. Also, when you send a fax you can choose what speed it goes at, and it defaults to 33.6.

Other than that, all I know is that I hate faxes.

[Eric1968]

You can get 33k6 on a really good faxline. Also the other fax should be able to receive at 33k6. Most of the time they fall back to 31k2 or lower. BTW, why does a customer wants to send a fax of 60+ pages? Isn't it better to suggest the customer to mail this kind of volumes? You can also switch off ECM to save some seconds.

[tech07]

slow faxes

New firmware version 27....released just a couple of weeks ago speciffically addresses this problem

[bsm2]

faxes

sending faxes of over 60 pages is no good period
sending faxes that large is back in the stone age
fax rate is based on line noise and fax speed of the other machine

change scan to text and normal may help with speed


have them send via e-mail will take about 60 seconds bam your done.

[TA ITT FRANCE]

for slow faxes

Hello,

I also met the same kind of problems.
To solve them, I make a simulation 600 and 601.
For we must associate the fax card M KM5050 copier.

This should solve your problems.

(excuse for my poor english)

[Tebow83]

I dont know if its viable but what about using i-fax???

[Santander]

First thing you should do is go to SIM 608 and change the percentage of errors before a RTN (retrain negative) to 20% which is selection 4. A marginal telephone line will cause the modem to step backwards so you are not ever going to transmit at 33.6K. Setting the number of errors per line to 20% does not appreciable effect the quality, but it does help with the modem stepping down all the time. Turning ECM off as previously suggested also will help, but changing the percentage of errors per line will probably do the trick. If you leave ECM on it will also help as it reduces the number of times that the unit requests a retransmission of a bad line as it increases the tolerance for bad data.

BTW, if you do the math on what your customer told you about sixty pages in seven minutes this works out to 7 seconds per page including overhead (EOP, training,etc.) even with a short-protocol I have never seen this happen under the most ideal conditions. If they are getting their info from the activity reports, most machines only count the actual transmission time and not the overhead of retraining the modems or idle time in-between pages, so I would take their claim with a grain of salt.

Hope this helps and you satisfy the user's needs

[10871087]

Turning ECM off seems to fix many fax issues for us.

[aragul]

U670 -> Action List will print out a list of how many faxes were sent and received at which speeds. Try this on a known good machine first to see what normal values should be (21.6k and 14.4k were common for me). On a Falcon 2, this is under U617.

U670 -> Protocol List will print out a trace of the last fax. There's a bunch of weird acronyms, but google or a LDC-650 manual can give a good introduction. It can show you how long it takes to handshake, how often it renegotiates speeds, how long each page takes to send, etc.

[Santander]

Turning ECM Off

Turning ECM off seems to fix many fax issues for us.

The reason we opt for changing the error threshold while leaving ECM turned on is it eliminates the user's complaints when they get a really bad telephone line and it either compresses the data so they can't read a line(s) of the fax or it stretches it out so it looks like a font on steroids.

With ECM turned off every fax will just repeat the last good line of data received when it encounters errors which causes the compression or expansion of a line of the fax message. Changing the threshold eliminates this and is transparent to the user.

[evilprince]

Re: KM-5050 slow faxes

how do you turn ecm off all the time on a kyocera 5050?
thx in advance

[Santander]

Re: KM-5050 slow faxes

how do you turn ecm off all the time on a kyocera 5050?
thx in advance

You can turn off ECM under U608.