VPN and downstream power

[jghost5]

Hoping someone can shed light: I have a hardware vpn from business server to remote location. Because I use OLD business system with digiport servers for serial printing through vpn I use multiplexor cards to change the serial print to tcp/ip. My print jobs to that location always end up a mess; time out get garbled....etc. We(Vpn Vendor and I) have dbl checked everything hardware related. I use cable service for this vpn and I have noticed that at all my other locations I have a positive downstream power # (36-40) but on this location the downstream power is always a negative #(-4.5). I have no real experiance with how this may affect my vpn and was hoping for someone with cable experiance to shed light for me.
Thanks in advance as always.
Edit: All other locations print fine.

 

[Rockn]

What is your connection over? Is it DSL, Cable, other?

 

[jghost5]

Connection is over cable at both ends.

 

[Rockn]

To quote you "negative #(-4.5)" is your signal strength. Sounds like you may be dropping packets because of a poor or ustable connection. Get the cable company out and have them fix the problem.

 

[jghost5]

Thanks, Cable company have confirmed packet loss at client end. I just wanted to double check everything. I was assuming that the negative number is the culprit but I have no experiance with how data "moves" with cable.
Thanks again.