I'm in Laurel, MD in the Russett area. I have a 3 Mbit down / 768k up DSL service and verizon land line for voice.
I had speed and line dropping problems with the old Westell 2200 modem but then I received a new Actiontec GT784WNV and have the same problems with it so there's likely something wrong with the line quality.
I'm a Software engineer and have some experience with network set-up, I use a standalone PC firewall and the
DSL modem is in bridged mode.
Home PC -> netgear switch -> ipcop firewall -> Actiontec GT784WNV (bridged mode) -> verizon ISP
This does work fine a lot of the time, then suddenly the network gets really slow. Usually some time in the
late afternoon and into the evening. I've confirmed the speed drop with the speed tests on http://www.dslreports.com/speedtest. My firewall also records logs of when connections and drops occur, a bad day looks like this:
Total Hits for Log Section IPCop, 2014-05-16
Older Newer
Time Section
21:23:34 ipcop PPP has gone up on ppp0
21:23:22 ipcop PPP has gone down on ppp0
20:27:25 ipcop PPP has gone up on ppp0
20:27:18 ipcop PPP has gone down on ppp0
20:12:57 ipcop PPP has gone up on ppp0
20:12:50 ipcop PPP has gone down on ppp0
19:54:09 ipcop PPP has gone up on ppp0
17:31:50 ipcop PPP has gone down on ppp0
17:30:30 ipcop PPP has gone up on ppp0
(shortened)
I've also noticed lots of buzzing in the voice line, I've removed all phone equipment with exception of the dsl modem, that does not help. I've also removed all line noise sources I can think of including turning off dimmer lights, CFL lights, phones not in use and their dsl filters. I've also replaced the wall RJ11 jack to the modem with a new one.
I then went and unbridged the Actiontec modem to get into the stats page and got these values when
it was having speed and connection problems:
Broadband Status
Broadband Parameter Status
VPI: 0
VCI: 35
Broadband Mode Setting: ADSL
Broadband Negotiated Mode: G.DMT
Connection Status: CONNECTED
Downstream Speed: 3360 Kbps
Upstream Speed: 864 Kbps
Retrains: 0
Retrain Timer: 0 Days, 0H:1M:59S
ATM QoS class: UBR
Near End CRC Errors Interleave: 6722
Near End CRC Errors Fastpath : N/A
Far End CRC Errors Interleave : 12
Far End CRC Errors Fastpath : N/A
30 Minute Near End CRC Interleave : 9029
30 Minute Near End CRC Fastpath : N/A
30 Minute Far End CRC Interleave : 0
30 Minute Far End CRC Fastpath : N/A
Near End RS FEC Interleave : 0
Near End RS FEC Fastpath : N/A
Far End RS FEC Interleave : 0
Far End RS FEC Fastpath : N/A
30 Minute Near End FEC Interleave : 417
30 Minute Near End FEC Fastpath : N/A
30 Minute Far End FEC Interleave : 30
30 Minute Far End FEC Fastpath : N/A
30 Minute Discarded Packets Downstream : 0
30 Minute Discarded Packets Upstream : 0
SNR Downstream : 8 dB
SNR Upstream : 6 dB
Attenuation Downstream : 31 dB
Attenuation Upstream : 17 dB
Power Downstream 7.6 dBm
Power Upstream 7.6 dBm
The SNR seems to be very poor.
Mark
