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WindStream Users and TP-LINK TD-8816 Modem
on March 12, 2015
For WindStream Users, there is a FAQ within their customer support about 3rd Party modems. The following is a copy/paste of the article.
I only needed to enter 0/35 VPI/VCI instead of the default 8/35 VPI/VCI, along with my user/pass for using this modem. Do not forget to update your Linux computer's /etc/resolv.conf to 192.168.1.1 (instead of WindStream's 192.168.254.254 DNS), else you'll only be able to access websites without DNS resolving. (ie. Only via entering the IP address instead of www.foo.net)
I also noticed the TP-LINK's default MTU/MSS is set at 1480/1400 for PPPoA/PPPoE. I think these should be set to "MTU 1492, MSS 1452". An easily read Internet document showing how to easily adjust your MTU is at "http://www.dslreports.com/faq/695". And then further set MSS to "MSS=MTU-40". (Also see Cisco MTU/MSS published documentation via the Internet.)
These modems sound like they're fabricated from Linksys routers including Linksys firmware.
# nmap -O -v 192.168.1.1
Device type: broadband router|webcam|router
Running (JUST GUESSING): Telewell embedded (89%), D-Link embedded (86%), Linksys embedded (86%)
OS CPE: cpe:/h:telewell:tw-ea501 cpe:/h:dlink:dcs-6620g cpe:/h:linksys:befsr41
Aggressive OS guesses: Telewell TW-EA501 ADSL modem (89%), D-Link DCS-6620G webcam or Linksys BEFSR41 EtherFast router (86%)
If you're around 8,000 feet or more from your telco box, try specifying G.DMT mode within Advanced Setup > ADSL menu. G.DMT is essentially ADSL1 and is more forgiving with high line attenuation or low SNR levels, as well as distance. If you're only receiving around 3Mbps down stream, then you're not missing any of the features of ADSL2, besides likely acquiring a more stable connection when using G.DMT.
If you have varying Line SNR DB levels for up and down, try cleaning up your telephone junction box mounted to the side of your house. Ensure connections are free of any corrosion and all wires on making a secure connection. I stabilized my Line SNR levels by bypassing the modular plug with Cat 5/6 wire, with also doubling the leads to each terminal. (Cat 5/6 is quite brittle.) Once I did this, I gained one or two DB for the SNR levels, as well as completely stabilizing the SNR levels! Line Attenuation seems unaffected by these significant improvements.
1) Is this TP-LINK TD-8816 any better than the SAGEM F@st 1704? Pinging the local modem seems to be faster by 0.1 or 0.2 milliseconds, except when the TP-LINK is trying to acquire the PPPoA/PPPoE connection.
1) The TP-LINK 192.168.1.1 interface seems to have some significant delays for some odd reason. The apparent fix for the delays is to disable "IGMP Snoop" within the "Interface Setup > LAN" menu. (ie. http://192.168.1.1/basic/home_lan.htm) Still getting delays at times though. Likely also has something to do with the MTU/MSS settings, as well as some significant network blocking or "CPU runs" when acquiring the PPP (PPPoA/PPPoE) connection after each saved setting click or power reset.
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3rd Party Broadband DSL Modem
Published 08/20/2006 11:16 AM | Updated 08/25/2008 02:22 PM
I have a broadband DSL modem that I purchased somewhere else. Is it compatible, and do you support them?
Windstream offers very limited support for broadband DSL modems not issued by Windstream. We cannot guarantee these modems will be compatible with our Central Office equipment. When encountering technical difficulties with your broadband service in conjunction with a non-Windstream modem, our technicians can make sure to see if the DSL signal exists at the Network Interface Device (NID). Windstream cannot provide technical support or assistance in setting up a non-supported DSL modem and recommends in calling the modem's manufacturer for further assistance. When you call the modem's manufacturer, please provide them with the following information:
Former CTC Customers
Type of Connection: DHCP
Type of Connection: PPPoE
For a PPPoE configuration, your Internet username and password is typically the only required information.
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ADDITIONAL WINDSTREAM SETTINGS
Modulation: ADSL2 PLUS (ADSL2+)
Annex Mode: ANNEX_A
Encapsulation: PPPoA (Possibly with VC-Mux? PPPoE is also supported. PPPoA maybe faster on ATM networks due to less overhead, while PPPoE simply further encapsulates the packets classifying the packets as Ethernet packets.)