Re: [PLUG] O.T.VoIP and Satellite
By way I tried that URL you gave me but my browsers keep on coming up saying that there is a missing plugin, but can not figure out what it is. On Mon, Dec 29, 2014 at 3:31 PM, Chuck Hast wrote: > MIke > Thank you for the observations. I did test the connection, since I am using > cellular, I found several phone numbers to test against, and all of them > provide > good inbound audio but my outbound audio is just all corrupted. > > I do not think that the DHCP assignment caused the problem, but I am trying > to figure out if something else was changed on the network at the same > time. > i.e. different routing. > > I know that normally ip addresses are not geo based, but it was always of > note > that in the past any search or application that took me to a map would > always > take me to a map of the area I live in, now since I am one HughesNet, I see > that I am now taken to sites that are no where near where I am, and I > figured > that it was probably where the gateway to the uplink to the satellites was > located. I know that they have several of them, so I thought that might be > the issue. > > I need to get on a wired internet connection and put the uCell on it and > make > sure I do not have something going on with the outbound side of the device. > Inbound audio is so good, and it was working so well prior to the failure > that > I am left wondering. > > On Mon, Dec 29, 2014 at 2:14 PM, Mike C. wrote: > >> > >> > -- >> > >> > Message: 8 >> > Date: Sun, 28 Dec 2014 23:05:21 -0800 >> > From: Chuck Hast >> > Subject: [PLUG] O.T.VoIP and Satellite >> > To: "Portland Linux/Unix Group" >> > Message-ID: >> > < >> > cadnfbv8dmg_x4oqrl8edtq1mz1z8cmonhqghmuhqnaayfvd...@mail.gmail.com> >> > Content-Type: text/plain; charset=UTF-8 >> > >> > Folks, >> > This is a issue that I have been trying to figure out, and I have been >> > talking to the two parties involved. >> > >> > I am a HughesNet user (that is all we have out in the woods here) >> > I have been using a AT&T microcell on the satellite link since July. >> > >> > When I moved here I was told that the microcell would probably not >> > work, or at best with a lot of latency, well it did quite well, I always >> > told people at the start of a call that I was on a satellite link and >> that >> > there would be some delay, no issues. >> > >> > Then on the 15th of Dec the outbound audio went to trash. I can >> > hear anything on the far end just fine, voice quality is good nothing >> > missing. But the outbound sounds totally distorted if there is any- >> > thing at all. >> > >> > AT&T has been working with me on it, so far they do not see any- >> > thing wrong with the microcell, HughesNet totally washes their >> > hands, the thing that I have observed is that this whole thing took >> > a dump after there was a DHCP assignment change ( Hughesnet >> > seems to change them all the time) the other thing that I had noticed >> > was that prior to that change, applications that tried to map your IP >> > address to your location usualy showed me as being somewhere >> > near Kansas City. Now they think I am near Chicago. >> > >> > Does anyone on the list have any experience with this sort of thing. >> > I am going to see if I can get a hub on between the microcell and >> > the rest of the network and try to sniff where it is talking to, then >> see >> > if I do a traceroute to see what manner of delays I see on the link. >> > >> > In my miserable experience with VoIP, if there was a issue it always >> > seemed like it showed up on both paths, but in this case it is only the >> > outbound, so I am assuming that something is causing a delay there >> > somewhere. >> > >> > The microcell comes on line and appears to be happy, but no joy >> > with the outbound audio. >> > >> > >> > >> > >> Hey Chuck - I'd start by going to this website and testing you VOIP >> connection and hopefully get some useful data. >> http://www.voipqualitytest.com/ >> >> With many years of Network Engineering work experience, I'd say it's >> highly >> unlikely this problem is caused by a DHCP assignment change. Especially if >> the only change in your internet connection is outbound voip call quality. >> >> I also wouldn't put too much into geo-ip mapping either. ISPs are assigned >> blocks of ip addresses from IANA and those assignments are not >> geographically based. Geo-ip location takes extra logic, such as Google's >> My Location service which requires a browser that supports W3C's >> Geolcation >> API. Google also makes use of it by getting your web browser to provide >> information an wifi access points nearby. >> >> Cheers, >> >> Mike >> ___ >> PLUG mailing list >> PLUG@lists.pdxlinux.org >> http://lists.pdxlinux.org/mailman/listinfo/plug >> > > > > -- > > Chuck Hast -- KP4DJT -- > Glass, five thousand years of history and getting better. > The only container material that the USDA gives blanket approv
Re: [PLUG] Rebuilding laptop battery packs
On 12/29/2014 05:58 PM, Keith Lofstrom wrote: > I have accumulated a bunch of old Lenovo T60 laptop battery > packs that don't hold a charge. Lifting the label - the > cells are standard, perhaps replaceable by new ones. > > Anybody interested in rebuilding battery packs? > > My packs are glued or plastic-welded together, so I would need a > hot knife to open them, appropriate adhesive to put them together > again, a small spot welder to tab the batteries, and presumably > a ventilated space to work, in case a cell catches fire. > > With enough participants we could buy the right tools and buy > cells in bulk. Not sure how many types we would need. My T60s > and X60s both use CG18650 cells, which are $39 for 12 Panasonic > cells on eBay, $499 for 360 cells. Chinese cells might be > cheaper (both ways). > > This cell size is often used for "vaping"; does that push price > up or down, or merely attract dangerous counterfeits? > > Keith > Interesting project. http://www.linuxjournal.com/content/rebuilding-laptop-battery Watch out for the (non)resettable fuse (depending on design) on some PCBs that blow to protect the battery pack from trouble: http://hackaday.io/page/247-replacing-lenovo-laptop-lithium-batteries http://hackaday.com/2011/08/01/who-knew-thinkpad-batteries-require-a-jump-start/ Then you also have to hope the rest of the circuitry is stll ok! These days I just hunt Amazon, or Batteries+ (local PDX-Vancouver, also can special order), for a good deal. The house repair "honey-do" list is never ending... ___ PLUG mailing list PLUG@lists.pdxlinux.org http://lists.pdxlinux.org/mailman/listinfo/plug
Re: [PLUG] Rebuilding laptop battery packs
Might check prices for replacement batteries (not the cells inside) on Amazon - I have gotten several very OK batteries very cheap for cameras and 2 computers. Thanks JK At 05:58 PM 12/29/2014, Keith Lofstrom wrote: >I have accumulated a bunch of old Lenovo T60 laptop battery >packs that don't hold a charge. Lifting the label - the >cells are standard, perhaps replaceable by new ones. > >Anybody interested in rebuilding battery packs? > >My packs are glued or plastic-welded together, so I would need a >hot knife to open them, appropriate adhesive to put them together >again, a small spot welder to tab the batteries, and presumably >a ventilated space to work, in case a cell catches fire. > >With enough participants we could buy the right tools and buy >cells in bulk. Not sure how many types we would need. My T60s >and X60s both use CG18650 cells, which are $39 for 12 Panasonic >cells on eBay, $499 for 360 cells. Chinese cells might be >cheaper (both ways). > >This cell size is often used for "vaping"; does that push price >up or down, or merely attract dangerous counterfeits? > >Keith > >-- >Keith Lofstrom kei...@keithl.com >___ >PLUG mailing list >PLUG@lists.pdxlinux.org >http://lists.pdxlinux.org/mailman/listinfo/plug ___ PLUG mailing list PLUG@lists.pdxlinux.org http://lists.pdxlinux.org/mailman/listinfo/plug
Re: [PLUG] Rebuilding laptop battery packs
i have heard (but cannot confirm) that the spot-welder part of things can be a bit tenuous. especially since li-ion cells have a predilection for "rapid venting with flame" I also seem to recall something about inter-cell variation and charge balancing that's impractical for the home tinkerer but the details escape me. there's probably a more detailed pro/con/howto on candlepowerforums, the probable source of my hearsay. regardless, I'd be interested in the outcome. On Dec 29, 2014 6:47 PM, "Larry T" wrote: > Always interested in different things, and this sounds different. I may > be able to borrow a styrofoam knife for a trial run, I'll check tomorrow. > > Larry T > > On Mon, Dec 29, 2014 at 5:58 PM, Keith Lofstrom > wrote: > > > I have accumulated a bunch of old Lenovo T60 laptop battery > > packs that don't hold a charge. Lifting the label - the > > cells are standard, perhaps replaceable by new ones. > > > > Anybody interested in rebuilding battery packs? > > > > My packs are glued or plastic-welded together, so I would need a > > hot knife to open them, appropriate adhesive to put them together > > again, a small spot welder to tab the batteries, and presumably > > a ventilated space to work, in case a cell catches fire. > > > > With enough participants we could buy the right tools and buy > > cells in bulk. Not sure how many types we would need. My T60s > > and X60s both use CG18650 cells, which are $39 for 12 Panasonic > > cells on eBay, $499 for 360 cells. Chinese cells might be > > cheaper (both ways). > > > > This cell size is often used for "vaping"; does that push price > > up or down, or merely attract dangerous counterfeits? > > > > Keith > > > > -- > > Keith Lofstrom kei...@keithl.com > > ___ > > PLUG mailing list > > PLUG@lists.pdxlinux.org > > http://lists.pdxlinux.org/mailman/listinfo/plug > > > ___ > PLUG mailing list > PLUG@lists.pdxlinux.org > http://lists.pdxlinux.org/mailman/listinfo/plug > ___ PLUG mailing list PLUG@lists.pdxlinux.org http://lists.pdxlinux.org/mailman/listinfo/plug
Re: [PLUG] Rebuilding laptop battery packs
Always interested in different things, and this sounds different. I may be able to borrow a styrofoam knife for a trial run, I'll check tomorrow. Larry T On Mon, Dec 29, 2014 at 5:58 PM, Keith Lofstrom wrote: > I have accumulated a bunch of old Lenovo T60 laptop battery > packs that don't hold a charge. Lifting the label - the > cells are standard, perhaps replaceable by new ones. > > Anybody interested in rebuilding battery packs? > > My packs are glued or plastic-welded together, so I would need a > hot knife to open them, appropriate adhesive to put them together > again, a small spot welder to tab the batteries, and presumably > a ventilated space to work, in case a cell catches fire. > > With enough participants we could buy the right tools and buy > cells in bulk. Not sure how many types we would need. My T60s > and X60s both use CG18650 cells, which are $39 for 12 Panasonic > cells on eBay, $499 for 360 cells. Chinese cells might be > cheaper (both ways). > > This cell size is often used for "vaping"; does that push price > up or down, or merely attract dangerous counterfeits? > > Keith > > -- > Keith Lofstrom kei...@keithl.com > ___ > PLUG mailing list > PLUG@lists.pdxlinux.org > http://lists.pdxlinux.org/mailman/listinfo/plug > ___ PLUG mailing list PLUG@lists.pdxlinux.org http://lists.pdxlinux.org/mailman/listinfo/plug
[PLUG] Rebuilding laptop battery packs
I have accumulated a bunch of old Lenovo T60 laptop battery packs that don't hold a charge. Lifting the label - the cells are standard, perhaps replaceable by new ones. Anybody interested in rebuilding battery packs? My packs are glued or plastic-welded together, so I would need a hot knife to open them, appropriate adhesive to put them together again, a small spot welder to tab the batteries, and presumably a ventilated space to work, in case a cell catches fire. With enough participants we could buy the right tools and buy cells in bulk. Not sure how many types we would need. My T60s and X60s both use CG18650 cells, which are $39 for 12 Panasonic cells on eBay, $499 for 360 cells. Chinese cells might be cheaper (both ways). This cell size is often used for "vaping"; does that push price up or down, or merely attract dangerous counterfeits? Keith -- Keith Lofstrom kei...@keithl.com ___ PLUG mailing list PLUG@lists.pdxlinux.org http://lists.pdxlinux.org/mailman/listinfo/plug
Re: [PLUG] O.T.VoIP and Satellite
On Mon, Dec 29, 2014 at 6:04 PM, Keith Lofstrom wrote: > On Sun, Dec 28, 2014 at 11:05:21PM -0800, Chuck Hast wrote: >> Does anyone on the list have any experience with this sort of thing. >> I am going to see if I can get a hub on between the microcell and >> the rest of the network and try to sniff where it is talking to, then see >> if I >> do a traceroute to see what manner of delays I see on the link. > > Typical internet is asymmetric - when somebody is watching a movie > on netflix or surfing the web, they are receiving a firehose of > bits and sending out a trickle of ACK packets. > > VOIP usage is symmetric, moderate bandwidth data streams in both > directions. > > Satellites are also asymmetric - they have a limited number of > transponders with limited bandwidth, which they will allocate to > maximize overall customer retention, which means catering to the > majority. Which isn't thee and me. > Which points to another possibility. Maybe the dish has moved slightly out of alignment. Is your signal strength the same as it was before Dec 15th? Bill ___ PLUG mailing list PLUG@lists.pdxlinux.org http://lists.pdxlinux.org/mailman/listinfo/plug
Re: [PLUG] O.T.VoIP and Satellite
On Sun, Dec 28, 2014 at 11:05:21PM -0800, Chuck Hast wrote: > Does anyone on the list have any experience with this sort of thing. > I am going to see if I can get a hub on between the microcell and > the rest of the network and try to sniff where it is talking to, then see > if I > do a traceroute to see what manner of delays I see on the link. Typical internet is asymmetric - when somebody is watching a movie on netflix or surfing the web, they are receiving a firehose of bits and sending out a trickle of ACK packets. VOIP usage is symmetric, moderate bandwidth data streams in both directions. Satellites are also asymmetric - they have a limited number of transponders with limited bandwidth, which they will allocate to maximize overall customer retention, which means catering to the majority. Which isn't thee and me. The satellite provider probably recently reallocated a customer uplink transponder as a customer downlink transponder, to better serve the netflix users. There might be an FCC or ITU document or ruling about this. Do you know which particular satellite you are talking to? One of the ANIKs? This may also affect other satellite-linked services; long haul trucking, remote gas stations and ATMs. Look for other disgruntled customers. Keith -- Keith Lofstrom kei...@keithl.com ___ PLUG mailing list PLUG@lists.pdxlinux.org http://lists.pdxlinux.org/mailman/listinfo/plug
Re: [PLUG] O.T.VoIP and Satellite
MIke Thank you for the observations. I did test the connection, since I am using cellular, I found several phone numbers to test against, and all of them provide good inbound audio but my outbound audio is just all corrupted. I do not think that the DHCP assignment caused the problem, but I am trying to figure out if something else was changed on the network at the same time. i.e. different routing. I know that normally ip addresses are not geo based, but it was always of note that in the past any search or application that took me to a map would always take me to a map of the area I live in, now since I am one HughesNet, I see that I am now taken to sites that are no where near where I am, and I figured that it was probably where the gateway to the uplink to the satellites was located. I know that they have several of them, so I thought that might be the issue. I need to get on a wired internet connection and put the uCell on it and make sure I do not have something going on with the outbound side of the device. Inbound audio is so good, and it was working so well prior to the failure that I am left wondering. On Mon, Dec 29, 2014 at 2:14 PM, Mike C. wrote: > > > > -- > > > > Message: 8 > > Date: Sun, 28 Dec 2014 23:05:21 -0800 > > From: Chuck Hast > > Subject: [PLUG] O.T.VoIP and Satellite > > To: "Portland Linux/Unix Group" > > Message-ID: > > < > > cadnfbv8dmg_x4oqrl8edtq1mz1z8cmonhqghmuhqnaayfvd...@mail.gmail.com> > > Content-Type: text/plain; charset=UTF-8 > > > > Folks, > > This is a issue that I have been trying to figure out, and I have been > > talking to the two parties involved. > > > > I am a HughesNet user (that is all we have out in the woods here) > > I have been using a AT&T microcell on the satellite link since July. > > > > When I moved here I was told that the microcell would probably not > > work, or at best with a lot of latency, well it did quite well, I always > > told people at the start of a call that I was on a satellite link and > that > > there would be some delay, no issues. > > > > Then on the 15th of Dec the outbound audio went to trash. I can > > hear anything on the far end just fine, voice quality is good nothing > > missing. But the outbound sounds totally distorted if there is any- > > thing at all. > > > > AT&T has been working with me on it, so far they do not see any- > > thing wrong with the microcell, HughesNet totally washes their > > hands, the thing that I have observed is that this whole thing took > > a dump after there was a DHCP assignment change ( Hughesnet > > seems to change them all the time) the other thing that I had noticed > > was that prior to that change, applications that tried to map your IP > > address to your location usualy showed me as being somewhere > > near Kansas City. Now they think I am near Chicago. > > > > Does anyone on the list have any experience with this sort of thing. > > I am going to see if I can get a hub on between the microcell and > > the rest of the network and try to sniff where it is talking to, then see > > if I do a traceroute to see what manner of delays I see on the link. > > > > In my miserable experience with VoIP, if there was a issue it always > > seemed like it showed up on both paths, but in this case it is only the > > outbound, so I am assuming that something is causing a delay there > > somewhere. > > > > The microcell comes on line and appears to be happy, but no joy > > with the outbound audio. > > > > > > > > > Hey Chuck - I'd start by going to this website and testing you VOIP > connection and hopefully get some useful data. > http://www.voipqualitytest.com/ > > With many years of Network Engineering work experience, I'd say it's highly > unlikely this problem is caused by a DHCP assignment change. Especially if > the only change in your internet connection is outbound voip call quality. > > I also wouldn't put too much into geo-ip mapping either. ISPs are assigned > blocks of ip addresses from IANA and those assignments are not > geographically based. Geo-ip location takes extra logic, such as Google's > My Location service which requires a browser that supports W3C's Geolcation > API. Google also makes use of it by getting your web browser to provide > information an wifi access points nearby. > > Cheers, > > Mike > ___ > PLUG mailing list > PLUG@lists.pdxlinux.org > http://lists.pdxlinux.org/mailman/listinfo/plug > -- Chuck Hast -- KP4DJT -- Glass, five thousand years of history and getting better. The only container material that the USDA gives blanket approval on. ___ PLUG mailing list PLUG@lists.pdxlinux.org http://lists.pdxlinux.org/mailman/listinfo/plug
[PLUG] O.T.VoIP and Satellite
> > -- > > Message: 8 > Date: Sun, 28 Dec 2014 23:05:21 -0800 > From: Chuck Hast > Subject: [PLUG] O.T.VoIP and Satellite > To: "Portland Linux/Unix Group" > Message-ID: > < > cadnfbv8dmg_x4oqrl8edtq1mz1z8cmonhqghmuhqnaayfvd...@mail.gmail.com> > Content-Type: text/plain; charset=UTF-8 > > Folks, > This is a issue that I have been trying to figure out, and I have been > talking to the two parties involved. > > I am a HughesNet user (that is all we have out in the woods here) > I have been using a AT&T microcell on the satellite link since July. > > When I moved here I was told that the microcell would probably not > work, or at best with a lot of latency, well it did quite well, I always > told people at the start of a call that I was on a satellite link and that > there would be some delay, no issues. > > Then on the 15th of Dec the outbound audio went to trash. I can > hear anything on the far end just fine, voice quality is good nothing > missing. But the outbound sounds totally distorted if there is any- > thing at all. > > AT&T has been working with me on it, so far they do not see any- > thing wrong with the microcell, HughesNet totally washes their > hands, the thing that I have observed is that this whole thing took > a dump after there was a DHCP assignment change ( Hughesnet > seems to change them all the time) the other thing that I had noticed > was that prior to that change, applications that tried to map your IP > address to your location usualy showed me as being somewhere > near Kansas City. Now they think I am near Chicago. > > Does anyone on the list have any experience with this sort of thing. > I am going to see if I can get a hub on between the microcell and > the rest of the network and try to sniff where it is talking to, then see > if I do a traceroute to see what manner of delays I see on the link. > > In my miserable experience with VoIP, if there was a issue it always > seemed like it showed up on both paths, but in this case it is only the > outbound, so I am assuming that something is causing a delay there > somewhere. > > The microcell comes on line and appears to be happy, but no joy > with the outbound audio. > > > > Hey Chuck - I'd start by going to this website and testing you VOIP connection and hopefully get some useful data. http://www.voipqualitytest.com/ With many years of Network Engineering work experience, I'd say it's highly unlikely this problem is caused by a DHCP assignment change. Especially if the only change in your internet connection is outbound voip call quality. I also wouldn't put too much into geo-ip mapping either. ISPs are assigned blocks of ip addresses from IANA and those assignments are not geographically based. Geo-ip location takes extra logic, such as Google's My Location service which requires a browser that supports W3C's Geolcation API. Google also makes use of it by getting your web browser to provide information an wifi access points nearby. Cheers, Mike ___ PLUG mailing list PLUG@lists.pdxlinux.org http://lists.pdxlinux.org/mailman/listinfo/plug
