Please see updates below.... On Fri, Jan 28, 2011 at 12:46 PM, Mark Phillips wrote: > Thanks to everyone for their help on this problem. After replacing my > phone, learning some of wireshark's features (way cool stuff), I have been > able to get wifi calling working from my office network. I have to change > some settings in both my wireless access point and my router.....I need some > feedback if these changes are opening my network up for problems. > > To recap, my network has a Motorola cable modem connected to a Linksys > BEFSX-41 router, and then I have a Linksys WRT54G Wireless router configured > as a WiFi access point. Lots of switches to connect the LAN to various > computers. > > 1. On the WRT54G access point, I had to disable MAC filtering. I had it > setup as only permitting certain devices based on MAC address. When enabled, > I can't connect to the T-Mobile network for WiFi calls. > > 2. On the BEFSX-41 router I had to disable the 'firewall protection, which > means I have disabled SPI. If this is enabled, then my phone can't connect > to T-Mobile for WiFi calls. I still have these setting enabled: > Block Anonymous Internet Requests > Filter Multicast > Filter IDENT (Port 113) > The BEFSX-41 has a DMZ option for port 4, so I connected that port directly to the WRT54G, turned on firewall protection, and I can now make wifi calls from a somewhat more secure network. Still can not have MAC address filtering on the wireless side, but I think that is probably OK. Am I missing anything? Mark > > I don't think #1 is a big issue, but #2 scares me. If either one is a major > security problem, can you suggest any way I can isolate the phone in someway > to shore up the security for the rest of the network. > > Thanks! > > Mark > > > On Sat, Jan 22, 2011 at 8:13 PM, Joseph Sinclair < > plug-discussion@stcaz.net> wrote: > >> Something like Wireshark (or other similar tool) on the local network >> might help you diagnose the root of the problem you have with T-Mobile WiFi >> calling at home. >> You'll be "drinking from the firehose" when you monitor the detail traffic >> for your network, but if you can filter down to just the packets to/from >> your phone you may be able to see what kind of network issues it's having >> and figure out how to make it work more reliably. >> >> Mark Phillips wrote: >> > The Gizmo5 service is gone...Google acquired them in Thursday, November >> 12, >> > 2009. It is being rolled into google voice; not yet released. >> > >> > I am trying to understand how google voice can help me make calls over >> WiFi. >> > I don't really want another phone number. Is that the only way to >> connect my >> > phone for WiFi calling? Is there no way to diagnose why my network setup >> > won't allow WiFi calling from my phone? >> > >> > Thanks, >> > >> > Mark >> > >> > On Sat, Jan 22, 2011 at 9:44 AM, Lisa Kachold > >wrote: >> > >> >> Hi Mark and Jordan, >> >> >> >> On Sat, Jan 22, 2011 at 9:33 AM, Jordan Aberle < >> jordan.aberle@gmail.com>wrote: >> >> >> >>> Have you tried this? >> >>> >> >>> http://tinyurl.com/luwroy >> >>> >> >> This is HOT! >> >> >> >> Excerpt: >> >> >> >> The one big thing Google Voice doesn't offer, besides automated >> >> telemarketer taunting, is free voice-over-internet phone calling >> through >> >> your cellphone. On an Android phone, however, you can use the Gizmo5 >> >> service , Google Voice, and a free application to >> call >> >> anyone for free. >> >> >> >> A free, open-source, and unofficial Android app, Guava< >> http://gizmo5.com/guava.html?loc=guava>, >> >> gives any Android phone the ability to make and take calls over >> Gizmo5's >> >> VoIP service, connected through a Google Voice phone number. It works >> over >> >> Wi-Fi, 3G, or, for the daring, EDGE. You probably won't want to use >> Guava as >> >> your primary phone call manager, as the call quality varies with your >> >> connection and really works best over Wi-Fi. That said, if you're >> running up >> >> against your minute allotment, or find yourself in a basement-like spot >> with >> >> decent Wi-Fi but really bad cell coverage, Guava is a great little tool >> to >> >> have at your disposal. >> >> >> >> It's also worth noting that, depending on who your carrier is, making a >> >> VoIP call over an EDGE or 3G network may violate your contract's terms >> of >> >> service. A little "hard" data use now and then likely won't be noticed, >> but >> >> if you plan on using Guava heavily with your cellular data plan, you >> should >> >> check and read into what's tolerated and what's not before embarking on >> your >> >> bold data-only adventure. >> >> Mark, will you let us know how it goes? >> >> >> >>> On Sat, Jan 22, 2011 at 9:01 AM, Mark Phillips >> >>> wrote: >> >>>> This is not totally off topic.....Android is based on Linux....;-) >> >>>> >> >>>> I need some advice from an expert in networks to give me some advice >> on >> >>>> getting my phone to make WiFi calls.... >> >>>> >> >>>> Anyway, I have a T-Mobile MyTouch 4g phone. It is supposed to be able >> to >> >>>> make calls over WiFi, which do not use an plan minutes...ie "free" >> >>> calls. I >> >>>> depend on this phone for my business, and I have a wireless network >> at >> >>> the >> >>>> office, so I don't have to pay for gillions of minutes. This worked >> >>> great >> >>>> when I had my Blackberrys - I could talk all day in the office and >> not >> >>> use >> >>>> any minutes. All of this is above board with T-Mobile - I actually >> pay a >> >>> low >> >>>> monthly fee for unlimited WiFi calling. >> >>>> >> >>>> Anyway, much to my chagrin, I discovered yesterday that I had gone >> way >> >>> over >> >>>> my plan minutes. I checked with T-Mobile, and none of my calls had >> gone >> >>> over >> >>>> WiFi. The agent refunded all the charges for the over-plan minutes >> and >> >>> gave >> >>>> me extra minutes to get through the rest of the month. She sent me to >> >>>> technical support, and we could not get my phone to make calls over >> my >> >>> WiFi >> >>>> network. Even though the phone says I am connected to WiFi. So, I >> went >> >>> to >> >>>> the T-Mobile corporate store in Fashion Square, and the manager (she >> has >> >>> the >> >>>> same phone) and I tried to connect to the mall WiFi, and we could >> >>> connect to >> >>>> the mall WiFi, but could not make WiFi calls. Same error - could not >> >>> connect >> >>>> to T-Mobile network. I then tried to make a WiFi call at Starbucks, >> and >> >>> it >> >>>> worked! It also worked at Barnes and Noble after I agreed to the free >> >>>> Internet terms and services (didn't work before then). >> >>>> >> >>>> I googled for issues with WiFi calls with this phone, and found a lot >> of >> >>>> them. Sometimes it works and sometimes it doesn't. The error message >> >>> that >> >>>> pops up says the phone cannot connect to the T-Mobile network. >> T-Mobile >> >>> is >> >>>> aware of the issue, but does not have a fix or ETA for one. >> >>>> >> >>>> One posting had this to say about the WiFi calling..... >> >>>> >> >>>> The WiFi Calling app is Kineto's WiFi Calling app branded for >> T-Mobile. >> >>> The >> >>>> WiFi Calling app is an implementation of 3GPP GAN, which allows >> >>> something on >> >>>> the Internet to get into a cellular network and do stuff (in this >> case, >> >>> make >> >>>> and receive calls).If you care to pull up the most recent version of >> the >> >>>> spec, linked above, you'll find that "registering" (ie, logging into >> >>> home >> >>>> base) involves these steps (get a glass of warm milk and see 8.4.1.6) >> >>> ... >> >>>> 1) Performing a DNS query to get the address of thing it's trying to >> >>> connect >> >>>> to (if necessary) >> >>>> >> >>>> 2) Setting up an IPSec tunnel to thing resolved in step 1 (called a >> >>> SEGW) >> >>>> 3) Resolving and connecting to (using TCP over the tunnel setup in >> step >> >>> 2) >> >>>> yet another thing called a GANC >> >>>> >> >>>> 4) Sending the GANC a "register request", which includes your phone's >> >>> IMSI, >> >>>> information about the cell you're currently connected to, or last >> >>> connected >> >>>> to if no longer connected, and other stuff >> >> This is a capacity and QoS issue on the other side. Get another app. >> >> >> >> >> >>>> 5) Getting back a response that the GANC is happy with you and all is >> >>> well >> >>>> I started to think that perhaps I have a router issue on my network. >> I >> >>> have >> >>>> a Linksys WRT54G wireless access point going through a BEFSX-41 >> Linksys >> >>>> router to my cable modem. I checked the routers, and IPsec is enabled >> >>> for >> >>>> both. The WRT54G uses MAC filter to allow only certain devices to >> >>> connect, >> >>>> and WPA Personal, AES algorithm, and a shared key of 64 characters in >> >>> it. >> >>>> The WRT54G says I am connected to the phone when I enable WiFi on the >> >>> phone. >> >>>> This is a long way to get to my question...thanks for staying with >> me. >> >>> is >> >>>> there a way to look at what the phone is doing when I try to enable >> WiFi >> >>>> calling to see where it fails? A wireless sniffer?? Does any of the >> >>> above >> >>>> give you network gurus an idea of what may be wrong and if it could >> be >> >>> in >> >>>> issue with my router? >> >>>> >> >>>> Thanks for any help you can provide....I would hate to go back to a >> >>>> Blackberry as I really like Android now! >> >>>> >> >>>> Mark >> >> >> >> -- >> >> >> >> (503) 754-4452 >> >> (623) 688-3392 >> >> >> >> http://www.obnosis.com >> >> >> >> >> >> --------------------------------------------------- >> >> PLUG-discuss mailing list - PLUG-discuss@lists.plug.phoenix.az.us >> >> To subscribe, unsubscribe, or to change your mail settings: >> >> http://lists.PLUG.phoenix.az.us/mailman/listinfo/plug-discuss >> >> >> > >> > >> > ------------------------------------------------------------------------ >> > >> > --------------------------------------------------- >> > PLUG-discuss mailing list - PLUG-discuss@lists.plug.phoenix.az.us >> > To subscribe, unsubscribe, or to change your mail settings: >> > http://lists.PLUG.phoenix.az.us/mailman/listinfo/plug-discuss >> --------------------------------------------------- >> PLUG-discuss mailing list - PLUG-discuss@lists.plug.phoenix.az.us >> To subscribe, unsubscribe, or to change your mail settings: >> http://lists.PLUG.phoenix.az.us/mailman/listinfo/plug-discuss >> > >