Re: [Svxlink-devel] Multi Transmission Problem
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From: Tobias B. <sm...@us...> - 2011-05-01 13:09:27
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On Sunday 24 April 2011 13.48.27 Adi Bier wrote: > > You're right about DTMF, anyone having the correct codes can connect > > or disconnect the linking. > > Hi all, > > I've almost finished my work to change the linking of logics. The > functions has been rewritten and removed from the Logic-class. Now it's > possible to define the way of linking the logics, if it shall beeing > connected during the startup of svxlink and not disconnectable by DTMF > anymore or if a connection has a timeout and so on. > Since it's implemented as singleton, it's (theoretically) controlable > from other svxlink-sections, e.g. an aprs command or from an incoming > echolink session too. > It will still take some days to check, then I will upload a branch and > we can discuss the funtionality. This sounds very good, Adi. I'll look forward to test your implementation. 73's de SM0SVX / Tobias > > 73s de Adi, DL1HRC > > > I understand that you've already evaluated the use of Asterisk but > > there's an asterisk application called Rpt and a channel module named > > chan_rpt that can interface the system with a number of radio > > repeaters to make them work as a radio network. > > > > 73 Erin. > > > > Gustavo - LU8WFY > > > > > > > > > > 2011/4/23 Eren Türkay <er...@pa... <mailto:er...@pa...>> > > > > On Sat, Apr 23, 2011 at 07:13:47PM -0300, Gustavo Conrad wrote: > > > Hi Eren, > > > > Hello Gustavo, > > > > > Sorry I've made a mistake naming LinkLogic where I wanted to say > > > > > > SimplexLogic. I'm sure this makes a lot of confusion to you. > > > > It's not a problem. Although I was confused, this mail made it clear. > > Thank you for your clarification. > > > > > ..... > > > #TX_CTCSS=SQL_OPEN > > > MACROS=Macros > > > LINKS=LinkAllSites > > > FX_GAIN_NORMAL=0 > > > FX_GAIN_LOW=-12 > > > ..... > > > > > > ..... > > > [LinkAllSites] > > > LOGIC1=SimpĺexLogic_Site_A > > > LOGIC2=SimplexLogic_Site_B > > > LOGIC3=SimplexLogic_Site_C > > > COMMAND=94 > > > NAME=ALL_SITES > > > ..... > > > > So, basically, it will do the same thing as I did in previous mail > > with > > "RepeaterLogic"? IMHO, as it's a simplex logic, only one node will be > > able to transmit while others are listening, and the data will not be > > send the node that is transmitting. > > > > However, I didn't get how I am supposed to configure Rx/Tx section in > > "SimplexLogic_Site_A" (and other nodes) I can guess that it will > > listen > > to "Network_Site_A", but where it will send the data to? > > Additionally, I > > cannot grasp how svxlink handles LINKS section. My theory is that > > svxlink detects if there is a signal from one of the Simplex > > nodes. If > > there is, say it's node A, it looks for how they are connected with > > LINKS section. Then, svxlink sends the data to every node *except > > A* by > > looking its TX section for the node. If it's the case, both RX/TX > > section should be the same (Network_Site_A). > > > > > After this you can enable the link (simultaneous operation of > > > > all the logics > > > > > involved) by transmitting the DTMF digits with the command you > > > > selected > > > > > followed by digit "1". In this example it would be 941#. To > > > > disable the > > > > > link send 940#. If you do not operate radios in your system > > > > you'll need an > > > > > alternate way to generate DTMF. > > > > Thanks for this tip! I operate radios in the system. All nodes have > > RF link, and they are connected to Intranet. However, since DTMF > > signals can be guessed, it does not seem to be a secure way to > > manage the link. > > Someone can guess the DTMF sequence, send it to the link and cause > > problems? > > > > > Let me say that I'm not an expert in these subjects but I > > > > suspect that your > > > > > application fits more on another kind of voip technology (such > > > > as Asterisk, > > > > > to name one...). > > > > I don't think so. Although Asterisk is a good solution for voip, I > > don't > > think it does squelch detection, activating/deactivating link with > > DTMF, > > PTT with serial port, echolink support etc. I'm sure svxlink is > > the tool > > to use, but I have much to learn about its configuration :) > > > > > 73! > > > > > > Gustavo - LU8WFY > > > > 73! > > > > -- > > > > . Eren > > > > --------------------------------------------------------------------- > > --------- |