I guess it depends on how you want to set it up. As a standalone repeater it needs no internet connection. if you want to use connectivity to other systems, you need and internet connection and it can or not not be behind a firewall depending on your skill and/or expertise in securing same... In reality they work just fine behind a firewall as only one UDP port needs to be port forwarded to process inbound network traffic.. Outbound and inbound connection related traffic is TCPIP which NAT handles fine... Now I am in particular speaking of alternate implementations of hardware on alternate systems.. Not Icom's Implementation of Icom hardware and servers.. I have a general knowledge of those but do not currently own same.
Digital voice repeating using D-Star Voice protocols will soon be possible without needing a PC.. but right now that is what is needed.. subject to change in days.. not weeks.. as it is soon to be released or maybe is already... The internet side is where PC based software is needed to handle packet streams..in and out. Some folks have implemented bent pipe repeaters for P25 and D-Star but coupling the discriminator to the tx mod line is not an optimal repeater.. What is currently done with GMSK modems etc.. is strip off the digital GMSK signals in the discriminator and break them down to headers and payload and generate a new transmitted "repeated" signal with correct headers and ID's etc.. as well as separate them for UDP transit on the internet to destinations determined by the user..At this time a PC is used to decipher the data that comes out of the modem chip in a USB stream... is repackaged and routed as needed by the PC ... including back to the repeater transmitter.. A particular GMSK modem board or maybe even 2 versions will soon be able to repeat on the modem board without need of a PC... Both hardware/software authors of GMSK modem boards are working on this... Doug KD8B Doug KD8B La Rue Communications wrote: > > Does the Linux / XP box need to be behind a firewall in order to > prevent unauthorized access to the boxes? Or are these boxes > completely separate from any internet access? > Im a computer expert, but not a radio expert......yet. :) > John Hymes > La Rue Communications > 10 S. Aurora Street > Stockton, CA 95202 > > ----- Original Message ----- > *From:* Doug Bade <mailto:[email protected]> > *To:* [email protected] > <mailto:[email protected]> > *Sent:* Friday, April 02, 2010 8:26 AM > *Subject:* RE: [Repeater-Builder]D-Star conversion of existing > Repeaters > > I have built both sound device/software versions of the repeater > and hardware modem/software versions and both are operational > however Linux support is behind Windows support on the software > side. Not for the lack of trying of the authors… There are > internal Linux issues at hand.. that are in the middle of > operational “issues”. They are being fixed so I would call a lot > of that still Alpha to Beta… but in XP is ready to work assuming > you can do your part on the hardware side… > > Some of us would rather deploy site computers as Linux.. but that > is currently admin level deployment level today and not really > ready for the masses unless you are tolerant of “bugs”. XP will do > in the mean time albeit less than optimal solution in my book.. > > I will be glad to post my results as I can but I tend to post on > the digital yahoo groups associated with the project as I assume > here is not the appropriate place for such… > > While it is a “repeater” and I am a “builder” it is a focused > technical subject most analog builders have little interest in… as > seen in some negative comments whenever D-Star is brought up. > > Doug > > KD8B > ------------------------------------ Yahoo! Groups Links <*> To visit your group on the web, go to: http://groups.yahoo.com/group/Repeater-Builder/ <*> Your email settings: Individual Email | Traditional <*> To change settings online go to: http://groups.yahoo.com/group/Repeater-Builder/join (Yahoo! ID required) <*> To change settings via email: [email protected] [email protected] <*> To unsubscribe from this group, send an email to: [email protected] <*> Your use of Yahoo! Groups is subject to: http://docs.yahoo.com/info/terms/
