Re: [Dorset] Home PBX Resources.
A local company that one of my students runs used to implement Asterisk as a VOIP PBX in schools. It is a linux solution. Interesting that I found it here: https://www.ubuntupit.com/top-20-best-linux-voip-and-video-chat-software/ Peter On 07/05/2020 11:00, t...@ls83.eclipse.co.uk wrote: Hi Ralph On 06/05/2020 14:39, Ralph Corderoy wrote: Hi, Conversation in the virtual meeting late last night turned to establishing a PBX at home hanging off a single POTS line. Here's some related resources based on what was said and a bit of searching since. What are FXO and FXS? A brief summary: https://en.wikipedia.org/wiki/Foreign_exchange_service_(telecommunications)#Use_in_voice-over-IP_systems More detail: https://www.dceexpress.com/what-are-fxs-and-fxo/ So I think the incoming POTS would connect to an FXO device which, `from the point of view of a telephone exchange, appears to be a telephone'. The other side of the FXO would be a digital interface to the computer, e.g. a PCI Express card. Yes, my understanding too. Once it's digital, VoIP phones could be used around the house with each having a unique extension number. Android and iOS devices can also run apps to be a VoIP phone; there might be lots of those already around, especially older models. A well-known telephony interface manufacturer is https://www.sangoma.com/telephony-cards/analog/ One device that keeps coming up in the Linksys SPA3102. Discontinued some years ago, but seems to have been well thought of. There's one or two on Ebay along with what looks to be Chinese knock-offs. It's difficult to find any current products that will do this - I guess nowadays people use a VOIP provider... An alternative is for the existing land-line number to terminate with a VoIP supplier on the Internet and to use the home's Internet connection thereafter. A POTS does have the advantage of working in a power cut. Yes! Cheers Tim -- Next meeting: Online, Jitsi, Tuesday, 2020-06-02 20:00 Check to whom you are replying Meetings, mailing list, IRC, ... http://dorset.lug.org.uk New thread, don't hijack: mailto:dorset@mailman.lug.org.uk
Re: [Dorset] Home PBX Resources.
Hi Ralph On 06/05/2020 14:39, Ralph Corderoy wrote: Hi, Conversation in the virtual meeting late last night turned to establishing a PBX at home hanging off a single POTS line. Here's some related resources based on what was said and a bit of searching since. What are FXO and FXS? A brief summary: https://en.wikipedia.org/wiki/Foreign_exchange_service_(telecommunications)#Use_in_voice-over-IP_systems More detail: https://www.dceexpress.com/what-are-fxs-and-fxo/ So I think the incoming POTS would connect to an FXO device which, `from the point of view of a telephone exchange, appears to be a telephone'. The other side of the FXO would be a digital interface to the computer, e.g. a PCI Express card. Yes, my understanding too. Once it's digital, VoIP phones could be used around the house with each having a unique extension number. Android and iOS devices can also run apps to be a VoIP phone; there might be lots of those already around, especially older models. A well-known telephony interface manufacturer is https://www.sangoma.com/telephony-cards/analog/ One device that keeps coming up in the Linksys SPA3102. Discontinued some years ago, but seems to have been well thought of. There's one or two on Ebay along with what looks to be Chinese knock-offs. It's difficult to find any current products that will do this - I guess nowadays people use a VOIP provider... An alternative is for the existing land-line number to terminate with a VoIP supplier on the Internet and to use the home's Internet connection thereafter. A POTS does have the advantage of working in a power cut. Yes! Cheers Tim -- Next meeting: Online, Jitsi, Tuesday, 2020-06-02 20:00 Check to whom you are replying Meetings, mailing list, IRC, ... http://dorset.lug.org.uk New thread, don't hijack: mailto:dorset@mailman.lug.org.uk
Re: [Dorset] Hibernate in (K)Ubuntu
On Wednesday, 6 May 2020 19:21:47 BST Terry Coles wrote: > sudo hibernate --dry-run > hibernate:Warning: Tuxonice binary signature file not found. > terry@OptiPlex:~$ > > I installed tuxonice-userui, but that made no difference. Maybe the system > needs rebooting, but that would mean I would lose all the data computed, so > that will have to wait. > > I'm going to Suspend instead. Well the good news is that Suspend appears to have worked and my Ibercivis Tasks appear to have resumed from where they left off. Thanks for the idea Tim! I've just spent some time looking into this tuxonice thing, but with no real success so far. I found this: https://launchpad.net/~tuxonice/+archive/ubuntu/ppa so I applied the PPA, but when I ran apt update, I got: Ign:1 http://ppa.launchpad.net/tuxonice/ppa/ubuntu eoan InRelease Hit:2 http://gb.archive.ubuntu.com/ubuntu eoan InRelease Hit:3 http://gb.archive.ubuntu.com/ubuntu eoan-updates InRelease Err:4 http://ppa.launchpad.net/tuxonice/ppa/ubuntu eoan Release 404 Not Found [IP: 91.189.95.83 80] Hit:5 http://gb.archive.ubuntu.com/ubuntu eoan-backports InRelease Hit:6 https://packages.microsoft.com/repos/ms-teams stable InRelease Hit:7 http://security.ubuntu.com/ubuntu eoan-security InRelease Reading package lists... Done E: The repository 'http://ppa.launchpad.net/tuxonice/ppa/ubuntu eoan Release' does not have a Release file. N: Updating from such a repository can't be done securely, and is therefore disabled by default. N: See apt-secure(8) manpage for repository creation and user configuration details. TBH, I'm not going to spend any more time on this. Suspend appears to work OK for me and apart from a flashing LED and extra power consumption overnight, there seem to be no disadvantages to it. However, if anyone was considering trying to get hibernate to work, here's your starting point perhaps. Note that on the page I linked to above it states that: 'In general, you do NOT need to change any configuration file and you do NOT need to install the hibernate package.' I presume that the tuxonice-userui, which is in the 19.10 Repository (even though the tuxonice kernel patch isn't), would make configuration easier. -- Terry Coles -- Next meeting: Online, Jitsi, Tuesday, 2020-05-05 20:00 Check to whom you are replying Meetings, mailing list, IRC, ... http://dorset.lug.org.uk New thread, don't hijack: mailto:dorset@mailman.lug.org.uk
