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331 results for “pbx”
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Как сделать виртуальную АТС на базе VPS
Несмотря на популярность мессенджеров и телеконференций, ни один офис ещё не отказался от телефонной связи. Люди такие существа, что иногда предпочитают общаться голосом. В каждом офисе установлена мини-АТС, которая коммутирует внутренние звонки. Телефоны сотрудников подключаются к коммуникационному шкафу или коробочке с Asterisk (как на КДПВ), а она подключена к телефонной сети общего пользования (PSTN или ТСОП). Таким образом, сотню офисных телефонов можно повесить на один внешний номер. В общем, мини-АТС — совершенно необходимая вещь. Виртуальная или облачная АТС (hosted PBX) — это услуга для компаний, которая заменяет им обычную офисную АТС. Вместо того, чтобы покупать специализированное телекоммуникационное оборудование или выделять отдельный компьютер с Asterisk , они заказывают услугу на удалённом хостинге. И этот компьютер с Asterisk (IP-АТС) физически размещается у провайдера. Таким образом, виртуализация добралась и до АТС, всё в русле современных тенденций.
https://habr.com/ru/companies/ruvds/articles/814083/
#ruvds_статьи #АТС #виртуальная_АТС #Asterisk #PBX #IPАТС #SIP #Prometheus #аудиоскремблер #распознавание_речи #IPтелефония #Linphone #VoIP #PSTN #ТСОП #FreePBX #FreePBX_Distro #InterAsterisk_eXchange #IAX #RFC_5456
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Как сделать виртуальную АТС на базе VPS
Несмотря на популярность мессенджеров и телеконференций, ни один офис ещё не отказался от телефонной связи. Люди такие существа, что иногда предпочитают общаться голосом. В каждом офисе установлена мини-АТС, которая коммутирует внутренние звонки. Телефоны сотрудников подключаются к коммуникационному шкафу или коробочке с Asterisk (как на КДПВ), а она подключена к телефонной сети общего пользования (PSTN или ТСОП). Таким образом, сотню офисных телефонов можно повесить на один внешний номер. В общем, мини-АТС — совершенно необходимая вещь. Виртуальная или облачная АТС (hosted PBX) — это услуга для компаний, которая заменяет им обычную офисную АТС. Вместо того, чтобы покупать специализированное телекоммуникационное оборудование или выделять отдельный компьютер с Asterisk , они заказывают услугу на удалённом хостинге. И этот компьютер с Asterisk (IP-АТС) физически размещается у провайдера. Таким образом, виртуализация добралась и до АТС, всё в русле современных тенденций.
https://habr.com/ru/companies/ruvds/articles/814083/
#ruvds_статьи #АТС #виртуальная_АТС #Asterisk #PBX #IPАТС #SIP #Prometheus #аудиоскремблер #распознавание_речи #IPтелефония #Linphone #VoIP #PSTN #ТСОП #FreePBX #FreePBX_Distro #InterAsterisk_eXchange #IAX #RFC_5456
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Web application security has DVWA and WebGoat. VoIP and WebRTC security hasn't had anything like it ... until now.
We built DVRTC (Damn Vulnerable Real-Time Communications): a hands-on lab for learning VoIP/WebRTC attack techniques. Full dockerized stack with Kamailio, Asterisk, rtpengine, and coturn — each configured to exhibit specific vulnerable behaviors.
7 exercises covering SIP extension enumeration, RTP bleed, SIP digest leaks, credential cracking (online and offline), TURN relay abuse, and traffic analysis. There's a live instance at pbx1.dvrtc.net you can test against right now.
https://www.enablesecurity.com/blog/introducing-dvrtc-damn-vulnerable-real-time-communications/
GitHub: https://github.com/EnableSecurity/DVRTC/
#infosec #webrtc #voipsecurity #sipsecurity #penetrationtesting #training #TURN
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Web application security has DVWA and WebGoat. VoIP and WebRTC security hasn't had anything like it ... until now.
We built DVRTC (Damn Vulnerable Real-Time Communications): a hands-on lab for learning VoIP/WebRTC attack techniques. Full dockerized stack with Kamailio, Asterisk, rtpengine, and coturn — each configured to exhibit specific vulnerable behaviors.
7 exercises covering SIP extension enumeration, RTP bleed, SIP digest leaks, credential cracking (online and offline), TURN relay abuse, and traffic analysis. There's a live instance at pbx1.dvrtc.net you can test against right now.
https://www.enablesecurity.com/blog/introducing-dvrtc-damn-vulnerable-real-time-communications/
GitHub: https://github.com/EnableSecurity/DVRTC/
#infosec #webrtc #voipsecurity #sipsecurity #penetrationtesting #training #TURN
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Web application security has DVWA and WebGoat. VoIP and WebRTC security hasn't had anything like it ... until now.
We built DVRTC (Damn Vulnerable Real-Time Communications): a hands-on lab for learning VoIP/WebRTC attack techniques. Full dockerized stack with Kamailio, Asterisk, rtpengine, and coturn — each configured to exhibit specific vulnerable behaviors.
7 exercises covering SIP extension enumeration, RTP bleed, SIP digest leaks, credential cracking (online and offline), TURN relay abuse, and traffic analysis. There's a live instance at pbx1.dvrtc.net you can test against right now.
https://www.enablesecurity.com/blog/introducing-dvrtc-damn-vulnerable-real-time-communications/
GitHub: https://github.com/EnableSecurity/DVRTC/
#infosec #webrtc #voipsecurity #sipsecurity #penetrationtesting #training #TURN
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What am I fishing for here? #telephone calls 😁
This is all above board (as its internal monitoring)- but old tech way is surprisingly most GDPR compliant - it separates call metadata (which I don't want, I can get that from other sources) from audio which I do want.
I'm not even interested in exact *content* of calls here, what I'm monitoring is overall audio quality to make sure nothing is glitched / daleked at our end now calls are 100% #VOIP (alas, I can't do anything about ropey #LTE networks our staff and service users might be using)
I'm also testing how #Grandstream #ATA and cloud #PBX handle long telephone calls (such as intercept feed from the other #PBX)
Contents of #tape are not kept long term, they are be erased once I've assessed the audio quality..
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What am I fishing for here? #telephone calls 😁
This is all above board (as its internal monitoring)- but old tech way is surprisingly most GDPR compliant - it separates call metadata (which I don't want, I can get that from other sources) from audio which I do want.
I'm not even interested in exact *content* of calls here, what I'm monitoring is overall audio quality to make sure nothing is glitched / daleked at our end now calls are 100% #VOIP (alas, I can't do anything about ropey #LTE networks our staff and service users might be using)
I'm also testing how #Grandstream #ATA and cloud #PBX handle long telephone calls (such as intercept feed from the other #PBX)
Contents of #tape are not kept long term, they are be erased once I've assessed the audio quality..
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What am I fishing for here? #telephone calls 😁
This is all above board (as its internal monitoring)- but old tech way is surprisingly most GDPR compliant - it separates call metadata (which I don't want, I can get that from other sources) from audio which I do want.
I'm not even interested in exact *content* of calls here, what I'm monitoring is overall audio quality to make sure nothing is glitched / daleked at our end now calls are 100% #VOIP (alas, I can't do anything about ropey #LTE networks our staff and service users might be using)
I'm also testing how #Grandstream #ATA and cloud #PBX handle long telephone calls (such as intercept feed from the other #PBX)
Contents of #tape are not kept long term, they are be erased once I've assessed the audio quality..
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What am I fishing for here? #telephone calls 😁
This is all above board (as its internal monitoring)- but old tech way is surprisingly most GDPR compliant - it separates call metadata (which I don't want, I can get that from other sources) from audio which I do want.
I'm not even interested in exact *content* of calls here, what I'm monitoring is overall audio quality to make sure nothing is glitched / daleked at our end now calls are 100% #VOIP (alas, I can't do anything about ropey #LTE networks our staff and service users might be using)
I'm also testing how #Grandstream #ATA and cloud #PBX handle long telephone calls (such as intercept feed from the other #PBX)
Contents of #tape are not kept long term, they are be erased once I've assessed the audio quality..
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I recently rediscovered the venerable but powerful "pudb" #Python #debugger. I think I was introduced to it at Routable.com a few years ago.
It has a design quality I associate with good tools, which is that it's immediately useful with very little RTFM, but also has significant feature depth if you want to go there.
E.g. when I use pdb/ipdb, I often do a lot of manual inspection of variables. The pudb "Variables" panel handles almost all those use cases, fast.
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I recently rediscovered the venerable but powerful "pudb" #Python #debugger. I think I was introduced to it at Routable.com a few years ago.
It has a design quality I associate with good tools, which is that it's immediately useful with very little RTFM, but also has significant feature depth if you want to go there.
E.g. when I use pdb/ipdb, I often do a lot of manual inspection of variables. The pudb "Variables" panel handles almost all those use cases, fast.
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I recently rediscovered the venerable but powerful "pudb" #Python #debugger. I think I was introduced to it at Routable.com a few years ago.
It has a design quality I associate with good tools, which is that it's immediately useful with very little RTFM, but also has significant feature depth if you want to go there.
E.g. when I use pdb/ipdb, I often do a lot of manual inspection of variables. The pudb "Variables" panel handles almost all those use cases, fast.
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I recently rediscovered the venerable but powerful "pudb" #Python #debugger. I think I was introduced to it at Routable.com a few years ago.
It has a design quality I associate with good tools, which is that it's immediately useful with very little RTFM, but also has significant feature depth if you want to go there.
E.g. when I use pdb/ipdb, I often do a lot of manual inspection of variables. The pudb "Variables" panel handles almost all those use cases, fast.
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I recently rediscovered the venerable but powerful "pudb" #Python #debugger. I think I was introduced to it at Routable.com a few years ago.
It has a design quality I associate with good tools, which is that it's immediately useful with very little RTFM, but also has significant feature depth if you want to go there.
E.g. when I use pdb/ipdb, I often do a lot of manual inspection of variables. The pudb "Variables" panel handles almost all those use cases, fast.
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Ubuntu 26.04 Ends 46 Years of Silent sudo Passwords
https://pbxscience.com/ubuntu-26-04-ends-46-years-of-silent-sudo-passwords/
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RE: https://infosec.exchange/@enablesecurity/116300709031150946
VoIP/WebRTC security has needed a DVWA equivalent for a long time. We built DVRTC: full dockerized VoIP stack, intentionally vulnerable, 7 guided exercises.
Live instance at pbx1.dvrtc.net — try it now.
https://www.enablesecurity.com/blog/introducing-dvrtc-damn-vulnerable-real-time-communications/
#infosec #webrtc #voipsecurity #penetrationtesting #training
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PH-PBX, Fokker F28-1000 Fellowship, Dutch Royal Flight, at Amsterdam Schipol (I think!), 1992 or 1993.
#avgeek #planespotting #amsterdam #schipol #ams #eham #fokker #f28 #dutchRoyalFlight -
this is just cursed behaviour - whather #Groundwire registers when something else is using same external IP depends on what order SIP registrations arrive!
In this case its not a disaster as if I am on site I have far better devices available than my mobile phone to make SIP calls with (or can just use its LTE data), but its something worth being wary about as it could bite you in the arse if you are setting this up in somewhere where you don't have access to a different IP address to that shared by a #FreePBX inter-PBX #trunk
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As an experiment, I asked #MS365 #Copilot to explain how to set up #SIP trunk on #FreePBX using #PJSIP (consider that I have already successfully set up several of these, to external providers and an inter-PBX line between two servers).
Results it returned were horribly mangled and mixed up from various providers sites, if you followed them the trunk likely won't work at all, and even if it did it would end up in completely wrong context/dialplan.
It didn't mention such things as fromuser and took a few prompts to point out potential firewall issues.
You need to know (or learn) the basics of #telephony before starting, or else it will all go tits up very quickly - #AI is still no substitute for "boots on the ground" who have put in research for what they are trying to achieve..
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Had to open 5060 inbound to get one providers trunk to signal inbound calls (either #STUN isn't working there or some #NAT issues), with predictable results..
Got older version of #fail2ban on this box to yeet all blighters trying to get in - by turning on security logging in /etc/asterisk/logfiles_custom.conf (add entry security_log => security), updating regexes in /etc/fail2ban/filter.d and pointing failt2ban jail to check /var/log/asterisk/security_log (main Asterisk log is in wrong format and I don't know enough regex to fix that)
Also registered a #Voipfone virtual PBX extension to use as an extra trunk (needs contact-user and from-user set in #PJSIP config)
The picture @alex drew a few months back sums up exactly what dealing with these #VOIP #trunks is like
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@pbx Thanks for reading :) I've not actually used #Zappa before, sorry.
I have used #Chalice in the past (https://aws.github.io/chalice), but found the function response times to be super slow compared to when deployed using #Serverless (I guess maybe due to functions not being kept warm enough, somehow) -
Surprised it took me so long to discover #SNGREP (which has been around for a while), its a game changer compared to looking at the #Asterisk console trying to pick out the #SIP traffic you want from all the other stuff.
It also intercepts packets at kernel level (before any firewall) giving you an insight as to how many #blighters are trying to exploit #VOIP phone systems (especially those where you *have* to open 5060 UDP to connect correctly to SIP trunk providers and/or other PBX or else no inbound calls arrive)
Even produces call flow diagrams which look like the 1980s era training manuals for ISDN from British Telecom I downloaded!
(I clipped off part of the screenshot with my IP addresses at the top)
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Does anyone happen to have any documentation for a British Telecom "Tester 420A" ISDN BRI tester.
Also known as the T4200 - seemingly made by Fulcrum Communications in the early 1990s
It's throwing some error codes at me, and I'd really like to know what they mean!
#isdn #BritishTelecom #BT #telecoms #telecom #osmocom #pbx #telephoneExchange #telephonSystem
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"As of May 9, 2026, Debian’s migration software now actively blocks packages from migrating into the testing archive if they fail the reproducibility check. This applies both to new packages that cannot be reproduced and to existing packages whose reproducibility has regressed. Debian 14.0 will be the first major Debian release to ship under this hard mandate."
https://pbxscience.com/debian-mandates-reproducible-packages-for-debian-14-forky/ -
Oh boy, rent on my workshop just went up 50% - I think this means the end of my hobby as a #woodworker. I've never made stuff to sell so it's always been a cost I've just accepted, but this makes it hard. -
One of the major upsides of being with #aaisp is when an engineer steals your pair you can get things fixed without waiting 10 days...
Today 12:34:48 Sent KCI email 12:34:45 DSL line up (down 3 hours) KCI Today 11:16:13 Today 11:51:29 BT Fault Notification Only: Engineer Issued. Today 11:15:01 Today 11:16:13 BT Fault Notification Only: Today 10:19:59 Today 10:23:43 BT Fault Non-appointed Task Confirmed: Today 10:17:25 Today 10:19:59 BT Fault Implementing Solution BT Today 10:17:16 Today 10:17:25 BT Fault Trouble Report Accepted BT Today 10:16:58 Today 10:17:16 BT Fault Today 08:50:36 Sent KCI email 2024-03-21 08:50:04 Line down (LostCarrier)``` -
One of the major upsides of being with #aaisp is when an engineer steals your pair you can get things fixed without waiting 10 days...
Today 12:34:48 Sent KCI email 12:34:45 DSL line up (down 3 hours) KCI Today 11:16:13 Today 11:51:29 BT Fault Notification Only: Engineer Issued. Today 11:15:01 Today 11:16:13 BT Fault Notification Only: Today 10:19:59 Today 10:23:43 BT Fault Non-appointed Task Confirmed: Today 10:17:25 Today 10:19:59 BT Fault Implementing Solution BT Today 10:17:16 Today 10:17:25 BT Fault Trouble Report Accepted BT Today 10:16:58 Today 10:17:16 BT Fault Today 08:50:36 Sent KCI email 2024-03-21 08:50:04 Line down (LostCarrier)``` -
One of the major upsides of being with #aaisp is when an engineer steals your pair you can get things fixed without waiting 10 days...
Today 12:34:48 Sent KCI email 12:34:45 DSL line up (down 3 hours) KCI Today 11:16:13 Today 11:51:29 BT Fault Notification Only: Engineer Issued. Today 11:15:01 Today 11:16:13 BT Fault Notification Only: Today 10:19:59 Today 10:23:43 BT Fault Non-appointed Task Confirmed: Today 10:17:25 Today 10:19:59 BT Fault Implementing Solution BT Today 10:17:16 Today 10:17:25 BT Fault Trouble Report Accepted BT Today 10:16:58 Today 10:17:16 BT Fault Today 08:50:36 Sent KCI email 2024-03-21 08:50:04 Line down (LostCarrier)``` -
One of the major upsides of being with #aaisp is when an engineer steals your pair you can get things fixed without waiting 10 days...
Today 12:34:48 Sent KCI email 12:34:45 DSL line up (down 3 hours) KCI Today 11:16:13 Today 11:51:29 BT Fault Notification Only: Engineer Issued. Today 11:15:01 Today 11:16:13 BT Fault Notification Only: Today 10:19:59 Today 10:23:43 BT Fault Non-appointed Task Confirmed: Today 10:17:25 Today 10:19:59 BT Fault Implementing Solution BT Today 10:17:16 Today 10:17:25 BT Fault Trouble Report Accepted BT Today 10:16:58 Today 10:17:16 BT Fault Today 08:50:36 Sent KCI email 2024-03-21 08:50:04 Line down (LostCarrier)```