Web Ph.one Connecting Community Cellular Networks using WebRTC and - - PowerPoint PPT Presentation

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Web Ph.one Connecting Community Cellular Networks using WebRTC and - - PowerPoint PPT Presentation

Aug 26, 2023 220 likes •482 views

Web Ph.one Connecting Community Cellular Networks using WebRTC and PWA FOSDEM 2018, Stefan Sayer Rhizomatica, TIC AC Santa Mara Alotepec, Mexico Rhizomatica supports communities who need or want to build and maintain self-governed and

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WebPh.one

Connecting Community Cellular Networks using WebRTC and PWA

FOSDEM 2018, Stefan Sayer

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Rhizomatica, TIC AC

“Rhizomatica supports communities who need or want to build and maintain self-governed and owned telecommunications infrastructure.”

Santa María Alotepec, Mexico

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SayCel

Pearl Lagoon, Nicaragua

“SayCel is a research and development company dedicated to creating communications and infrastructure solutions for developing communities.”

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Connecting CCNs to the PSTN

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Goal: Connect directly

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Requirements

  • Easy to use
  • Lightweight
  • Smartphone and desktop
  • Keep implementation accessible
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VoIP App: Go Native or Web?

Native

– Adapt existing VoIP Apps,

e.g. CSipSimple ?

– Involves testing on lots of

phone models and OS versions

– Low level tech knowledge

required

Web App

–

Runs on desktop and mobile

–

T est “only” browsers

–

Web tech for UI, WebRTC for VoIP stack

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Progressive Web App

  • Just a normal website with JS
  • “Add to home screen”

With

– Caching for quick loading – Service workers – e.g. cache control, push

notifcations

– In-Browser DB

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WebRTC

  • Excellent VoIP media stack in the browser
  • Encryption, NAT handling, PLC/Jitter, EC
  • JsSIP library for easy SIP interop
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The whole system

  • SIP – WebRTC gateway
  • User Registrations
  • Push Notifcations
  • SMS text as MESSAGE
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...in more detail

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User signup

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Push notfcations

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Development collaboration

  • T

argets complete install with one line

  • Collaborate on docker-

compose fles for server

  • Currently not complete
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Challenges and Issues

  • Pure Web App limitations

– No Phonebook API – No output selection API (earphone/speaker) – Push Notifcations

→ Possibly solved by small native wrapper around the web app?

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Challenges (II)

  • Combining Web and T

elco worlds → Agile development style is good

  • Polished User Experience is not easy

→ T ech behind a simple UI is complex → needs lots of testing

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Future developments

  • Ofine deployments for WiFi mesh networks
  • Alternative to Google Push Notifcations

(GCM/FCM), also for ofine deployments

  • Make T

exting (SMS) work

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Join the project!

  • Project Website

http://webphone.saycel.com/

  • Web App source

https://github.com/saycel/webph.one

  • Docker-compose of the server

https://github.com/saycel/Saycel.Phone

  • Mailing list

https://www.freelists.org/list/webphone-discuss