Accelerate3g5 -- unrznbl¶

Participants¶

Just one: <unrznbl@unreasonablefarm.org>.

I camp on freenode IRC #osmocom so feel free to get on there and ask a question. Might take a day or two for someone to reply but if you stay on they usually will answer.

Goals¶

• Help with documentation, testing, troubleshooting via email/irc.
• Research and develop 3G baseband on mediatek chips
• Test postmarketos/ofono on Moto E (surnia) and LG Nexus 5 (hammerhead)
• Play around with qualcomm quectel modules

Details¶

• debian linux
• EC20 module
• iPhone 4
• various other 3G+ phones to test with
• ZTE Obsidian phone - MT6735 - GSM, UMTS, GPRS, HSPA+, HSUPA, TD-SCDMA, EVDO, LTE Cat 4 (based on https://en.wikipedia.org/wiki/MediaTek)

Journal¶

• 10/30/2020
  • finally got voice working! One simple config change was all that was needed

Oct 30 12:16:18 nitb osmo-msc[1729]: <0023> mgcp_client.c:701 Failed to read: r=192.168.1.118:2427<->l=192.168.1.118:2727: 111='Connection refused'
Oct 30 12:16:20 nitb osmo-msc[1729]: <0023> mgcp_client.c:701 Failed to read: r=192.168.1.118:2427<->l=192.168.1.118:2727: 111='Connection refused'

and so just had to change osmo-mgw.cfg so that msc could talk to it

       mgcp
         bind ip 192.168.1.118

and voila! voice! :)

• resolved osmo-msc not starting due to distribution versions of osmo vty and ctrl, once updated to Latest osmo repo versions, osmo-msc starts
• next step: get 3g data working
• excited to test lots of phones, especially postmarketos: samsung klte, motorola osprey, lg hammerhead, motorola surnia

• 04/10/2020
  • wrote some CFEngine policy to setup raspberry pi as nitb
  • struggled with NTP issues for a while but finally after some good config and a nano3g reboot things are connected!
  • trying to make calls/send SMS fails right now. Will email mailing list with logs and config to get some clues
  • really need this network to support my testing of ofono on postmarketos on hammerhead (LG Nexus 5) and my fork of termux-api which supports sms/mms
  • plan on trying to find some open source MMS gateway to integrate with osmocom nitb (as mentioned previous update)
  • will try and publish the CFEngine policy and write a blog post about the experience

• 03/04/2020
  • restarting my efforts to use this setup. Working on a raspberry pi with packages to setup 3g network for
  • wireless connectivity between a kindle DX and other devices in the home
  • testing sms/mms/group/image/attachements with my hack for command line support in termux android app: https://github.com/craigcomstock/termux-api/tree/smsmms-send-receive
    • will need to find something for MMS on the backend
  • hope to have 2-3 devices working with linux/ofono/postmarketos to test with
    • hammerhead
    • surnia (MSM8916 supports mainline but needs device support)
    • Alcatel Go Flip (4044W, MSM8909), will work on after surnia mainline is done
  • haven't even worked on 2G mediatek baseband/re lately so will tackle that FIRST before getting into 3G

• 10/31/2018 - rebuilt all NITB sources, configured DHCP, NTPD, got ip.access nano3g connected to nitb laptop and able to register phones on network. sms/calls don't work yet. Phones get kicked off periodically.

• 04/19/2017 - built all required projects with a few warnings and details
• TODO - take build notes and suggest changes in docs, fix warnings in builds?
• TODO - finish setting up and run the network
• TODO - test voice, text, data
• TODO - leverage fernly mediatek bootloader and various mediatek baseband sources to create 3G baseband, osmocom-bb?
• TODO - setup EC20 modules and test

Code¶

https://github.com/unrznbl/osmocom-bb/tree/mtk-layer1 (can boot a simple firmware that only spits out a bit of data on the USB serial port on fernvale)