October 2025 - osmocom-analog - lists.osmocom.org

Help with cable connection from the phone to the SDR.
by George 28 Apr '26

28 Apr '26

Hello, I have been wanting to build a TACS base station with Osmocom analog for a while now, and have decided finally to do it! To avoid regulations, I would like to do it over a cabled connection from the phone to the SDR. I have read that some form of load or attenuators are needed to stop the phone and SDR frying themselves. Unfortunately I have little knowledge on this subject, so I wondered if anyone here can tell be what sort of load I need. Any help would be greatly appreciated

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osmocom-analog to osmo-cc-sip-endpoint local server help
by admin＠ready100.com 20 Apr '26

20 Apr '26

osmocom-analog is working. osmo-cc-sip-endpoint is installed and working (i think) however, i'm not sure what my sip-endpoint command line should be... Everything is running on the same machine, I just want to connect my AMPS device to my local asterisk server. I have setup a user for the pbx using the phone number baked into the phone. I have a non standard port (ie not default) for my asterisk server. When I try to use command lines I've seen on the lists I just get: sip.c:1783 error : Failed to create SIP stack object I assume it's just because I have incomplete parameters. Can anyone help? I'm so close!

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SIP connector for osmocom-analog?
by Famicoman 15 Apr '26

15 Apr '26

Hello all! I have been enjoying osmocom-analog with my AMPS phones for the last few days and was wondering if there has been any work done for SIP connectivity with analog phones? I see there is 'osmo-sip-connector' software from my searches but as far as I can tell, there is no similar software of osmocom-analog. Thanks, Mike

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No Device for Transceiver
by carsten.gallini＠gmail.com 08 Apr '26

08 Apr '26

https://pasteboard.co/dkAOhAMS7qOh.png https://pasteboard.co/V7C90XoOSC5n.png UHD is able to find the device and set the name so I do have control over the device, I'm not sure what the deal is.

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Re: SIP connector for osmocom-analog?
by jordan＠k9fax.us 08 Apr '26

08 Apr '26

On 2023-02-23 03:34, Famicoman wrote: > Hi all, thanks for all your help so far! > > I believe I have successfully built sofia-sip and > osmo-cc-sip-endpoint. I did have an issue building > osmo-cc-sip-endpoint as it was complaining about using > AC_CONFIG_MACRO_DIR more than once in configure.ac [1] when running > autoreconf. I saw that it was defining both AC_CONFIG_MACRO_DIR and > AC_CONFIG_MACRO_DIRS so I commented out the latter and everything > seems to have proceeded fine afterwards (though with warnings). I'm > leaving this note here in case someone else faces this. I'm running > Ubuntu 22.04.2 with everything up to date so I'm guessing the build > dependencies have become more strict towards this. > > I am running amps with: > $ amps --limesdr-mini --channel 334 - channel 332 -o --fast-math > > I am running osmo-cc-sip-endpoint with: > $ osmo-cc-sip-endpoint --local 192.168.3.225 --remote 192.168.5.228 -R > 8927188(a)192.168.5.228 -A 8927188 secretpasswordhere 192.168.5.228 -v 0 > * > > osmo-cc-sip-endpoint connects to my asterisk server at 192.168.5.228 > just fine and it also reports it is connecting to my local ip via the > socket amps sets up. The issue I'm facing at the moment is that I'm > not getting audio from asterisk coming out of the earpiece on the amps > phone. I do hear a bit of white noise and an occasional click > (interference I'm guessing) and I know the phone is otherwise good > because I used it to call another phone through amps. Based on the > asterisk logs, everything looks as it would for any other hardline I > have connected but I'm not hearing anything. > > I'll do some more checks later to make sure asterisk is behaving > properly and I'll try to call my amps phone from a hardline and see if > there's some sort of one-way audio issue. > > Does anyone know if osmo-cc-sip-endpoint needs a specific audio codec? > I'm only allowing ulaw right now, though I also tried with both ulaw > and alaw enabled and noticed no difference. > > To answer Jordan's question about how I compiled the > osmocom-analog-binaries, these are the steps I used: > $ autoreconf -if > $ ./configure > $ make -j4 > $ sudo make install > > I think I'm really close, just not 100% there yet. > > Cheers, > Mike > > On Wed, Feb 22, 2023 at 3:42 AM <jordan(a)k9fax.us> wrote: > >> On 2023-02-20 21:42, Famicoman wrote: >>> Hello all! I have been enjoying osmocom-analog with my AMPS phones >> for >>> the last few days and was wondering if there has been any work >> done >>> for SIP connectivity with analog phones? I see there is >>> 'osmo-sip-connector' software from my searches but as far as I can >>> tell, there is no similar software of osmocom-analog. >>> >>> Thanks, >>> Mike >>> -- >>> osmocom-analog mailing list -- osmocom-analog(a)lists.osmocom.org >>> To unsubscribe send an email to >> osmocom-analog-leave(a)lists.osmocom.org >> >> That connector does indeed work with Osmocom-analog, it can be a bit >> >> tricky with the lack of documentation however, I have navigated it >> before and would be happy to lend a hand. Can you tell me about how >> you >> compiled your osmocom-analog binaries (what options and such used)? > > > Links: > ------ > [1] http://configure.ac Glad to hear you are getting there! What codec is your asterisk server set to use? You may need to play with the allowed codecs on that end. I remember running into that issue before as well however I do not remember how I went about resolving it. I will be able to play around with my setup again later this weekend and I can let you know how I had mine configured. You may want to ensure under your Asterisk SIP Settings tab that you have ulaw, alaw, and gsm codecs enabled/allowed to start with. You may also be able to specify the codec in the sip connector parameters. The last thing I can think to mention is to ensure your SIP traffic is flowing freely to both ends, SIP through firewalls can be a huge pain in the rear end.

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Re: Fwd: osmocom-analog Website down?
by Andreas Eversberg 13 Mar '26

13 Mar '26

Please try again. I just fixed some entries in the DNS. It should work with IPv6/IPv4 now. On 6/21/24 06:56, Harald Welte wrote: > > > -------- Original Message -------- > From: Tyler Bufkin <wz5tx(a)outlook.com> > Sent: 21 June 2024 04:04:46 CEST > To: "osmocom-analog-owner(a)lists.osmocom.org" <osmocom-analog-owner(a)lists.osmocom.org> > Subject: Website down? > > Hello, > I was just trying to pull up your website and I can't seem to get it to load. > I am wanting to get my analog cellular project up and going. > Thanks! > > WZ5TX > David “Tyler” Bufkin > 817-846-4693 >

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Future Directions in Nursing Education and Paper Writing Services
by taylorswiftmerch146＠gmail.com 03 Mar '26

03 Mar '26

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SDR reccomendation
by nishackle＠gmail.com 24 Dec '25

24 Dec '25

Hi All, I hate reaching out like this, but I'm at the limit of my knowledge. I've got some AMPS handsets i'd like to make use of-back to my PBX if possible. The problem is, i've not been able to get AMPS to work with any of the SDR's I have. I have a HackRF, A URAN1 and a Pluto. I can open the URAN as a USRP device with the following: amps --sdr-soapy \ --sdr-device-args "driver=uhd" \ --sdr-channel 0 \ --sdr-samplerate 1000000 \ --sdr-bandwidth 250000 \ --sdr-rx-gain 20 \ --sdr-tx-gain 30.0 \ -k 334 -T CC/PC/VC \ -k 336 -T VC \ -p -s 192000 -o --fast-math Which appears to work, but the radio doesn't ever actually transmit, the SDR works, because I use it with OpenBTS to make a GSM station. I spent a $400 on a secondhand limeSDR mini, but that turned up broken in the post. Is there an easily obtainable SDR that anyone else has got working? Thanks, Nick

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