Re: [Linphone-users] Random Incoming calls

[Chris Woods]

Hi Ray,

SIP spam sucks eh :(

My broadcasting workplace has a fleet of Access Racks which were regularly
hammered, and due to the partial N/ACIP support (but no real tolerance for
invalid signaling or drive-by attacks they would get from SIP spammers)
they would frequently lock up, or mistakenly get stuck awaiting a valid
handshake to complete and effectively become stuck engaged.

Not much you can do directly with the Comrexes except change listening
ports (which itself brings the obvious challenges for interoperability),
obfuscate them behind firewalls with whitelists, change their public IPs,
perhaps restrict access to specific source IPs if feasible -- or even have
them only accessible indirectly via SIP server or SBC and use that to help
filter out the junk and noise hitting them. Happy to discuss off-list if
you want.

Worth checking you're on the latest v4 firmware as the stability did
improve a bit over the 2.7. If you're not aware, be sure to install new CF
cards, as the old ones in our Racks were, and still are, notorious for
spontaneously dying when power cycled after very long uptimes (and firmware
updates).

Cheers
Chris


On Thu, 10 Jun 2021, 22:37 Ray Martel,  wrote:

> I am using Linphone as a way to connect to a comrex ACCESS for radio
> reports.
>
> Recently I keep getting incoming calls that just don’t stop. This has
> happened with some but not all of us using this.
>
> Any idea of how to change settings to stop this?
>
> The second thing is that occasionally I can’t get an ip address on some
> installs. Instead I get a weird number after my name instead of an IP.
>
>
>
> Would really love to email with someone because this works great for me
> and I would like to fix these small but very annoying problem.
>
>
>
>
>
>
>
> *Ray Martel*
>
> Executive Producer WCBS Mets Radio Network,
>
> WCBS Newsroom Operations Manager
>
>
>
> *Audacy | New York*
>
> 345 Hudson St, 10th Fl
>
> New York, NY 10014
>
> O: +212-524-2904
>
> M: +917-414-0219
>
> ray.mar...@audacy.com
>
> WCBS 880 
>
> [image: WCBS880_MetsRadio_pos_rgb]
>
>
>
>
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Re: [Linphone-users] Voice Broadcast

[Chris Woods]

On Sun, 4 Apr 2021, 03:07 mike sullivan,  wrote:

> We would like to use our SIP based IP/PBX to voice dial out to our 500+
> members monthly and play an audio recording reminding them to attend our
> meeting. Is Linphone capable of doing something like that as-is? I have a
> list of phone numbers and an audio recording I'd like to feed to the app
> and have it one-by-one (or have multiple instances of the app) call and
> play this file.
>
> Thanks
>

Interesting idea. You're after a push notification style arrangement
whereas extensions more traditionally would dial a conference where you
could play in the audio.

You could probably get the PBX to do the ring round but to the best of my
knowledge Linphone has none of that functionality.

If you can't get your PBX to ring every extension and play your recording
(e.g. https://www.voip-info.org/asterisk-auto-dial-out/ ), you could feed a
WAV into StarTrinity SIP tester and have it bulk call with a CallXML
template. There's a free trial of StarTrinity.

Or perhaps leave the audio as a voicemail on every extension and flag the
MWI?

Or have the PBX play the announcement one time as a preroll before an
outbound call is established?

Interested to hear what solution you settle on...

>
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Re: [Linphone-users] Linphone rejects valid certificate

[Chris Woods]

On Sun, 8 Nov 2020, 23:38 Robert Dyck,  wrote:

> Version Core 4.4.0-13-gc99cb9c88 Appimage
>
>  The server/proxy is opensips. The certificate that is installed in
> opensips
> works for other user agents. Linphone rejects the certificate. The
> certificate
> was generated by Lets Encrypt.
>
> 2020-11-08 15:23:44:071 [AppRun.wrapped/belle-sip] MESSAGE Channel
> [0x4c70290]: SSL handshake in progress...
> 2020-11-08 15:23:44:091 [AppRun.wrapped/belle-sip] MESSAGE Found
> certificate
> depth=[0], flags=[not-trusted ]:
> cert. version : 3
> serial number : 03:3D:58:6A:10:1B:E4:D8:68:7C:2F:14:41:57:D4:C9:D0:8B
> issuer name   : C=US, O=Let's Encrypt, CN=Let's Encrypt Authority X3
> subject name  : CN=bogus.com
> issued  on: 2020-09-25 15:29:57
> expires on: 2020-12-24 15:29:57
> signed using  : RSA with SHA-256
> RSA key size  : 2048 bits
> basic constraints : CA=false
> subject alt name  : bogus.com
> key usage : Digital Signature, Key Encipherment
> ext key usage : TLS Web Server Authentication, TLS Web Client
> Authentication
>
> 2020-11-08 15:23:44:091 [AppRun.wrapped/belle-sip] ERROR Channel
> [0x4c70290]:
> SSL handshake failed : X509 - Certificate verification failed, e.g. CRL,
> CA or
> signature check failed
>

That sounds symptomatic of Linphone either using its own CA bundle, which
may be out of date and doesn't include the Let's Encrypt Root CA certs, or
the app is not able to query the system CA root bundle to validate your end
entity cert.

>
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Re: [Linphone-users] Call drops after 32 seconds

[Chris Woods]

No diagnostic info or description of your testing?

Regards
Chris


On Tue, 18 Jun 2019, 08:46 Thomaier, Simon,  wrote:

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