A firewall is not going to help. On many SIP telephones this can be an issue. 
On Yealink they have a setting labeled “Accept SIP trusted Server only” which 
will cause those ‘ghost calls’ to stop. I am not sure why they do not have it 
enabled. Seems this should be default on all SIP telephones these days.

 

I have not seen such a setting on LinPhone, but I would of thought such 
security would be in the code.

 

 

 

From: Linphone-users <[email protected]> On 
Behalf Of Dovid Bender
Sent: Thursday, June 10, 2021 6:48 PM
To: [email protected]
Subject: Re: [Linphone-users] Random Incoming calls

 

Without knowing your set up if I had to guess the calls you are getting are 
most likely from attackers out there that are looking for vulnerable phone 
systems to compromise. They will send calls to random IP's and if they find a 
vulnerable system they make calls on the phone systems owner's expense. Some 
phones have an option to disable such calls but I don't see one on Linphone (at 
least not in the version I have here). A simple firewall should be able to 
block such calls.

 

On Thu, Jun 10, 2021 at 5:36 PM Ray Martel <[email protected] 
<mailto:[email protected]> > 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

 <mailto:[email protected]> [email protected]  

 <https://wcbs880.radio.com/> WCBS 880



 

 

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