Re: [Linphone-users] Unable to call SIP account

[Stuart D Gathman]

On Tue, 21 Mar 2023, Deepashri wrote:

> credentials sip:700@siptwilioiris.sip.twilio.com.
>
> When we try to call another SIP account, we are getting the below error
> message. 

You don't need a service to call another SIP user.  Just modern internet
service.  If they don't have a DNS name pointing directly to their 
SIP phone, use a raw IPv6.  Not much longer than a phone number.

Don't have a stable IPv6 because of travel through ancient Wifi 
neighborhoods?  Use Mobile IPv6, or a VPN (Mobile IP6 is more
efficient).  By "VPN" I don't mean the type hawked on talk shows designed
to obscure your IP as a futile attempt at anonymity (use Tor),
I mean an IPv6 VPN.

> 2023-03-21 07:57:26:638 [/qt] MESSAGE QT: "Call terminated with error
> (Remote party hanged up the call.):" CallModel(0x230493f1e90)

Since you are going through a service, you should talk to them.
But maybe someone else will spot something in the log.