[Linphone-developers] Very Curious LinPhone Android Behavior

[Tom Bevington]

We use LinPhone Android clients (Version 5.1.4) to connect to our 
Twilio-provided SIP numbers through Asterisk 20 PBX.

We use LinPhone Android's FETCH REMOTE CONFIGURATION option for all of 
our clients.

I recently reassigned and reconfigured two numbers and their respective 
remote-configuration.xml files.

I then test each of the newly reconfigured remote configuration on my 
own linphone android phone via the FETCH REMOTE CONFIGURATION option and 
confirmed I could connect to our PBX and make and receive test calls.

So far so good.

However, the actual users using the same android linphone version 5.1.4 
with same Android OS and Pixel hardware cannot connect to the PBX with 
the same remote configuration files that worked for me.

Both users appear to have solid internet data connections as they can 
connect to me by alternative internet channels, e.g. SIGNAL and TELEGRAM 
from their laptops and phones.

Does LinPhone Android have any OS-specific or Phone-specific 
dependencies outside of what's provided by the remote configuration's 
XML File?

That I can successfully toggle between three remote configuration XML 
files, successfully connect to the PBX and make/receive calls, while my 
two users cannot even connect to the Asterisk PBX with the same XML 
files seems very peculiar.