[asterisk-users] Unstable phone connection

D'Arcy J.M. Cain darcy at Vex.Net
Thu Mar 12 13:39:26 CDT 2015

This is driving me to distraction.  I have a switch with multiple
clients who are all working fine except for one and I can't figure out
what makes them different.  I have tried every NAT setting in the ATA
(SPA112 ATA with 2 x FXS, 1 x LAN), stun server on and off, different
sip ports, different RTP ports and it still fails.  I have left the
location with it working only to have it fail later.  He always gets
registered but when a call is sent it doesn't respond so the caller
hears no ring and the phone does not ring.

Yesterday he mentioned that when the phone is working the WiFi slows
down significantly.  No idea why or if it is related.

He has a radio station streaming music.  I wondered if that might be
interfering.  That's why I tried changing the SIP port and the RTP
ports but that didn't seem to help.

It smells like a network problem to me but I am running the same ADSL
device here and other clients are working behind a NAT gateway so I am
at a loss as to what might be wrong.  Could it be the streaming?


D'Arcy J.M. Cain
System Administrator, Vex.Net
http://www.Vex.Net/ IM:darcy at Vex.Net
VoIP: sip:darcy at Vex.Net

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