Quality of SIP calls behind openvpn
Posted: Mon Jul 02, 2018 7:00 am
Hi,
Im using Asterisk pbx hidden behind openvpn server. Endpoints are installed on Android Phones. This configuration is working quite good, but voice quality gets very bad when phone user is driving a car (so we have lot of handovers). Im using 8k codec (speex),
Could some1 give me any clues how could i improve my configuration to get better voice quality?
I already set up:
sndbuf 0
rcvbuf 0
My full config:
local <ipaddress>
port 1194
proto udp
dev tun
ca ca.crt
cert server.crt
dh dh2048.pem
server 10.8.0.0 255.255.255.0
ifconfig-pool-persist ipp.txt
push "route 10.1.0.0 255.255.255.0"
push "redirect-gateway def1 bypass-dhcp"
duplicate-cn
keepalive 10 120
user nobody
group nogroup
persist-key
persist-tun
status openvpn-status.log
verb 3
mssfix 1150
tun-mtu 1200
sndbuf 0
rcvbuf 0
fast-io
Best regards, Konrad
Im using Asterisk pbx hidden behind openvpn server. Endpoints are installed on Android Phones. This configuration is working quite good, but voice quality gets very bad when phone user is driving a car (so we have lot of handovers). Im using 8k codec (speex),
Could some1 give me any clues how could i improve my configuration to get better voice quality?
I already set up:
sndbuf 0
rcvbuf 0
My full config:
local <ipaddress>
port 1194
proto udp
dev tun
ca ca.crt
cert server.crt
dh dh2048.pem
server 10.8.0.0 255.255.255.0
ifconfig-pool-persist ipp.txt
push "route 10.1.0.0 255.255.255.0"
push "redirect-gateway def1 bypass-dhcp"
duplicate-cn
keepalive 10 120
user nobody
group nogroup
persist-key
persist-tun
status openvpn-status.log
verb 3
mssfix 1150
tun-mtu 1200
sndbuf 0
rcvbuf 0
fast-io
Best regards, Konrad