Am 22.06.2020 um 22:12 schrieb Marek Greško:
Hi Marek
> Would you mind repeating the test with canreinvite=no set for all you
> phones and mobile phones?
All my peers have already canreinvite=no...
I only have canreinvite=yes on the SIP configuration on the Telekom part:
[pbxluca]
type=peer
defaultuser=111111...@t-online.de
secret= xxxxxxxxxx
dtmfmode=rfc2833
host=tel.t-online.de
context=luca_incoming
outboundproxy=tel.t-online.de
port=5060
fromuser=03511111111
fromdomain=tel.t-online.de
usereqphone=yes
canreinvite=yes
insecure=port,invite
nat=no
qualify=yes
qualifyfreq=600
disallow=all
allow=alaw
allow=ulaw
Should I change canreinvite=no there?
> What is your upload bitrate? Is it guaranteed?
Currently 12Mbps. Guaranteed should be about 10Mbps...
> I would try also to test the PMTU:
>
> Try:
>
> ping -M do -s 2000 ${ip address of the sip server}
>
> You should receive icmp asking for lowering the packet size.
root@bpi:/etc/asterisk# ping -M do -s 2000 tel.t-online.de
PING tel.t-online.de (217.0.128.133) 2000(2028) bytes of data.
ping: local error: Message too long, mtu=1492
ping: local error: Message too long, mtu=1492
ping: local error: Message too long, mtu=1492
ping: local error: Message too long, mtu=1492
ping: local error: Message too long, mtu=1492
ping: local error: Message too long, mtu=1492
^C
--- tel.t-online.de ping statistics ---
6 packets transmitted, 0 received, +6 errors, 100% packet loss, time 5103ms
Mmmm... it seems not good, isn't it?
For information, here the output of ifconfig:
dsl0: flags=4305<UP,POINTOPOINT,RUNNING,NOARP,MULTICAST> mtu 1492
inet 93.241.x.y netmask 255.255.255.255 destination 62.156.z.k
inet6 fe80::9565:3024:4deb:ebc7 prefixlen 10 scopeid 0x20<link>
ppp txqueuelen 3 (Point-to-Point Protocol)
RX packets 852397 bytes 480197087 (457.9 MiB)
RX errors 0 dropped 0 overruns 0 frame 0
TX packets 967912 bytes 170822532 (162.9 MiB)
TX errors 0 dropped 0 overruns 0 carrier 0 collisions 0
> The LTE phones could have lower MTU and thus overcome PMTU problem.
Should I reduce the MTU?!?
Maybe I didn't understood what you mean...
Thanks
Luca Bertoncello
(lucab...@lucabert.de)
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