Hi!
After upgrading from long-term version 6.46.8 to 6.47.9 or 6.47.10 VoIP calls started to hang up after 1-2 minutes.
In DNS cache are invalid, negative records of proxy servers, type unknown, data 0.0.0.0, like:
proxy1a.elio”ļŌ
proxy1a.elio”ļt
proxy1a.elio”Ót
proxy1b.elio”Ót
the correct entries are:
proxy1a.elion.ee A 217.159.187.4
proxy1b.elion.ee A 217.159.187.132
After downgrading to version 6.46.8 all works as expected, all entries in DNS cache are OK.
Which could be a problem? Router is RB4011iGS+, VoIP device Cisco IP phone 303, Cisco is directly connected to router, no other devices.
SIP helper is disabled, Fast path is allowed, neighbor discovery is enabled.
Thanks in advance