Weird SIP problems all routers affected at same time

I have RB951-2n’s everywhere..

they all connect to a cable modem, and all have seperate class c internal ip’s

192.168.81.0/24
192.168.82.0/24 etc etc.

for this bug let’s talk about location A: just put 6.7 as 5.26 cauzed problems with sip as well

i started with default config..
the NAT option in the quickset page is UNCHECKED , is this for DHCP only ?

i have a WLAN public IP. 1.2.3.4 ties to ether1-gateway
i have a ppp link to server with 172.22.22.66 as local ip and 172.22.22.1 as remote.
i have addresses on 192.168.86.1/24 on LAN IP (dhcp checked) and 86.200 to 86.254) server ranges.
i ADDED 10.10.60.254 to Ether2-master-local

on server i have 10.10.90.254 and i route some stuff through this.


SIP portion.

sip device SPA112 , with IP 192.168.86.105

Line 1 enabled : external_sip_server_ip port 5060 , mapped external port 5060.
Line 2 enabled : external_sip_server_ip port 5061 , mapped external port 5061.


nat enabled on device.

registers perfectly.

i removed the dst-nat’s because i think they where causing prob’s

sip helper port 5060-5061-5062.

problem is SIP calls fail intermittently. think it has to do with connection tracking…

just called the phone,

i get
Server → mk external → phone
phone answers busy to mk and mk to server.

i removed connections in connection tracker.
worked.

i made a script to loop trough 5060’s in there and remove connections

Still having problems, is there a know problem with SIP ?

should i use Helpers or disabled them and port forward my stuff ?

only one phone 2 sip accounts behind the MK

all versions do this and all started on the 15’th… weird coincidence, i tought Inet provider playing tricks on me , but a 6th location on different provider did same thing.

only thing i can think is a weird hack somehow