Hi Nedi
This is what I have found:
1) If you are registering to a DNS name, if the address changes Asterisk does
not know about it unless you are using srvlookup=yes in sip.conf. PS I don't
use it as it does a lookup for every call and I don't like this. I instead use
dnsmgr.conf to check periodically. Nate that this only affects SIP registration
and not SIP OPTIONS (qualify). For this I actually use a Monit script but the
cause of this problem is not what you are experiencing.
2) Yes using the IP Address solves 1) but if you have a provider with multiple
IP Addresses then this is not the best approach.
3) I have found this problem only recently and I think it may be what you are
experiencing. Providers with clustered SBC's (which yours sounds like), when
they fail over for some reason, any registration attempts to the standby SBC
responds with a 403 Forbidden. This was proved by my provider with a packet
capture. By default Asterisk views a 403 Forbidden as an authentication failure
and stops trying to register. If you set register_retry_403=yes in sip.conf it
fixes this problem.
Good luck.
Regards
Michael Knill
On 10/5/18, 1:24 pm, "Lonnie Abelbeck" <li...@lonnie.abelbeck.com> wrote:
Hi Nedi,
I appreciate your detailed description and for the record I feel your
frustration.
I seem to recall Michael Knill described a similar situation in the recent
past.
My educated guess is this is a firewall statefull-inspection "stuck-state"
somewhere in the network path. AstLinux's firewall is not the issue otherwise
a reboot would solve the problem.
Long story short, as a test, I would determine a time of day where shutting
down asterisk is acceptable (say 2:00 am) and keep asterisk down for 10 minutes
or so, something like:
-- cron at 2:00 am or so --
service asterisk stop
sleep 600
service asterisk init
--
(make sure you don't have any other background scripts looking to restart
asterisk other than the cron script)
Possibly 5 minutes is all that is needed, but I would start at 10 minutes.
Most any firewall UDP state should expire in 10 minutes.
Sadly, this test may take weeks to confirm if it helps.
If you are already using cron to rewrite the sip.conf this test will be a
simple addition by delaying starting up asterisk.
Lonnie
> On May 9, 2018, at 6:58 PM, nedi <n...@gmx.ch> wrote:
>
> Hi,
>
> I have some Astlinux boxes as local pbx after Modem with standard
firewall inside modems , Astlinux have different Releases, and since years I
have this issue and can’t fix that:
> After a week or month and sometimes longer the voip number can’t be
registered and Status show me „rejected“
>
> Reboot can’t help - Aterisk Reload can’t help - I can’t reproduce that
for testing.
> If I have this problem only change the SIP Server to another Sipcall sip
server can help to fix that issues.
>
> As sample if I was registered to business1.voipgateway.org I must change
registrar to business2.voipgateway.org and I can save and reload to register
without reboot.
>
> I have tried instead of registrar name to use the ip adress but this
not fixed my problem.
> I use Sipcall DNS IP’s to in the Astlinux Network setting that don’t
help,
> I don’t use IPV6. IPV6 is disabled in the Network Settings.
> Nat and Firewall in Astlinux are enabled and.
>
> I found that I have this issue only with the provider Sipcall.ch ( if
registered on different subdomains of voipgateay.org ) and only if I use
Swisscom as Internet Provider. On others provider on the same astlinux and at
the same time I don’ t have this issues.
> On the same Astlinux box by some customer I have different provider and
sipcall on the same astlinux box and only the Sipcall have this all other
provider worked onlythe the Sipcall account get rejected.
>
> At now I use Alix Board and AstLinux Release astlinux-1.2.6.1 i586 -
Asterisk 1.8.32.3, but i had this issues with oter astlinux release to.
>
> Some of my customer changed to internet with fix ip adress and there are
this issue not so often.before with Dynamic IP Adress i had this issues oftener.
>
> The Sipcall support told me that is not the problem on the Sipcall site.
Some times the Sipcall told me Astlinux trying to register with old IP Adress
and sometimes they told me Astlinux don’t try to register for some hours or
days and they don’t getting inquiry from pbx to register)
>
> I tried to change some settings in my sip.conf and there is nothing what
helped me to resolve the issue.
>
> egisterattempts=0
> registertimeout=20
> maxexpiry=3600
> defaultexpiry=600
> qualify=2500
> srvlookup=no
> nat=yes
>
> I use a cron script if external IP changed and update the sip.conf with
the new IP for dynamic IP and again I have this problem, that not helped me
great.
>
> The PBX can work for weeks and months without problem but after some time
I get that again.
>
> I don’t know have this issue something with Astlinux firewall or with
swisscom modem or with Sipcall.
>
> I think when, for some reason the registry fail and the state of the
registry becomes REJECTED, asterisk stops trying to register. Can someone help
me figuring out why this occur and a way to prevent asterisk from stop sending
the registration requests.
>
> Does anybody have an idea about that problem ? How can we configure
Asterisk to retry after some time in case of rejection ?
>
>
> Im my sip.conf I have this:
>
>
> I use a cron script to change the IP Adress in Astlinux if external ip
adress was changed and again I have this problem that some customer get
rejected.
>
> The PBX can work for weeks and months without problem but after some time
I get that again.
>
> I don’t know have this issue something with Astlinux firewall or with
swisscom modem or with Sipcall.
>
> I think when, for some reason the registry fail and the state of the
registry becomes REJECTED, asterisk stops trying to register. Can someone help
me figuring out why this occur and a way to prevent asterisk from stop sending
the registration requests.
>
> Does anybody have an idea about that problem ? How can we configure
Asterisk to retry after some time in case of rejection ?
>
>
> Im my sip.conf I have this:
>
> [general]
> useragent=mypbxname
> port=5060
> context = from-sip-external; send unknown sip callers to this context
> alwaysauthreject=yes
> deny = 0.0.0.0/0.0.0.0
> permit = 10.0.0.0/255.255.255.0
> permit = 10.8.0.6/255.255.255.0
> allowguest=no
> disallow=all
> allow=alaw
> allow=ulaw
> language=de
> registerattempts=0
> registertimeout=20
> maxexpiry=3600
> defaultexpiry=600
> qualify=2500
> notifycid=yes
> srvlookup=no
> nat=yes
> allow subscribe = yes
> subscribecontext = hints
> trustrpid=yes
> sendrpid=yes
> ;t38pt_udptl = yes
> faxdetect=yes
>
> register => 4171511xxxx:2345678@212.117.203.35/4171511xxxx
>
> [071511xxxx]
> type=peer
> username=4171511xxxx
> secret=2345678
> host=212.117.203.35
> ;fromuser=4171511xxxx
> fromdomain=212.117.203.35
> directmedia=no
> insecure=port,invite
> disallow=all
> allow=alaw
> allow=ulaw
> context=incoming212.117.203.35
> dtmfmode=info
> trustrpid=yes
> sendrpid=pai
>
>
>
> Best regards
> Nedi
>
>
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