Phones are down

#1
Our phones our down, and the firewall log is full of hundreds of messages along the lines of

----------------------------------
Mar 3 17:25:05 192.168.firewall.address kernel: NET: 2 messages suppressed.
Mar 3 17:25:05 192.168.firewall.address kernel: check_icmp: replayed ICMP packet: 192.168.pbx.address->195.189.173.10 3:3
Mar 3 17:25:11 192.168.firewall.address kernel: NET: 3 messages suppressed.
Mar 3 17:25:11 192.168.firewall.address kernel: check_icmp: replayed ICMP packet: 192.168.pbx.address->195.189.173.10 3:3
Mar 3 17:25:18 192.168.firewall.address kernel: NET: 1 messages suppressed.
Mar 3 17:25:19 192.168.firewall.address kernel: check_icmp: replayed ICMP packet: 192.168.pbx.address->195.189.173.10 3:3
Mar 3 17:25:21 192.168.firewall.address kernel: NET: 3 messages suppressed.
Mar 3 17:25:21 192.168.firewall.address kernel: check_icmp: replayed ICMP packet: 192.168.pbx.address->195.189.173.10 3:3
Mar 3 17:25:31 192.168.firewall.address kernel: NET: 2 messages suppressed.
Mar 3 17:25:31 192.168.firewall.address kernel: check_icmp: replayed ICMP packet: 192.168.pbx.address->195.189.173.10 3:3
Mar 3 17:25:33 192.168.firewall.address kernel: check_icmp: replayed ICMP packet: 192.168.pbx.address->195.189.173.10 3:3
----------------------------------

We've never had this happen before. Any ideas what is happening?

Regards

Josh

Re: Phones are down

#2
On further investigation (which I should really have done before the last post), I see that the asterisk logs are full of messages like this:

[2011-03-03 17:42:24] NOTICE[3049] chan_sip.c: -- Registration for 'xxxxxxxx@sip.voipfone.co.uk' timed out, trying again (Attempt #127)

So it looks like an issue with registration time-out.

I already have RTPkeepalive=60 in the SIP trunk settings---what else can I do? We can't do static IP, but we do have dynamic DNS.

Regards

Josh

Re: Phones are down

#3
We are seeing this too. Asterisk is logging

"Registration for 'xxxxxxxx@195.189.173.10' timed out, trying again (Attempt #2)"
etc.

Followed ultimately by

"Forbidden - wrong password on authentication for REGISTER for 'xxxxxxxx' to '195.189.173.10'"

Even worse than this is the fact that the calls never get answered by voicemail, so without looking in the logs all the time there is nothing we can do to identify when the phones are not receiving incoming calls.

We are considering moving to another provider.

Re: Phones are down

#4
Can you please contact support at voipfone co uk from the address you used to register with and we'll have a look at your account. It will be something simple in your config.
(I'm assuming that your network is able to see the internet)
Regards,

Voipfone Customer Services

iNet Telecoms Ltd (Voipfone)
Sovereign House
227 Marsh Wall
London
E14 9SD
United Kingdom

Registered number: 05168033
Vat Registration Number 858850966

Telephone: 020 7043 5555
Fax: 020 7043 5556

Web: http://www.voipfone.co.uk
Blog: http://www.voipfoneblog.co.uk
Forum: http://www.voipfoneuserforum.co.uk
Twitter: http://www.twitter.com/voipfone

Re: Phones are down

#5
To keep other interested readers up to date:

I have contacted voipfone. They initially suggested switching from sip.voipfone.co.uk to sip.voipfone.net. However, this resulted in audio in both directions being dropped from calls on both incoming and outgoing calls.

Since then, they have asked what codecs I am using. Sadly, I now cannot use sip.voipfone.co.uk either as even though Asterisk appears to register OK, all incoming calls are picked up by voicemail. And because Asterisk thought everything was OK, there was no way of knowing that our customers could not get through.

EDIT: I should mention, however, that support@voipfone.co.uk have been very prompt in replying to my emails and are continuing to help to try and resolve the issue.

Re: Phones are down

#6
Now I'm in the situation where a config that has worked for the past four months suddenly stops working and support can do nothing about it.

On .co.uk, we can't get any incoming calls, and on .net when we get the calls neither party can hear each other after a couple of seconds.

Any suggestions for reliable alternative providers?

Re: Phones are down

#7
Turns out that sip.voipfone.net is substantially different to .co.uk. By changing the RTP port range, we are now able to get reliable audio in both directions using .net

I still don't know what the problem with .co.uk was, or whether we will start to experience similar with .net but everything is working fine now.

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