asterisk users - Nov 2011 - trouble with sip connection and registration

I have a home asterisk box which connects to the office asterisk, so I 
can just dial extensions.

This used to work just fine. I'm using 10.0-rc1 on the home box, 1.8.7.0 
on the office. But it doesn't work now:

[Nov 14 18:38:19] NOTICE[21563]: chan_sip.c:13161 sip_reg_timeout:    -- 
Registration for 'sip@<officePBX>' timed out, trying again
(Attempt #86)

I first thought it was some fall out of the new upgrade to 10.0-rc1, but 
now I'm not sure.

Even with verbose at 6 I don't see anything on the office console about 
the attempted registration.

And on the office:

lsof -i:5060
COMMAND   PID     USER   FD   TYPE DEVICE SIZE/OFF NODE NAME
asterisk 2045 asterisk   15u  IPv4  23030      0t0  UDP *:sip

but:

telnet localhost 5060
Trying 127.0.0.1...
telnet: connect to address 127.0.0.1: Connection refused

iptables is set to allow 5060 udp and tcp. And I've flushed iptables, 
but still no luck.

I can ssh into the office box from the home box. The office box is 
directly connected, the home nat'ed.

Any help really appreciated.

sean

You're not going to get a telnet connection on port 5060, since that's
tcp and sip uses UDP.

Use tcpdump/wireshark on your office pbx to see if the packets are getting to
you. If not, then there's something wrong inbetween.

A firewall misconfig, perhaps. Or the unthinkable:  your home ISP has started
filtering 5060.



On Nov 14, 2011, at 18:51, sean darcy <seandarcy2 at gmail.com> wrote:
> I have a home asterisk box which connects to the office asterisk, so I can
just dial extensions.
> 
> This used to work just fine. I'm using 10.0-rc1 on the home box,
1.8.7.0 on the office. But it doesn't work now:
> 
> [Nov 14 18:38:19] NOTICE[21563]: chan_sip.c:13161 sip_reg_timeout:    --
Registration for 'sip@<officePBX>' timed out, trying again
(Attempt #86)
> 
> I first thought it was some fall out of the new upgrade to 10.0-rc1, but
now I'm not sure.
> 
> Even with verbose at 6 I don't see anything on the office console about
the attempted registration.
> 
> And on the office:
> 
> lsof -i:5060
> COMMAND   PID     USER   FD   TYPE DEVICE SIZE/OFF NODE NAME
> asterisk 2045 asterisk   15u  IPv4  23030      0t0  UDP *:sip
> 
> but:
> 
> telnet localhost 5060
> Trying 127.0.0.1...
> telnet: connect to address 127.0.0.1: Connection refused
> 
> iptables is set to allow 5060 udp and tcp. And I've flushed iptables,
but still no luck.
> 
> I can ssh into the office box from the home box. The office box is directly
connected, the home nat'ed.
> 
> Any help really appreciated.
> 
> sean
> 
> 
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On Mon, 14 Nov 2011, sean darcy wrote:
> telnet localhost 5060
> Trying 127.0.0.1...
> telnet: connect to address 127.0.0.1: Connection refused
Telnet is TCP while SIP is usually UDP.

The 'Connection refused' just means you don't have telnetd running
(a good
thing) or anything else (xinetd, honeypot, etc.) listening on that TCP 
port.
> iptables is set to allow 5060 udp and tcp...
127.0.0.1 is assigned to the 'lo' ('loopback') interface and
probably not
filtered by your iptables rules.

If you enable SIP debugging on your home and office Asterisk servers, does 
that yield any clues?

tshark and wireshark may also yield clues.

-- 
Thanks in advance,
-------------------------------------------------------------------------
Steve Edwards       sedwards at sedwards.com      Voice: +1-760-468-3867 PST
Newline                                              Fax: +1-760-731-3000