[asterisk-users] two sip listening ports for single asterisk

[Rizwan Hisham]

Hi guys,
I told my network admin to do what was advised in this thread. It works very
well for incoming calls but outgoing calls hangup exactly after 20 secs
everytime while displaying the following message on cli:

v[Nov 19 10:26:26] WARNING[18617]: chan_sip.c:1910 retrans_pkt: Maximum
retries exceeded on transmission dcc83eb7-4bd635cd at 119.152.11.60 for seqno
102 (Critical Response)
[Nov 19 10:26:26] WARNING[18617]: chan_sip.c:1927 retrans_pkt: Hanging up
call dcc83eb7-4bd635cd at 119.152.11.60 - no reply to our critical packet.
  == Spawn extension (macro-rating, s, 104) exited non-zero on
'SIP/saad-a8b83300' in macro 'rating'
  == Spawn extension (macro-rating, s, 104) exited non-zero on
'SIP/saad-a8b83300'

Also, this happens only with certain network conditions. in my office the
outgoing call hangsup everytime but when i dial from home, both incoming and
outgoing calls are fine. So i guess the problem is with user network
configuration. asterisk for other users who are using different port to
register is listening without any problems.


here is my network scenario(from where i make call):
we have a zyxel dsl modem connected to our ISP line
then we have a D-Link switch connected to the dsl modem
then we have sipura 2100 connected to that switch
IP addresses are in the range of 192.168.0.0
NAT type on router = SUA ONLY

On Thu, Nov 20, 2008 at 5:16 PM, Matthew J. Roth <mroth at imminc.com> wrote:

> Mike wrote:
> > I tried using this iptables sample, and did not see duplicate packets
> > on '--to-ports' port
> >
> > Has some verified this is working for them?
> >
> > I listened on both ports with tcpdump command.
>
> Mike,
>
> I can confirm that it's working.  Admittedly, I never looked at the
> packets with tcpdump because this *just worked* for me.  Calls that were
> sent to both ports (5060 and 5062) made it to Asterisk which was only
> listening on port 5060.  What's your experience with actual calls?
>
> As the original poster, I understand if you want third-party
> verification.  I *thought* this was a slamdunk but I'm not an iptables
> guru so I'd like it, too.
>
> What does the output of "iptables-save" and "lsmod" look like?  Here's
> mine, trimmed for relevancy:
>
> [root at asterisk ~]# iptables-save
> # Generated by iptables-save v1.3.5 on Thu Nov 20 12:03:21 2008
> *nat
> :PREROUTING ACCEPT [5579:1727747]
> :POSTROUTING ACCEPT [1943:176116]
> :OUTPUT ACCEPT [1943:176116]
> -A PREROUTING -i eth2 -p udp -m udp --dport 5062 -j REDIRECT --to-ports
> 5060
> COMMIT
> # Completed on Thu Nov 20 12:03:21 2008
>
> [root at asterisk ~]# lsmod
> Module                      Size  Used by
> ip_conntrack_netbios_ns    36033  0
> ipt_REDIRECT               35009  1
> xt_tcpudp                  36417  1
> iptable_nat                40773  1
> ip_nat                     53101  2 ipt_REDIRECT,iptable_nat
> ip_conntrack               91237  3
> ip_conntrack_netbios_ns,iptable_nat,ip_nat
> nfnetlink                  40457  2 ip_nat,ip_conntrack
> ip_tables                  55329  1 iptable_nat
> x_tables                   50377  4
> ipt_REDIRECT,xt_tcpudp,iptable_nat,ip_tables
>
> Regards,
>
> Matthew Roth
> InterMedia Marketing Solutions
> Software Engineer and Systems Developer
>
>
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-- 
Best Regards
Rizwan Hisham
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