<div dir="ltr">On a related note, my parents complained about dropped SIP calls on a Linksys ATA.<div>Replacing the 3 yr old Aztech DSL modem, and the verizon actiontec router, with a new d-link modem/router has resulted in no dropped calls. So.. buggy modem/routers affecting calls might be more common than you think.<div>
<br clear="all"><div dir="ltr"><span style="font-family:Verdana,Arial,Helvetica,sans-serif"><span style="font-size:small">-Avi Marcus</span><br></span></div>
<br><br><div class="gmail_quote">On Thu, Nov 24, 2011 at 5:34 PM, Charlie Orford <span dir="ltr"><<a href="mailto:charlie.orford@attackplan.net">charlie.orford@attackplan.net</a>></span> wrote:<br><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex;">
Hi Chris<br>
<br>
I don't know why but replacing the router (a 5 year old Draytek Vigor<br>
2600) with a linux machine + pppoe modem fixed the problem.<br>
<br>
No change was needed with the phones and they are still behind NAT (but<br>
this time its managed by iptables).<br>
<br>
Buggy router I guess....<br>
<br>
<br>
On 24/11/2011 15:27, Charlie Orford wrote:<br>
> Hmm it doesn't look like it is a fragmentation problem. Same "400 Bad<br>
> Request" response even with the INVITE at 995 bytes:<br>
><br>
> <a href="http://pastebin.freeswitch.org/17868" target="_blank">http://pastebin.freeswitch.org/17868</a><br>
> <a href="http://pastebin.freeswitch.org/17867" target="_blank">http://pastebin.freeswitch.org/17867</a><br>
><br>
> FYI, issuing "ping -f -l 1470 <a href="http://my.fs.server.com" target="_blank">my.fs.server.com</a>" from a windows<br>
> workstation on the same network as the phone goes through ok (so I think<br>
> this means as long as the INVITE packet is 1470 bytes or less, it should<br>
> not get fragmented).<br>
><br>
> Is there anything else I can debug to track this down?<br>
><br>
> Charlie<br>
><br>
><br>
> On 24/11/2011 14:59, <a href="mailto:chrisbware@interfree.it">chrisbware@interfree.it</a> wrote:<br>
>> Your INVITE is 1672 bytes. Some router split packet over 1500 bytes. To test if this is the problema, disable all codecs leaving only "basic codecs" as Aastra call them (g711a,g711u,g729) and disable ice. Packet should be smaller: if the problem is fixed in this way, packet fragmentation is the cause.<br>
>><br>
>><br>
>> -----Messaggio originale-----<br>
>> Da: Charlie Orford<<a href="mailto:charlie.orford@attackplan.net">charlie.orford@attackplan.net</a>><br>
>> Inviato il: 24 Nov 2011 - 13:47<br>
>> A: FreeSWITCH Users Help<<a href="mailto:freeswitch-users@lists.freeswitch.org">freeswitch-users@lists.freeswitch.org</a>><br>
>><br>
>><br>
>> Hi Chris,<br>
>><br>
>> I've increased the debugging and taken a new trace:<br>
>><br>
>> <a href="http://pastebin.freeswitch.org/17864" target="_blank">http://pastebin.freeswitch.org/17864</a><br>
>><br>
>> And here is the output of tport_sip.log:<br>
>><br>
>> <a href="http://pastebin.freeswitch.org/17865" target="_blank">http://pastebin.freeswitch.org/17865</a><br>
>><br>
>> A person on the #freeswitch IRC channel suggested the problem might be<br>
>> due to packet fragmentation?<br>
>><br>
>> Charlie<br>
>><br>
>><br>
>> On 24/11/2011 14:29, <a href="mailto:chrisbware@interfree.it">chrisbware@interfree.it</a> wrote:<br>
>>> I suspect problem is on SDP but we can't see it on pastebin.<br>
>>> -----Messaggio originale-----<br>
>>> Da: Charlie Orford<br>
>>> Inviato il: 24 Nov 2011 - 10:17<br>
>>> A: FreeSWITCH Users Help<br>
>>><br>
>>><br>
>>> Hi list<br>
>>><br>
>>> I have done some googling but cannot find much info about what causes FS<br>
>>> to send a SIP/2.0 400 Bad Request response.<br>
>>><br>
>>> My phones are able to register but when I try a test call (e.g. to 9196)<br>
>>> FS responds to the INVITE with Bad Request. For a short transcript of<br>
>>> this in action see: <a href="http://pastebin.freeswitch.org/17863" target="_blank">http://pastebin.freeswitch.org/17863</a><br>
>>><br>
>>> My setup:<br>
>>> I have a clean git head install (cloned yesterday) and am running the<br>
>>> unmodified "out of the box" configuration (except I have enabled<br>
>>> NDLB-force-rport on the internal profile and set a default poassword).<br>
>>> FS is on a public server (no nat) and phones (aastra 57i models) are all<br>
>>> natted behind an ADSL router.<br>
>>><br>
>>> Thanks& Regards,<br>
>>> Charlie<br>
>>><br>
>>><br>
>>><br>
>>><br>
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</blockquote></div><br></div></div></div>