[OpenSIPS-Users] Some phones can call, others not...

[Vlad Paiu]

Hello,

If the UDP packet is fragmented and due to whatever reasons the UA 
doesn't receive it properly, there are a couple of things that you can 
do to reduce the SIP message size :

1 - enable topology hiding in OpenSIPS ( see 
http://www.opensips.org/html/docs/modules/1.11.x/dialog.html#id296413 )
2 - manually remove optional headers from the OpenSIPS script ( 
http://www.opensips.org/html/docs/modules/1.11.x/sipmsgops#id293936 )
3 - remove some of the codecs from the SDP ( 
http://www.opensips.org/html/docs/modules/1.11.x/sipmsgops#id294821 )

Also, another alternative would be to switch to TCP in order to avoid 
these fragmentation issues.

Best Regards,

Vlad Paiu
OpenSIPS Developer
http://www.opensips-solutions.com

On 01.12.2014 16:19, Stefano Pisani wrote:
> In the first case the last UDP packet (INVITE with authentication 
> header) is fragmented.
> It's very common to lost fragmented UDP packet.
>
> s
>
> Il 28/11/2014 09.42, Michele Pinassi ha scritto:
>> Hi all,
>>
>> i'm experiencing a strange issue. Some VoIP phones, like mine (5002),
>> cannot call other phones (like 5023) but i receive calls from 5023. Same
>> config, same context.
>>
>> I did some sipgrep:
>>
>> Call from 5002 to 5023 (FAILED):http://pastebin.com/BF6YyWHr
>> Call from 5023 to 5002 (SUCCESS):http://pastebin.com/rW3AKr22
>>
>> My config:http://pastebin.com/9gP9xncd
>>
>> Thanks for all your help.
>>
>> Michele
>>
>>
>>
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>
>
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