asterisk users - Dec 2004 - DSLink modem freeze

Hi Folks,

I've been having troubles with a DSL router (DSLink 200E) and SIP phones.
When I put any SIP phone (software or hardware) to work behind
that DSL router, it completely freeze.
I ready tech specs of that DSL router and it says that SIP protocol is
supported.
ie. I tested two DSLink 200E with the same results.

Does anyone has any idea?
Thanks in advance.

-- 
===========================================Rodrigo P. Telles
<telles@devel.it>
Project Manager
Devel-IT - http://www.devel.it
TDKOM Group
============================================

Its probably has a broken ALG (most of these modems have bad SIP 
implementations)  I suggest you change your SER port to a non-standard 
one so that the ALG does not try to modify the packet.  (We had to do 
that a while ago.  Almost 40% of complaints comming in to us stemmed 
from bad SIP ALGs at routers and modems.

Andres
Network Admin
http://www.telesip.net



Rodrigo P. Telles wrote:
> Hi Folks,
>
> I've been having troubles with a DSL router (DSLink 200E) and SIP
phones.
> When I put any SIP phone (software or hardware) to work behind
> that DSL router, it completely freeze.
> I ready tech specs of that DSL router and it says that SIP protocol is
> supported.
> ie. I tested two DSLink 200E with the same results.
>
> Does anyone has any idea?
> Thanks in advance.
>

Hi everybody

in new versions of Asterisk the RTP on SIP pass only througt the Asterisk,
not directly between the endpoints like olders versions.

What happened whit this feature? (reinvite)
Can you help me?

Rodrigo P. Telles wrote:
> Hi Folks,
> 
> I've been having troubles with a DSL router (DSLink 200E) and SIP
phones.
> When I put any SIP phone (software or hardware) to work behind
> that DSL router, it completely freeze.
> I ready tech specs of that DSL router and it says that SIP protocol is
> supported.
> ie. I tested two DSLink 200E with the same results.
Turn off SIP support and let the generic NAT deal with it.

--Eric